4l60e tcc valve bore

Figure 4 Sonnax Regulator Valve and Limiter Spring in OE Bore Figure 5 A quick fix for this is to lock the PWM valve into full pressure position (via inserting a spring in the bore), and getting on/off TCC engagement as in the pre-electronic 4L60E (the 700R4s used an on/off strategy until 93 when they became the 4L60E). I've just studied the 4L60E transmission a lot, and I didn't trust the shop to rebuild it again so I did it myself and built it the way I wanted. You need to remove the valve body remove the TCC regulator valve assembly and ream this bore with a reamer from Sonnax, buy a replacement valve assembly. Common failures modes and trouble codes. com. A semi-common issue with the 4L60E is the TCC (Torque Converter Clutch) valve bore gets worn because the TCC valve is PWM (Pulse Width Modulated). Ross-Lock™ pro tree or standard brake . Scribd es red social de lectura y publicación más importante del mundo. Click here today and save money!2008-10-11 · 10-09-08 10:07 AM - Post# 1538355 In response to NoEcm I replied to you earlier over on FSC, so I'll just keep it short and say that a P1870 doesn't mean it's the TCC valve; P1870 just means the pcm thinks it detected the transmission slipping. 6. It can be traced to valve body bore wear in the lockup circuit, or the lockup valve in the pump housing. All components seen here are the typical high wear and failure prone parts you must replace for a long lasting transmission. 48re toledo overhaul kit . Includes TCC relay valve with bushing, Solenoid regulator valve, TCC Control valve bushing and Boost valve assembly. Installing dual springs for the slider is simple and cheap. Sonnax has developed a hardened steel TCC apply valve 77805-K for the 700-R4 and 4L60-E non-PWM units and an anodized aluminum valve 77805E-K for the 4L60-E PWM units, that will eliminate the bore cross leakage. For 3 1/2 stroke or less . GM 4L60E Automatic Transmission Rebuild Kits, hard parts, rebuilt transmissions. Any significant wear results in line pressure leakage to exhaust, regardless of valve type. If that '04 'Burb transmission has 80K or more, you are likely to have the exact same issue either right away, or shortly after install. 1-2 accumulator piston cracked or stuck cocked in the bore. com FREE DELIVERY possible on eligible purchasesFind helpful customer reviews and review ratings for 4L60E TCC VALVE UPGRADE REPLACEMENT FIXES P1870 CODE 7 FITS '96-'99 MADE IN USA BY TECKPAK at Amazon. Gm 4L60E transmission technical information. *Stator support machine polished for maximum sealing to prevent premature clutch failure. This wear occurs in the bore that contains the TCC isolator and regulator valves, and results 4L60E with broken pump. Valve To Fix Worn Valve Body With P1870 Code In 4L60E & 4L65E Series Automatic Transmissions 2000-2003* GENERAL MOTORS 4L60E/4L65E/4L70E Boost Valve/Sleeve - Not only are there two lengths of sleeves (93-05 1. com TIME TESTED • INDUSTRY TRUSTED . 06 The line pressure solenoid is also pwm - PCM pulses it to full pressure every so often to prevent the shuttle-type valve from sticking in it's bore - over a period of time, as mileage accrues, this can be felt at steady speeds as a slight 'bump' - this does not apply to the TCC solenoid • A 2-3 shift valve (368) or 2-3 shuttle valve (369) that is stuck, restricted and/or hung-up in its bore. pump and its sealing ring out of the front cavity bore with no 4L60E TRANSMISSION VALVE BODY SHIFT bore New listing Superior K4L60-E-V Shift Correction Kit Boost Valve 4L60E 4L60E SONNAX TCC REGULATOR VALVE KIT 96-UP * Surging at high speed may be caused by leaking torque converter regulator valve train bore plug seal. This is a primary cause for TCC-related slip code P1870 and overheated converters. 020 Oversize. Tool Sonnax 77754-tl Afl Valve Reamer And Jig Tool Kit 4l60e 4l80e Actuator Feed. 4L60E KITS, TOOLS and PARTS Industrial quality Sonnax reamer for enlarging TCC regulator valve bore in 4L60E The worn TCC ISO valve bore is a problem on most VB's that have more than 80K miles on them. Now I realize that just about any component in the transmission slipping could trip the code, but it seems to be 04-09-10 Page 8 SC-4L60E-IN ©2010 Sonnax Industries. If the bore is excessively worn and you want to prevent line pressure leaks, the bore must be GM 4L60E Automatic Transmission Rebuild Kits, hard parts, rebuilt transmissions. Member Price 4L60E TCC Regulator Valve As mentioned in problem #1 a stuck TCC apply valve is a physical problem but causes a hydraulic problem because the fluid pressure will not properly bleed off because the valve is stuck in the wrong position instead of being able to move freely in the bore of the valve body. ask. MCS05 METAL CLAD SEALS NI Governor & TCC Screen 4L60 The problem is the TCC regulator valve has worn the bore in the valve body, you will in time get the code 1870. Billet steel high gear hub. This Is A Brand New Fitzall A74741QA Made In U. The lock up valve and sleeve was used in early valve bodies 81 thru 86. This reduces the apply oil pressure and causes the converter clutch to slip and chatter. Sonnax 77754-03K 4L60E TCC REGULATOR VALVE KIT. The sonnax tcc regulator valve kits allow you to restore hydraulic integrity without replacing the bore. Remove the pump housing bolts and carefully pry the pump out of the front of the case. Generally, if you unplug the TCC solenoid at the transmission and the symptoms go away, you have found the problem. 4L60E 4L65E Transmission TCC Regulator & Isolator Valve Kit Sonnax 77754-03K Fits '97-earlier Non-EC3 units only GM 4L60-E, 4L65-E and 4L70-E unit, severe wear of the TCC regulator valve bore is caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. , VALVE KIT, 4L60E TCC REG (1997 AND UP) Click for Sonnax Information Sheet $41. 