30 Problemas comunes 4L60E Transmisión y Reparación | Charlotte NCPublicado por Beth Jackson el Lun, Mar 18, 2011 @ 07:21 AM Correo electrónico el artículo in Share 7 delicioso 0diggsdigg ¿Qué es una transmisión de 4L60E? La 4L60-E es una caja de cambios automática de cuatro velocidades overdrive, transmisión longitudinal colocado. Se ha considerado que la mejor versión de la transmisión de sobremarcha mejores jamás producidos. La 4L60-E se encuentra en casi todos los GM rueda trasera de la unidad de aplicación, incluyendo el camión C / K, Sonoma, Jimmy, Tahoe, Yukon, Astro, Safari, Suburban, Bravada, Firebird, Camaro y Corvette Antes de la tarde 4L60-E de transmisión, no era el 700R Turbo, que se introdujo en 1982. La 4L60-E es la continuación exitosa de GM en el cada vez mejor 700R4 (también conocido como "4L60" desde 1990), introducido en 1982. La 4L60-E es la "E" lectronically cambio de control de versiones de la 4L60. La tarde 4L60-E fue lanzado en 1997 y completamente implementado en un amplio uso a través de GM en 1998, tanto en plataformas de vehículos RWD (incluyendo el Corvette C6) y camiones en ambas configuraciones 2WD y 4WD. (La mayoría de los modelos de transmisión no son claramente señalado con la "E", ya que todas las transmisiones de GM son ahora también controlado electrónicamente). La transmisión de 4L60E ha pasó por muchos cambios / mejoras a lo largo de los años desde que salió por primera vez en 1982. De las campanas de cuerpos de válvulas, solenoides añadido, los cambios en la bomba y los convertidores. La transmisión de 4L60E pesa 146 libras seca y húmeda 162. Se requiere 8.4 cuartos (9.64 "convertidor de par) o 11,4 litros (11.81" del convertidor de par) de líquido de transmisión, Top 30 problemas comunes de 4L60E Transmisión y Reparación A continuación se muestra una lista de problemas de transmisión común con la transmisión de GM 4L60E y las posibles soluciones para reparar. Aunque es posible que tenga algunos de estos síntomas / problemas con su transmisión de 4L60E, la solución de reparación pueden ser diferentes. Esta lista no es más que una guía de las posibles soluciones. Para un diagnóstico completo de su problema de transmisión GM 4L60E, en contacto con nosotros para un diagnóstico gratuito. 1. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the transmission may help (must remove valve body), or adding a high-viscosity additive or other seal restorer product. También puede haber llevado la válvula de potencia (puede reemplazar en la sartén). 2. 1-2 shift does not happen at WOT (Wide Open Throttle) until you let off the gas: Best case: try replacing the TPS. Caso media: fuga en el circuito de 2 ª velocidad se aplican (montaje servo o acumulador 1-2). Double check by using the pressure gauge and watch for a big drop when the PCM commands 2nd gear. Peor de los casos: aumento de pobres presión de la línea (ver más abajo). 3 . 1-2 Shift shudder at WOT (Wide Open Throttle); delayed or abnormal 1-2 shift; There's a problem ONLY on the 1-2 shift: 1-2 accumulator piston cracked or stuck cocked in the bore. Compruebe la primavera de color amarillo en el interior del acumulador de la vivienda de la rotura. Además, si las paredes de viviendas acumulador se anotó, la vivienda debe ser reemplazado. 4. 1-2 shift is delayed and harsh, may not shift into OD: TPS needs to be checked for smooth and linear electrical response over the entire range of motion. If not, this must be replaced. 5. Trans does not upshift out of first, speedometer reads zero at all times: Could be VSS failure. Rear of transmission needs to be fixed. Transmission needs to come out in order to access VSS. 6. No 3rd or 4th gear: “3-4” clutches are worn out: Needs to be removed and rebuilt. El coche es seguro para conducir (en 2) hasta que te lo arreglen. 7. Sudden grinding noise with no prior warning primarily in 2nd gear, behavior in reverse may be abnormal: sunshell is fractured. Must be removed and rebuilt. Trate de no correr o conducir el coche o daños podría causar. 8. 1st and 3rd only, no 2,4 or R: Sunshell is fractured or splines are sheared off. Transmission must be removed and rebuilt. Trate de no correr o conducir el coche o daños podría causar. 9. No 2nd or 4th gear. 2-4 band is slipping: Servo seals may be damaged. Otherwise, 2-4 band is worn out. Transmission must be removed and rebuilt. Transmission must be removed and rebuilt. 