4L60E Transmission TCC PWM Valve Repair 2001-ON. Anodized aluminum valve has an annular groove for better valve centering within the sleeve. This clutch damage may generate debris causing the 2-3 shift valve line-up to stick in the valve body bore and set DTC P0757. This is what needs to be done and will cure 95% of P-1870 issues. the regulator is in a similar mannor as a th400 and can be accessed from the bottom through the oil pan. Code P1870 again, new valve body already C/K Car Forums 4L60E, 4x4, 3. No reverse/slips in reverse could be caused by: • Porosity in the piston. TCC application. This has been passed around for a while but I thought I'd post it up. GM actually has a valve set up for hydraulic engagement of the TCC in place of the TCC solenoid and computer controlled engagement. GM 4L60E Valve Body Forward & Reverse Abuse Bore Plug (2) TCC Isolator & Regulator Valve Kit Click the button below to add the Sonnax 4L60E 4L65E 4L70E Sure I ordered a TCC valve spring for a 4l60e transmission, one each for a 60E and a (80E spring, just in case. *TCC control valve, TCC regulator valve, and Actuator Feed Valve updated to address common wear problems. This severe wear causes fluid exaust problems and fluid pressure loss. If you need a complete rebuild kit, check out our COMBO KIT PAGE. SK® AODE AODE – 4R70W 1991-2008 Ford/Mercury: Lincoln, 1994 up Mustang, T-Bird, Bronco Light Trucks Calibration and Assembly Upgrade Installs in 10 minutes during your repairOur very best kit and recommended starting point for all 4L60E rebuilding. This is a primary cause for TCC-related slip code and overheated converters. Reverse Servo Abuse Bore Plug 4L60E Parts HOME VIDEOS STORE ARTICLES ABOUT CONTACT. ) since the shifting was extremely hard from 1st to 2nd gear. Valve body kits Code Name - Description Bench Buddy brushes easily remove small burrs and polish the inside of a valve bore with virtually no enlargement of the The most common cause is the TCC Regulator Valve bore is worn & bypassing TCC regulator oil to exhaust. 5. Monster Transmission provides transmission parts for all transmission year, make, and models. high quality top of the line fiber pan gasket. Boring out the valve was the fix years ago, but since then a simple drop in valve with o-rings is the most common. this overhaul kit will consist of these items;all the rubber seals and o'rings for the transmission. The new piece does not move in the bore. fuelly. Valve Body Parts TCC Regulator Valve Kit Fits all years & EC3 units Yes 77754-04K TCC Regulator Valve Kit Non-EC3 units, ‘97-earlier Yes 77754-03K Isolator Valve Kit For worn isolator bore in unserviced VB or for any factory-remanufactured VB Yes 77754-ISO 60 Throttle Plunger Valve Kit OE #93 77966-93K 60 Throttle Plunger Valve Kit OE #94 4l60e Manually Shift Conversion - Download as PDF File (. Whatever you do, make sure the compressed (solid) height of the spring isnt taller than the stem of the valve. ALLISION 1000/2000/2400 E-Shift Valve Bore Re-Sizing Tool. Fits -- 1996 to 1999 GM 4L60E Valve Bodies. Transmission Shop Rebuild Parts 4T65E TCC Apply Valve; Continuous oscillation of the converter apply valve in the cast-aluminum bore causes bore 1996-2000 GM 4L60E Transmission valve body the control valve body. Billet steel high gear hubSevere wear of the TCC regulator valve bore caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. Forward accumulator 17. As long as the bore is in the valve body, the hydraulic package will apply. FIL02 453E TCC Solenoid 4L60E 1870 P1870 "Code Buster" Combo Kit 1996 To 2006. toledo ttk is the best quality overhaul kit on the market. Check the yellow Figures 1 through 4 illustrate the modified hydraulics and how this manually shifted 4L60E works. Tool Sonnax 77754-r2 Tcc Regulater Valve Reamer 4l60e 4l65e 4l70e 4l70 New. the main cause for this is a worn TCC regulator valve bore in the The 3 Most Common Problems With The 4L60E Transmission I would turn my attention to the valve body. I think if I had just clean and put it back the  4L60E Valvebody Quick Tip - YouTube www. 4L60E 4L65E 4L70E Transmission TCC Regulator & Isolator Valve Kit Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Sleeve manufactured from highly wear-resistant aluminumHardcoat anodized aluminum regulator valve combats premature No, only the TCC Isolator & Regulator Valve Kit, as well as accumulator pistons. 5 2. 1st, 4th or Torque Converter Control (TCC) lockup available Vehicle: 1996 Chevy Tahoe. SC-4L60E Valve Body Parts TCC Regulator Valve Kit 77754-04K until the reamer r eaches the bottom of the valve bore. 5 - $361. 11. Billet tuff torque input shaft, turbo or glide spline . What is a 4L60E Transmission? The 4L60-E is an automatic shift, four-speed overdrive, longitudinally positioned transmission. No 1st, 4th or TCC lockup The last common problem I found on the 4L60E transmissions was a boost valve leaking internally in the valve body. 4l60e build and questions; Servo bore with servo return spring (Ie AFL valve, TCC valve/sleeve etc? any input would be appreciated. An improved torque converter clutch regulator valve assembly for installation within a mating bore in the valve body of an automatic transmission, said torque converter clutch regulator valve assembly including a regulator apply valve and an isolator valve disposed in fluid communication between a line pressure circuit and a converter apply Valve Body Pro 464 Perrymont Ave San Jose, CA 95125, USA. Yes the separator plates wear at the second feed check ball seat,but the regulator valve is the most common thing to wear in ALL 4L60E's. It has been considered to be the best rendition of the finest overdrive automatic transmission ever produced. TCC PWM solenoid (396) broken/cracked. We stock various Valve Bodies. 4L60E TCC Regulator Valve Tool Kit (for GM Reman VB's) A604 / A606 Over This is the 4L60E TCC modification first done back in the mid-late 1990s which consists of staking the TCC regulated apply valve in the full-open position, eliminating the PWM function. A total of 7 thrust washers in all. Bench Buddy Transmission Valve Body Bore Brushes Superior Products Bb100 4l60e 4l65e 4l70e Accumulator Valve Forward Abuse Bore Plug Inc. Take the end cap off the tcc regulator valve and put the pump slide spring in the bore and use it to pin the regulator valve against the bottom of the bore then put the end cap back in and put the clip in. this code is usually due to a worn bore. Remove the pan and valve body from the transmission. 4L60E, 4L65E, 4L70E Sonnax Pinless Accumulator Piston Kit FWD, 1-2 & 3-4 - $44. FordTechMakuloco 98,505 views In a nutshell, the valve body does chronically wear in the 4L60E especially in the lockup PWM bore. Manual Low (Figure 1)In manual low, manual low pressure is supplied through tube 1 to a fitting adapter (dummy solenoid) to the 1-2 shift valve bore. the valve to the right can be seen like the Hi, My car threw a P1870 and started hard shifting from 1-2 after a run on the highway yesterday. This wear occurs in the bore that contains the TCC isolator and regulator valves, and results in poor, or no, TCC apply. Learn Me: Improving a 4L60E TCC PWM valve or PWM eliminator There are improved PWM valves that allow less line pressure blowby and can accommodate for a worn Learn Me: Improving a 4L60E TCC PWM valve or PWM eliminator There are improved PWM valves that allow less line pressure blowby and can accommodate for a worn Press out the stator support, remove the TCC valve asembly, boost valve assembly, Hi-pressure checkball, spring and pin and finally the filter. This is a tool for establishing a baseline spark advance table for your tuning efforts with MegaSquirt® or MicroSquirt® controllers. It lasted a few days. Because of the oscillating action of the TCC valve in operation, wear in the valve bore of the valve body casting is common. 4L60E / 4L65E TCC Regulator & Isolator Valve Kit Fits any application, including '98-later EC3 units The Oslilating motion of the TCC Regulator Valve causes severe wear in the valve bore. The way the valve train is set up is, the isolator valve first spring in the middle and the converter reg valve against the bore plug. The fix is a "boost valve boring kit" that reams out the valve bore, then you install a larger valve. Read honest and unbiased product reviews from our users. from a warn tcc/pwm 4L60E 4L65E 4L70E TCC Valve 2004 & up. all the paper gaskets for the transmission. Inspect TCC regulator valve bore for wear (Figure 2). Improves and restores correct drivability with added durability. . These hardened steel converter clutch apply valves will eliminate bore cross leakage with a Teflon seal. Two bolts (arrows in pic) hold it in and it can be pulled from its bore. sometime in 1989 they quit casting the bore in the valve body, but up until then you could remove GM 4L60E AUTO TRANS . 1993 up 4l60e hd replacement unit--same upgrades as the 700r4 Plus the following valve body updates as a build practice: Sonnax acuator feed limit valve update-----restores hydraulic integrity to this commonly worn valve bore 4L60E 4L65E 4L70E Transmission TCC Regulator Valve & Isolator Sleeve Kit Sonnax - $37. 4L60E TCC Valve P1870 Code Fix 2000 To 2003 Fitzall Ebay. 2006-Later valve bodies have a different TCC regulator valve. com/youtube?q=4l60e+tcc+valve+bore&v=YK46XJbAJqg Jan 13, 2015 Producer of the video has created this to share his experience to aid your installation, but does not take responsibility for any missing or  How a PWM-controlled TCC (Torque Converter Clutch) works - Fuelly www. Exhausting apply pressure also diminishes line pressure, which results in burnt clutches. If the bore is O. 4L60E Repair Guide - Disassembly bolts and slide the TCC solenoid valve out of the pump body. springs have been found to be improperly wound. There are pump pullers designed specifically for this purpose, but a careful use of a large flat bar will coax the pump and its sealing ring out of the front cavity bore with no damage. The bore they reamed out, is most likely the TCC Isolator valve bore. This allows converter oil charge reduction and PWM boost oil loss. This will eliminate the pwm function. 2. TCC Valve Eliminator. Tool Sonnax 84754-tl3 Regulated Tcc Apply Valve Bore And Reaming Kit 4t65e New. the AFL balance hole in plate must be opened with drill supplied in reamer kit. 77754-04K Isolator Valve Spring Regulator Valve Regulator Sleeve Any application, including ’98-later EC3 units Severe wear of the TCC regulator valve bore caused by oscillation of the OE 4L60E 4L65E 4L70E Transmission Regulator & Isolator Valve Kit Sonnax 77754-04K Any application, including '98-later EC3 units Severe wear of the TCC regulator valve bore caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. 4-3 sequence valve (383) stuck in bore by sediment. All components in this kit are compatible with '93-'94 non-PWM units EXCEPT the TCC apply valve 77805E-K installed in the pump. 500 boost valve to help with holding power The 1870 is a tcc slip code, You can try a valvebody repair first if you like, depending on how bad it is, it may or may not fix the problem. Pinless accumulator pistons 11. 800), but also two different valve diameters. This is a discussion on A4 4l60e Trans won't shift out of 1st gear May also have worn boost valve (can replace in the pan). Rebuild it and flipped the tcc valve. Good info here. Converter clutch valve (224) stuck closed (Check for debris in valve bore). 85 the front pump is a cast iron pump with a pump gear set up similar to a th400. Restores pressure regulator booster valve function without replacing worn booster valve and sleeve assembly. * Fixes P1870 & other codes caused by worn valve body TCC regulator valve bore. PERFORMANCE PACK HP-4L60E-01 Instructions ig Perormance RANSISSIN Parts PERFORMANCE Figure 2 OE TCC Regulator Valve Bore Inspect for wear. 4L60E 4L65E 4L70E 4L75E Transmission Shift Kit Valve Body Rebuild goofy tcc apply, and p1870 AFTER an overhaul (seen this from a bunch of "trans" shops around View your shopping cart in the TRNW Store. Creating an Initial Spark Table for Tuning. TCC Valve Eliminator * Fits -- 1996 to 1999 GM 4L60E Valve Bodies. PRODUCTS; but its indexing bore diameter was changed. This issue is the main cause for TCC-Related Slip Code P1870. This reamer allows the installation of SONNAX re-designed TCC regulator sleeve and valve and requires only cutting oil and a speed handle. 4 quarts (9. 83 $ 33 83. This would be like the 4T60-E tcc reg valve line up. -1-2 Accumulator Pistons, upgraded to aluminum, replace the OE plastic pistons that can cause premature clutch failure. likely the TCC valve bore tcc apply valve kit th700. I also know that this is a PWM lockup, however It's due to wear in the valve body bore around the TCC PWM valve. 74 Vw 2. 4l60e tcc valve boreSevere wear of the TCC regulator valve bore caused by oscillation of the OE valve Torque Converter Journal: 20 Years Later - What's New with 4L60-E PWM In GM 4L60-E, 4L65-E and 4L70-E unit, severe wear of the TCC regulator valve bore is caused by oscillation of the OE valve allows regulated converter apply Dec 9, 2014 There is a common modification for the 4L60-E TCC circuit that causes . Kent-moore J-5830-5 Engine-valve Bore Reamer . 2017-07-10 · The torque converter clutch solenoid (NOT the PWM solenoid- funny how they give them such close names) is a physical part of the wiring harness and must be removed. Billet steel high gear hubBuy 4L60E TCC VALVE UPGRADE REPLACEMENT FIXES P1870 CODE 7 FITS '96-'99 MADE IN USA BY TECKPAK: Valve Body Kits - Amazon. More 4L60E QUESTION: I am seeing a pattern of 1996-1997 4L60e's come in with a code P1870, which in common transmission English is RATIO ERROR. 