14. No forward movement in OD or D. Manual 2nd. Garras invadido se llevará a cabo después de 30 segundos de este comportamiento. but probably remove and rebuild needed. Trate de no correr o conducir el coche o daños podría causar. Car can be safely driven in D. comprobar los códigos de PCM para una falla en particular en la transmisión que provocan la PCM para ponerlo en el modo de movilidad mínima. clogged EPC filter screen. TCC solenoid blockage. Seal restorer may fix last problem. gradual performance degradation: Poor line pressure rise due to leaking boost valve. y si aparece de nuevo. or worst case: leaky seals throughout. grinding sound. No 1st. Soft shifting. 4th or TCC lockup available. En caso contrario. 3rd and Reverse are only available gears. or TC broken (must remove trans and replace TC). Loud bang. Horrible noise in 4th and feels like the brakes are on: overrun clutches are applying due to a cracked or leaking forward piston. Try to wiggle driveshaft . TCC (Torque Converter Clutch) always locked: TCC apply solenoid circuit shorted to ground. 20. and a binding driveshaft: Snapped output shaft. 13. that's the sign. 16. compruebe el fusible bajo el capó que los poderes de la transmisión. 19. CEL is on: transmission is either in limp-home mode or has lost electrical power. once it's moving you put it back in OD and the car shifts 3rd to 4th on its own and locks the converter at the appropriate time: ShiftB solenoid failed: A wiring problem from PCM to transmission or PCM. Extremely harsh shifts from P or N. you manually shift to 2 to get it moving. Must be removed and transmission rebuilt. buscar un cortocircuito en el circuito como un escape del arnés del sensor de O2 tocar. 15. normal shifts at WOT: EPC (Electronic Pressure Control) solenoid failed. 11. No TCC (Torque Converter Clutch) lockup: Brake pedal switches improperly adjusted (always on). Fijar tan pronto como sea posible. No 1st or 4th available. 12. but it will roll easily (starts out in 4th gear). TCC solenoid failed. Trans seems noisy when moving in 1st and Reverse. Transmission must be removed and rebuilt.10.if more than 0. 18. car feels sluggish off the line. Trans shifts into gear harshly. 17. L1 and R work: Forward sprag is broken. Needs diagnostic testing. Si hay un montón de códigos de error en el PCM. las partes o con problemas finalmente se rompe. Car goes into gear but feels very sluggish like the brakes are dragging. noise goes away instantly .020" play. TCC clutch worn out (must remove transmission and replace TC). loss of all gears. failing EPC solenoid. trans shifts 2nd to 3rd by itself in D or OD and locks the converter: ShiftA solenoid failed Or a wiring problem from PCM to trans or PCM. but L2. then back on it will run normally. car is locked stationary in R. only manually. revise el nivel con el motor apagado y luego encender el motor y volver a comprobar el nivel del líquido. Not a critical failure. Las revoluciones son muy altas. .if you shift to N or the transmission goes into 3rd gear: Reaction planetary is worn out due to high miles or insufficient lubrication. When going from park to either reverse or drive it slams into gear. or refill pan and find the leak. All gears seems to work. Car acts like it's in OD in neutral. avoid running the engine until the transmission is refilled to avoid pump damage. or total loss of fluid. Cheaper to rebuild now (saves further damage to hard parts). 25. If level does not go down when engine is running. engine feels loaded in P. Transmisión eventualmente morir fuerte. the pump is broken. 26. check other sensors such as VSS and TPS. 24. If the response is jumpy or erratic at all. Torque converter shudder in 4th while lockup is engaged. All fluid pumped out through the vent tube: Plugged cooler line. No almacena un código. Para comprobar si hay fallo de la bomba. Transmission does not shift automatically. but not a good sign either. partial or full loss of movement : Front pump bushing walked out. Enjuague las líneas de transmisión más frío y más frío. Internal crossleak feeding the forward clutches all the time. Coche con seguridad se puede conducir con suavidad en las marchas adelante hasta que la reparación.: VSS dropoff w/ Hi-stall converter. catastrófico. can manually shift through all gears. New PCM. pero VSS no muestra movimiento. Transmission must be removed and rebuilt. 23. first gear and/or reverse may be noisy: Either a torrington bearing or a planetary bearing is on its way out. No movement in any gear: pump failure. También podría ser overfiled transmisión. Problem may be intermittent: Check TPS for smooth electrical response. It is drivable until it breaks. Lo más probable es una caja de entrada roto o agrietado adelante pistón hacia adelante significa garras están fusionados. problem goes away when the brake pedal is pressed slightly to unlock converter: Need to verify line pressure. Needle bearings in the pan. replace the torque converter. 