4L60E TCC Valve - blocking the valve vs. 4l60e toledo overhaul kit fits 93-2003toledo ttk is the best quality overhaul kit on the market. Remove the clip that holds the TCC Valve in place. P1870 Code Fix for CAN bus Systems. Reconditioning the bore and installing Sonnax TCC regulator and isolator valve kit 77754-04K restores normal TCC operation by reestablishing the hydraulic integrity of this circuit. tool02 & 77754-rm5 or 4l60e. #20T (700R4 & non-PWM 4L60E) #20E (4L60E PWM units). Features & Benefits Kits include a highly wear-resistant aluminum regulator sleeve to provide full support for the valves. A quick fix for this is to lock the PWM valve into full pressure position (via inserting a spring in the bore), and getting on/off TCC engagement as in the pre-electronic 4L60E (the 700R4s used an on/off strategy until 93 when they became the 4L60E). Product information for the 45 category of the TRNW Store. 4L60E / 4L65E Isolator Sleeve Kit Restores Hydralic Integrity of the Valve Circuit Symptoms this May Address: Clutch failure Code 1870 TCC cycling TCC Slip Wear in the TCC Regulator Valve bore causes loss of converter release oil pressure. No 3-4 Upshift 3-4 shift valve (385) stuck in bore by sediment. Buy 4L60E TCC VALVE UPGRADE REPLACEMENT FIXES P1870 CODE 7 FITS '96-'99 MADE IN USA BY TECKPAK: Valve Body Kits - Amazon. 9. TCC apply valve installation 10. 4. In stock form, the steel spool valve rides in the Aluminum bore in the valve Severe wear of the TCC regulator valve bore caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. b. This problem is so common in the 4L60E that just about every one of them will do this. An improperly wound spring. I had just figured since someone before me tried the whole Transgo kit, then I tried a different valve body with Sonnax regulator/bore, it was unlikely to be VB. Additionally, converter feed can leak past the excessive clearance, combine with signal oil and cause premature lockup. AFL valve (tool required) 18. The mod is reversible if you stake carefully. 129. Sonnax TCC Regulator & Isolator Valve Kit For Transmissions 4L60E 4L65E Sonnax Forward & Reverse Abuse Bore Plug For 4L60E Sonnax Transmission Upgrade Parts The 4L60E transmission weighs 146 pounds dry, and 162 wet. 05. Trans Go SK-4L60E shift kit has a replacement TCC Regulator Valve that will fix even badly worn Valve Bodies. The TCC apply valve also wears in the pump,and will cause the same thing. This is a primary cause In GM 4L60-E, 4L65-E and 4L70-E unit, severe wear of the TCC regulator valve bore is caused by oscillation of the OE valve allows regulated converter apply Severe wear of the TCC regulator valve bore caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. The 2-3 servo control valve 4L60E Transmission and Torque Converter. 4L60E TCC VALVE UPGRADE REPLACEMENT FIXES P1870 CODE 7 FITS '96-'99 MADE IN USA BY TECKPAK I have the 4L60E transmission which has design problem with the bore in The Sonnax TCC regulator valve kits allow you to restore hydraulic integrity without replacing the bore. Valve Body Pro 464 Perrymont Ave San Jose, CA 95125, USA. TCC apply valve inspection 9. Bearing and planetary inspection 2. to the appropriate solenoids and install the TCC solenoid and valve. 42 rear end. Replace worn TCC Regulator Valve: 1-2 accumulator piston cracked or stuck Often these complaints can be caused by the constant oscillation of the steel TCC regulator apply valve wearing the aluminum bore, resulting in a loss of converter apply oil pressure. S. AFL should not have movement AFL visible bore wear EPC solenoid bore wear. No reaming. TCC Lockup RPMs jumping- newbie to 4l60e as well as others about the TCC Bore wearing out causing this issue. Servo seals 4. Description 101 Pressure Regulator Valve & Boost Valve Assembly 102 TCC Apply Valve 103 Pressure Relief Ball Severe wear of the TCC (torque convertor clutch) regulator valve bore, caused by oscillation of the OE valve, allows regulated converter apply pressure to exhaust. Pump cover 8. va03 pwm 3-2 tie-up, 3-4 clutch failure 3-2 control/reverse abuse bore plug 4l60e. The inner valve will need to remain in the bore or reinstalled. SL01 NI Servo Pisto Bore Seal 93-ON 1 4L60E. Sam Boyce - Ebaum744 2,385 views Accumulator Valve Train (not in this kit) Actuator Feed Limit Valve Kit (Reamer #77754-TL required) TCC Regulator Valve Kits (Reamer #77754-R2 required) 1. 4L60E TCC Problem Hey All, Finally got my engine swap done(CA Legal Too! to do with the PWM valve bore in the valvebody being trashed. Also included with this ACDelco 4L60E Remanufactured Valve Body is an upgraded ACDelco separator plate. • Control valve body TCC signal valve stuck • Solenoid screen blocked • TCC solenoid valve internal damage • Engine speed sensor internal damage No upshift in 1st gear could be caused by a worn or damaged 2-4 band or if the band anchor pin is not engaged. Leakage also is caused by the hardened steel isolator valve wearing the aluminum valve body bore. can catch in the bore, which may prevent the TCC apply valve from moving into. When the bore of the converter clutch signal valve wears out, second clutch signal oil leaks to exhaust (see non-PWM valve design illustration, figure 1). Continue to turn TransGo will be closed Monday 31st and Tuesday 1st Regulator valve, TCC Regulator Regulator valves with "reusable tools" for installation and to bore Valve body. In GM 4L60-E, 4L65-E and 4L70-E unit, severe wear of the TCC regulator valve bore is caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. Part # Year Sleeve Length Valve Diameter D74507FD 5 0 - 3 9 0 0 9 . 0t 2004+ A Brand New 4L65E, 700-R4, 4L60, 4L60E input drum capsule w/ check ball. Replace if converter clutch valve in the pump AFL valve: make sure the AFL valve bore in valve body is not worn or repair/replace with Sonnax kit 77754-09K . This includes all of the washers in the transmission for 700R4, 4L60, 4L60E, 4L65E. If this procedureis tried just by  How To Install Teckpak A74741Q Repair Valve in a 4L60E Without www. or . For minimal bore wear, Superior Transmission Parts (850-575-0788) produces a PWM powershift valve to replace the converter clutch valve that the TCC ON/OFF solenoid operates. the applied position. May set code P0741, TCC stuck off. Sonnax E4od 4r100 Transmission Bore Sizing Tool (4L60E V8 With Bonded Rubber Valve Body Gasket) 93-ON 4L60E. 2014-03-12 · The valve body is removed, both tcc regulator and isolator valves are removed, their bores reamed, sleeves installed with new valves. transmission said he 102E Upper Valve Body 4L60 NI Servo Pisto Bore Seal. 90 thru 93 valve bodies were produced without the valve bore. 4l60e I replaced the forward pinless piston from sonnax. Includes steel balls for plugging existing pin bore Buy 4L60E TCC VALVE UPGRADE REPLACEMENT FIXES P1870 CODE 7 FITS '96-'99 MADE I had to use the smaller o rings the bore wasn’t worn enough for the thicker ones TCC Regulator & Isolator Valve Kit Part No. Severe wear of the TCC regulator valve bore caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. 4L60E / 4L65E I would rather bore the tcc valve to size . S. I drop the valve body. This bulletin addresses wear in the valve body TCC isolator/regulator bore TCC Regulator: Reference Sonnax guidelines for tool 77754-SERV. In went a Sonnax TCC apply valve 77805E-K (has teflon ring on it to make up for a worn bore in the pump), a new TCC solenoid and an -TCC control valve, TCC regulator valve, and Actuator Feed Valve updated to address common wear problems. A harsh 1-2 shift or DTC P1870, caused by wear in the control valve body, may be difficult to duplicate when the transmission temperature is below 93°C (200°F). 00. Case and bore prep 3. If the pump surface is beyond saving by flat sanding it on a granite block or equivalent very flat surface, then it will need to be machined flat at a machine shop. " Adjust 1-2 shift firmness without removing VB. Sonnax 77754-r2 Tcc Regulater Valve Reamer 4l60e 4l65e 4l70e 4l70 Tool. htmlJan 19, 2009 From 1993 to 1994, the 4L60-E utilized a simple ON/OFF solenoid in . 4L60E ; 4L65E; 4L70E *THIS LISTING IS FOR THE TOOL KIT ONLY AND NO VALVES OR VALVE . The PWM solenoid causes the TCC regulator valve to rapidly oscillate causing a lot of wear in it's bore. I believe I have a worn TCC regulator bore in my 4L60E transmission valve body. If the TCC regulator valve bore is worn, the only way to restore the TECKPAK USA PROFESSIONAL QUALITY UPGRADE REPLACEMENT TCC VALVE FIXES P1870 CODE 7 4L60E '95-'00 4-SPEED AUTOMATIC Nov 9, 2014 My 04 Trailblazer was jerking @ 65 mph. 1 6 0 5 . Valve Assy, 4L60E/4L65E Forward Abuse and Rev Abuse (Contains; 1 Valve, 1 Spring, and 1 Bore Plug)(Sonnax) (Will Repair Only One Forward Or One Rev Assy) T-77754-R2 Price: $143. Posted by Regis on Monday, April 29th, 2013 . sales@valvebodypros. TCC regulator valve (tool required) 20. Forward Abuse Bore Plug22. com/forums/f16/how-a-pwm-controlled-tcc-torque-converter-clutch-works-10720. every 4L60E I rebuild and they work great. These year 4L60E’s had problems with the TCC regulator valve wearing out its bore in the valve body. The code lights when there is more then 100 rpm or so when locked up. Or try a Transmissionmission flush by a shop that uses BG brand products. The stock valve will wear the valve body bore over time and can cause lockup apply problems and trouble codes. This is a common problem with a 4L60E automatic. When pressure is 4L60E TCC VALVE UPGRADE REPLACEMENT FIXES P1870 CODE 7 FITS '96 I have the 4L60E transmission which has design problem with the bore in the valve body wearing out Sonnax TCC Regulator Valve #77754-04K/03K which requires a special reaming tool, that re-bores worn out aluminum 4L60E valve bodies which is an issue when time for a 4L60E was first used in 93. Buy 4L60E TCC VALVE UPGRADE REPLACEMENT FIXES P1870 CODE 7 FITS '96-'99 MADE IN USA BY TECKPAK: Valve Body Kits - Amazon. 4 quarts (11. 1-2 Shift shudder at WOT; delayed or abnormal 1-2 shift: 1-2 accumulator piston cracked or stuck cocked in the bore. Remove the TCC outer valve and the spring. ). This includes washers, bearings, even the whole crafted plate case for the body itself. Easy fix in the pan. The Oslilating motion of the TCC Regulator Valve causes severe wear in the valve bore. 4L60E was first used in 93. The most common cause is the TCC Regulator Valve bore is worn & bypassing TCC regulator oil to exhaust. Boost Valve 6. 30. Finally, take a look at the bore in which the piston rides The worn valve bore is allowing fluid to pass by the valve in the worn area. com -TCC control valve, TCC regulator valve, and Actuator Feed Valve updated to address common wear problems. 5 Transmission Trans Solenoid Kit Jetta Rabbit Beetle Passat 2. It came with 2 balls to plug the pin bore? Universal TCC Lock-Up Kit for 700R4 and 2004R needs to provide a good seal inside the bore where it is housed. Ford 5. The boost valve would bleed off pressure that is needed to properly engage the clutches and the torque converter. va13 broken springs, 3-2 bind, 2-4 band overheat 3-2 control valve spring th700. The PWM valve bore for the torque converter lockup gets worn. 14. 81″ torque converter) of transmission fluid, Top 30 Common 4L60E Transmission Problems and Repair Below is a list of common transmission problems with the GM 4L60E Transmission and possible solutions to repair. TCC solenoid (66). 89. *1-2 Accumulator Pistons, upgraded to replace the OE pistons that can cause premature clutch failure. This valve fits all GM 4T65E and Volvo 4T65EV/GT transmissions. OEM TCC Componets 6. S74741QAK TCC Regulator with sleeve , 4L60E , 1998-up Sonnax Part # 77754-04K , Alt. $292. Its extremely common. Bj Lucci 3 года назад hello. -Tru-Flat stator qualification and machining process. sonnax kit 06-06-2007, 11:06 PM I have a 2000 camaro with 85k and the 3800 V6 & 4L60E automatic with a very intermittant famous problem, the hard 1-2 shift. Take the end cap off the tcc regulator valve and put the pump slide spring in the bore and use it to pin the regulator valve against the bottom of the bore then put the end cap back in and put the clip in. valve and TCC regulator valve lineup wears out the bore it lives in. , go to Step 2 for pressure limiter installation instructions. David J and Lynne J Shepherd wrote: > There is a special reamer to enlarge the valve body bore to install the > steel sleeve correcting the wear problem. Separator plate modification 19. The later valve bodies, 86 thru 89, kept the valve bore, but were non-functional. It could be the Reverse Servo Abuse Bore Plug 21. TCC always locked: TCC apply solenoid circuit shorted to ground, TCC solenoid blockage (easy fix in pan), or TC broken (must remove trans and replace TC). The redesigned Sonnax TCC apply valve addresses these concerns. txt) or read online. 7 liter Gas. cause TCC to be inoperative is the converter clutch valve apply spring. This is a primary cause for a TCC-related 1870 slip code and overheated converters. Common issues with this are overheated converters, harsh 1-2 shifts, burned 3-4 clutches, and failed lock up converter clutch. com 4L60E 4L65E New Fitzall A74741QA TCC Valve P1870 Code Fix For Your 2000-2003* Transmission. The Sonnax TCC regulator valve kits, 77754-03K and 77754-04K, include a highly wear resistant aluminum sleeve to restore hydraulic integrity of the apply circuit and provide full support to the valve to prevent side loading. This leakage allows the TCC apply oil to exhaust to the sump. CSI Automotive Sales, Service & Parts. Repair: The valve should move upward freely for about ½ “. Application 2001 and UP 4L60E Transmission 1. 4L60E / 4L65E Severe wear of the TCC regulator valve bore caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. 2004-09-13 · David J and Lynne J Shepherd wrote: > There is a special reamer to enlarge the valve body bore to install the > steel sleeve correcting the wear problem. The condition may be due to wear in the control valve body. Will fit years from 1982 - UP. When this leakage occurs, the TCC solenoid will not receive sufficient converter clutch signal oil. 408-287-4500. On early pumps you file some notches on the inside edge of the bushing bore and "stake" the bushing in place while using red lock tight. 4L60e Valve body replacement question Also, looks like this could be done with the tranny still in the truck, true statement? And finally, does anyone have a recommendation for a superior rebuilt valve body supplier (if one is better than the others before I buy a standard rebuild). Nov 15, 2011 I've heard that there is an issue with the TCC valve bore wearing and causing a pressure loss. The valve body has extreme wear . while still sealing the worn valve bore. Pre ‘07 GM Vehicles Equipped with CAN Bus Application 2000 up 4L60E, 4L65E & 4L70E transmissions Install the replacement valve into the bore until it is The seal can wear as well, this picture doesn't illustrate a good example of a TCC solenoid actuator valve seal. shift 1-2 accumulator piston cracked or stuck cocked in the bore. May also have worn boost valve (can replace in the pan). then just follow highlighted steps below. Perform leak test. 4L60E transmission slipping during lockup. This valve is designed to overcome minimal system leaks and is only for EC3 applications. can i use a valve body gasket labeled vb and ca on a 2000 4l60e transmission with a 2000 seperater plate. 4l60e tcc valve bore I have a hard 1-2 shift at lower RPM in town driving but not noticeable under harder acceleration which would make higher pressures. Separator plate modification 13. I also know that this is a PWM lockup, however Severe wear of the TCC regulator valve bore caused by oscillation of the OE valve Torque Converter Journal: 20 Years Later - What's New with 4L60-E PWM In GM 4L60-E, 4L65-E and 4L70-E unit, severe wear of the TCC regulator valve bore is caused by oscillation of the OE valve allows regulated converter apply TECKPAK USA PROFESSIONAL QUALITY UPGRADE REPLACEMENT TCC VALVE FIXES P1870 CODE 7 4L60E '95-'00 4-SPEED AUTOMATIC Nov 9, 2014Dec 5, 2015Jan 13, 2015Nov 15, 2011 I've heard that there is an issue with the TCC valve bore wearing and causing a pressure loss. Symptom - TCC SLIP WITH STALL STUMBLE Causes – Converter clutch valve (224) stuck open (TCC is applying). 4L60E, 4L65E, 4L70E Sonnax Pinless Accumulator Piston Kit FWD, 1-2 & 3-4 Symptoms: Aluminum pistons wear at the pin bore Burnt bands Burnt clutches Cracked pistons Delayed engagement Forward Slip Cause: Wear at the piston pin bore due to repeated reciprocation and/or cracks in the plastic accumulator piston. 6 Mercedes Sonnax E4od 4r100 Transmission Bore Sizing Tool 36948-12 Sonnax 4l60e Transmission Tcc Regulator Stops TCC Slip Code P1870. Modifications include updates to servos, the PR system, and valve body accumulators. va16 & 77754-rm5 requires tool 4l60e. GM 4L60E AUTO TRANS . May also have worn boost valve. usually sets after a highway speed long drive. The transgo kit doesnt fix the problem completely while if caught early addresses allot of problems it doesnt work for every one. 64″ torque converter) or 11. pdf), Text File (. dodgeram10 Posts: 74 If you own one you will someday see code 1870 slipping TCC,worn out valve body. 4L60E. Cause The condition may be due to wear in the control valve body. Common 4L60E Failures. 052" with …The 3 Most Common Problems With The 4L60E Transmission . TCC Solenoid and GM Convertor Lock-up Problems. 4L60E 1870 Code Repair Kit TCC Regulator & Isolator Valve Kits & Tools Click the button below to Gm 4l60e Valve Body 1995 With Pwm Tcc 1 Year Warrantysonnax Updates, Dyno Test. 77754-04K • Isolator Valve • Spring Ensure valve bore and body is clean and cleared of dirt and debris. It is a single valve that replaces the TCC valve. The transgo kit doesnt fix the problem completely while if caught early addresses allot of problems it doesnt work for every one. this overhaul kit will consist of these items;all the rubber seals and o'rings for the transmission. 1997 GMC Pickup K1500 4L60E TRANS TCC/INTERNAL SLIPPING/DTC P1870 DIAG Virtual Wrench 4L60E THRUST WASHER KIT. Here Is The Kit You Have Been Waiting For!!!!! This Kit Will Solve And Cure The P1870 TCC Fault Code On Gm 4L60E Automatic Transmissions. FREE Shipping on eligible orders. Gm 4l60e Valve Body 1995 With Pwm Tcc Lifetime Warranty Updated, Dynoed. How to remove 4L60E valve body and replace plastic accumulator pistons in place then remove the solenoid from its bore (arrow in pic). com Pressure Control Solenoid Valve Retainer TCC PWM Solenoid Valve Retainer TCC Regulator Apply Valve Bore Plug Retainer 315 1-2, 3-4 Shift Solenoid Assembly 317 1-2 Shift Valve Spring 318 1-2 Shift Valve 320 Torque Signal Regulator Valve Spring 321 Torque Signal Regulator Valve 322 Pressure Control Solenoid Valve Assembly Valve Body Assembly In addition to whole valve bodies, Monster provides individual parts that comes with the body itself, making up the 4L60E valve body assembly. After that well look at the actual modifications and procedures. by Sonnax. 4L60E/4L60 Rebuild Procedures Cast-closed TCC shift valve bore, typically 1989 and later: To make any changes to minimum TCC engagement speed or TCC PTR sensitivity, this valve body must be replaced with a 1988 V8 Gas valve body that has a TCC shift valve bore. #77754-04K VALVE, 4L60E TORQUE CONVERTER CLUTCH REGULATOR VALVE KIT 1998-UP — — USE WITH EC3 SHIFT STRATEGY TCC Regulator & Isolator Valve Kit Part No. Several. ATF would leak by the worn valve and cause the converter clutch to chatter slip and fall in and out of lockup. Sonnax TCC regulator sleeve kit 37947–09K Charles Knupple: thanks had 1870 code fixed tcc valve but still had this problem so my son did this for old dad and sure enough that solenoid was the problem all along computer did not no it was bad Superman: Please help. The OEM TCC valve on 4l60-e units wears the bore, creating pressure leaks that affect performance. The reamer should cut easily. most transmissions never got it and the factory installed two aluminum plugs in the passage to render them useless. Accumulators: You can make significant shift feel changes with the accumulator springs and condition of the pistons. If your looking for a cheap fix an old trick is to take a 4l60e inner pump slide spring cut it down about 3/8 of an inch. A. These are only a few updates and upgrades we make to our 4L60E transmissions Complete system correction and recalibration kit installed to address several QE flaws. 8. View Details. Common problems with this transmission are: Failure of the solenoids: This is an electronic transmission and it uses electrical solenoids to control many of the functions of the transmission, including the shifting between gears and the lock up torque converter. Before proceeding with the installation please read all of the B&M 4L60E Shift Improver Kit and pieces of old gaskets can become lodged in valve bores and/or 700 / 4L60E. This allows for a nice, soft engagement of the TCC lock, but it can result in the valve vibrating in the bore and wearing it. Tool Sonnax 84754-tl3 Regulated Tcc Apply Valve Bore And Reaming Kit 4t65e New Vw 2. TCC control valve, TCC regulator valve, and Actuator Feed Valve updated to address common wear problems Completely remanufactured pump with new line bore bushings TCC control valve, TCC regulator valve, and Actuator Feed Valve updated to address common wear problems Completely remanufactured pump with new line bore bushings 4l60E Problems and Solutions If this is your first visit, be sure to check out the FAQ by clicking the link above. common issue on the 4L60E. The solenoid regulator valve is likely out of position. durability of the gear train is similar, as gear train has remained the same and the actuator feed limit valve bore. The Novak Guide to the GM 4L80E Automatic Transmission. * Tcc apply valve and tcc pressure regulator valve both fail causing po741 or po742. va09 requires tool Valve Assy, 4L60E/4L65E Forward Abuse and Rev Abuse (Contains; 1 Valve, 1 Spring, and 1 Bore Plug)(Sonnax) (Will Repair Only One Forward Or One Rev Assy) T-77754-R2 Price: $143. Line pressure leakage at the TCC regulator bore is related to band and 3-4 clutch failure. D74507EK 5 0 - 3 9 0 0 9 . Ive already rebuilt my transmission and used a valve from tecpack A74741Q . S-10 Forum > Engine and Drivetrain Tech > Transmission & Rearend > 4L60E valve body Sonnax TCC Apply Valve Kit (77805E-K) inspect each piston and bore and That is a very common issue with the 4L60s. Lubegard Shudder Fix will at least fix this for awhile. in the picture i am pointing to your TCC valves that are, unlike the 4L60e or 700R4, located in the pump as well. Pump body 7. c. computer integrated into the valve body of the No TCC lockup: Brake pedal switches improperly adjusted (always on), TCC solenoid failed (easy fix in the pan), TCC clutch worn out (must remove trans and replace TC). This is a primary cause for a TCC related P1870 slip code and overheated converters. 4L60E Transmission Valve Body fix P1870 Transmission Component Slipping trouble code. Remove the valve plug from the bore. 3. The shifting of the valves in the valve body are controlled by the vehicles CPU. the pan), TCC clutch worn out (must remove trans and replace TC). Wear at the piston pin bore due to repeated reciprocation. Vehicles with a 700-R4 or 4L60-E transmission have numerous converter overheat and lock-up complaints related to valve bore wear. started stalling and dying when in gear - 350 motor 4L60E trans Motor wants to stall while in gear (but doesn't do it out of gear once over 1000 rpm it dThe VE table represents the volumetric efficiency and air/fuel ratio at each rpm and kPa (0=total vacuum, 100=atmosphere, etc. va04 non-pwm 4l60e. From what I can tell its common with these 4L60E's and is caused by where in the TCC valve bore. tool02 requires tool th700. Turbine shaft O-ring seal (618) omitted. No 2-3 Upshift 2-3 shift valve (368) or 2-3 shuttle valve (369) stuck in bore by sediment. However, all port locations for vacuum testing are the same. This condition may also be an indication of a damaged 2-4 band or 3-4 clutches. Also, is there any possibilty the isolater valve bore is worn out? If you can crimp a length of steel tubing on the stem of the valve it provides a handle. 2018-09-01 · Have a shop verify line pressure, and provided no valves in the Torque Converter Control (TCC) hydraulic circuit are worn, replace the torque converter. high quality top of the line fiber pan gasket. The 4L60E is probably the single most popular automatic transmission currently in use by American consumers. com/youtube?q=4l60e+tcc+valve+bore&v=uclWHt0iZkU Dec 5, 2015 In this video, i show what i do to the valvebody on every overhaul to help prevent code P1870 or P0894. all the paper gaskets for the transmission. 4L60e transmission. 5 out of 5 Shared by Others 4L60E Transmission P1870 Transmission component slipping (early valve body) - Transmission Repair SONNAX #77754-03K VALVE, 4L60E TORQUE CONVERTER CLUTCH REGULATOR VALVE KIT 1993-1997 TCC Regulator & Isolator Valve Kit, 4L60E Part No. Back in day the TCC regulator valve (reg valve) used to be a 2 piece design but was updated because of the reg valve wearing out the bore of the VB (valve body). Sometimes this can be misleading, because you don't know for sure if the cause is a bad solenoid, dirt in the valve body, or a bad signal from the ECM. 4R100 Lockup Mod Schematic/Let's Learn Relay Logic *PLEASE READ DESCRIPTION FIRST* - Duration: 17:21. vender: # W-S74741QAK Requires T-77754-R2 Reamer, This kit is recommended for EC3 shift strategy. Between the years 1996 and 2000 GM had wear issues with the 4L60E valve bodies. No Coast Clutch Pressure • Inspect the bore plug for wear at the TCC regulator valve. BODIES!!!!! This reamer is specially designed for use with SONNAX TCC regulator valve kits 77754-03K and 77754-04K. If code 1870 is stored,or pending,the valve body is worn at the TCC regulator valve. Sonnax now offers a replacement TCC regulator apply valve kit 34994-01K that will prevent valve-bore related problems. Fixes P1870 & other codes caused by worn valve body TCC regulator valve bore. A complete thrust washer kit for the popular GM and Chevy 700R4, 4L60E overdrive automatic transmissions from 1982-up. 4L 3v Engine Noises You Shouldn’t Ignore: How To Tell When a Timing Job is Really Needed - Duration: 11:24. This will eliminate the pwm function. 720" when “L” pin is installed properly. Billet steel high gear hubThe TH700R4 is a stronger tranny, a disadvantage is slightly higher ratios for all gears (except 3rd of course) I say "disadvantage" for those of us who want to get a little more gas mileage out of it. 3-2 Downshift Abuse Plug 04-09-10 Page 2 SC-4L60E-IN ©2010 Sonnax Industries. With SSB solenoid removed, the end of the casting to edge of the long aluminum plug will measure 1. K. $33. You may have to register before you can post: click the register link above to proceed. va20 requires tool th700. Includes installation instructions. 1 1 7 4 . Changing fluid frequently is a must for preventative maintenance. 4L60E Repair Guide - Assembly pump bushing out of the housing bore with a suitable tool. GM addressed the problem in 00,time will A harsh 1-2 shift or DTC P1870, caused by wear in the control valve body, may be difficult to duplicate when the transmission temperature is below 93°C (200°F). I'm not a professional so take my opinion how you want. Includes "Booster Recovery System. The valve for the A solenoid has a spring behind it and the valve for B is two separate parts, since one is actually a shuttle valve. Always use the 4L60E bushing as it has a Teflon type coating. It requires 8. Cause. The replacement valve has o-rings on every surface (3) and it is a one-piece valve eliminating two pieces and a spring of the original. Servo check valve 12. 28; 17d 15h 59m ; 77754-tl Valve And Tool Sonnax Reamer 4l80e Actuator 4l60e Kit Tool Feed J In D4 drive range, with the TCC engaged, the TCC slip speed should be -20 to +50 RPM. Excessive pump bore-to-valve clearance allows TCC signal oil to leak past the spool, preventing lockup or causing lockup to disengage when hot. Transmission service and repair tools. *NOTE: 1995 4L60-E valve bodies have a different manual valve, 3-2 control valve and TCC regulator valve. The common cause for this is the TCC valve wearing the bore and allowing a leak. Depending on mileage and fluid condition will determine the next course of action. Visually inspect solenoid. "GM 4L60E 03-08 Valve body with tested solenoids GMC Chevy 4216995 T4l60E 03-08 #TransmissionPartsNow" 4L80E TCC PWM Solenoid 1991 - UP Chevy GM GMC transmission solenoid new 34418 Chevrolet Parts Saving Money Diy Chevy Trucks Cars Bricolage Truck Car Gm 4l60e Valve Body 1995 With Pwm Tcc 1 Year Warrantysonnax Updates, Dyno Test Tool Sonnax 84754-tl3 Regulated Tcc Apply Valve Bore And Reaming Kit 4t65e New Sonnax 77754-r2 Tcc Regulater Valve Reamer 4l60e 4l65e 4l70e 4l70 Tool "GM Splice in Lock-Up Solenoid 4L60 4L60E 4L65E TCC on/off Tahoe Chevy GMC 54425B #TransmissionPartsNow" "Fix worn switch valve bore with simple easy to instal Home » Automatic Transmission Parts » Chevrolet, GMC, Geo » Search by Transmission Model » 4L60E (M30), 4L65E (M32) » Sonnax Parts Sonnax Parts GM 4L60, 700-R4, 4L60E, 4L65E, 4L70E Sonnax Parts Severe wear of the TCC regulator valve bore from the OE valve allows regulated converter apply pressure to exhaust. 10. Volumetric efficiency is the ratio of the amount of air actually fills the cylinder to the amount that would fill the cylinder in a static situation. See Figure 1 to identify a SERV valve body. Updated Sun Shell A chronic problem with both OE and thicker aftermarket shells is failure when splines continue to strip or the shells break under normal conditions. Sonnax 68942-23k Tcc Damper Valve Sleeve Kit 722. Severe wear of the TCC regulator valve bore from the OE valve allows regulated converter apply pressure to exhaust. I have 267,627 miles on the tranny and was told by a tranny sales rep I needed to replace the spring with an upgraded GM spring. D74507FE p U - 6 0 0 0 8 . Pressure Regulator Valve 5. Addresses Shuttle, Bind-up or Flair on 2-3 Shift, Slips with throttle in 3rd and/or 4th, TCC Codes & Rough kickdown at Highway Speeds due to slow TCC release. 85 As mentioned above, the 4L60E (“E” stand for Electronic) is a fully electric transmission. 75. Sensors built into both the motor and transmission send data to the computer, and the computer uses this data to determine when it is the best time to shift gears. 82-93 1 4L60E. No pre-drilling required. Severe wear of the TCC regulator valve bore caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. 900/06-Up 1. These units can be identified by the 12-pin case connector, only having a 3-2 solenoid in valve body (four solenoids). We offer a plethora of Transmission Valve for your vehicle needs. I repeat, it should remain attached to the wiring harness. Also we are Torque converter remanufacturers & Automatic Parts Suppliers. kit is made of a highly polished steel to resist sticking in the valve body bore. Checkball 14. STEP 17 AFL BORE INSPECTION AND REPAIR Prop the AFL valve open by 3/32" from underneath. 77754-03K Isolator Valve Spring Regulator Valve Regulator Sleeve Fits ’97-earlier Non-EC3 units only In GM 4L60-E, 4L65-E and 4L70-E unit, severe wear of the TCC regulator valve bore is caused by oscillation A how to. TCC apply valve 4L60E, 4L65E, 4L70E Sonnax Pinless Accumulator Piston Kit FWD, 1-2 & 3-4 - $32. TCC Regulator Valve Kit 77754-04K No ‘drop in’ valve or modification to the TCC regulator valve can maintain correct TCC op-eration, maintain correct TCC apply pressure, and prevent line pressure leakage due to a worn bore. Eliminates the need to replace TCC Regulator and Isolator valves. Install Sonnax TCC regulator and isolator valve kit 84754-01K to resolve these problems. I would rather bore the tcc valve to size

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