1-2 and 2-3 shifts are also harsh. Ocurre después de una quema de neumáticos despegue. 21. Cure: Reprogram PCM for VSS dropoff. no a un tiro de CEL (he oído que va a almacenar un código si pasa tres o más veces). Fluid leak out of the front of trans where the converter connects. May have to replace converter also if hub is scored. 22. 28. Transmission must be removed and rebuilt. Shift suddenly become very hard. all four forward positions work fine: Transmission must be removed and rebuilt. but requires removal and rebuild. 27. When car has been turned off for a bit. check wiring. Note that a leaking front seal usually means the bushing is walking out. 3rd gear starts. If out of fluid. sooner rather than later. 29. Remove transmission and rebuild. replace TPS ( Throttle position sensor) . and provided no valves in the TCC (Torque Converter Clutch) hydraulic circuit are worn. Suburban. If you have any problems with your GM 4L60E Transmission. kits. the repair may differ based upon a visual inspection of the vehicle. Inaddition we provide a large inventory selection for 4L60E electronic controlled automatic transmission overhaul kits. Transmission must be removed and rebuilt. Pontiac Firebird. solenoids. parts including steels. Although you may have a similar problem as those listed above. please contact us at 704-821-3460 to speak with a Charlotte transmission repair specialist. provides free transmission repair diagnostics (diagnostic is free with repair of the transmission). Astro Van. Transmission problems only worsen with time.3 Years / Unlimited Miles.30. Jimmy. Twin Automotive & Transmission. 1-2 or 2-3 shift is slow/soft above part throttle: Transmission is on its way out. solenoids. Charlotte's Transmission Specialist. This wide selection of parts are used in the GM 4L60E automatic transmission in GM Chevy Camaro. In addition to these master overhaul kits we also supply torque converters. fluids. The above top 30 common problems with the 4L60E Transmission and possible solutions for repair are merely a guide. filters. Tahoe. Corvette. GMC Sonoma. GM 4L60E Automatic Transmission Overhaul Kit & Parts General Motors 4L60E Hydra-Matic Transmission electronic (M30 or M32) Free informatiion is provided to assist you in trouble shooting your 4L60E problems. problem prevention kits and in most cases we can supply good take out hard parts and save you some money! . Yukon Safari and Oldsmobile Bravada. S10 pickup trucks and blazers. Data on transmission specification is provided along with maintenance data. in C and K Series Pickups. Twin Automotive offers Charlotte NC 's Longest Transmission Rebuild Warranty . 5. If you need something that is not listed just give us a call toll free 800-216-1632.4qt) with Fluid Recommendation 300mm converter Considering overhauling your Chevrolet 4L60E transmission? The following list of parts are recommended by our remanufacture as being the parts that are most probably needed to put your 4L60-E back in top running order. Ratios: 1st: 3. Chevy Camaro Chevy Corvette S Truck S Blazer Tahoe Astro Suburban Pontiac Firebird C/K Pickup GMC Sonoma Early version Parts Illustration Maintenance Tips Fluid Additive Troubleshooting/Overhaul Overhaul Tips Manual Remanufactured Automatic Transmission What domestic transmission do I have? Description: 4 speed rear wheel drive. Part Number TM4L60E Qty Req Description Troubleshooting/Overhaul Manual Years Price 1993. electronically controlled.294 4L60 non GMC Jimmy electronic & 700R4 GMC Yukon GMC Safari Oldsmobile Bravada Engine Range: 2.2L .696 Rev: 2.8L (11.97 . This is an abbreviated list and other parts are available.4qt) with 245mm converter 10.059 2nd: 1.The follwoing free information is provided: Common Failure Problems Trouble Codes How to get Trouble Codes Clearing Trouble Codes In addition a factory description and ratio information is available. automatic overdrive transmission with a torque converter clutch.$48.9L (8.000 4th: 0.625 3rd: 1.7L Fluid Capacity:(approximate)Fluid Type: Dexron® III Dry: 7. 88 &4 1997 Master Rebuild Kit (no steels) notes 1.3 1993$162. 1993$219.51 51815 1 K51900J-4 B&B-4L60VB Notes: 1 1 Molded Rubber Piston Kit Valve Body Factory remanufactured 1) Kit includes High Energy Band. Thin 3-4 ZHigh energy Frictions.55 on MRK5100ET-S 1 MRK5100K-S 1 MRK5100KT-S 1 K5100E-9 1 Steel kit 4L60E K5100J-9 1 Steel kit 4L60E with Turbulator Steels K51980 1 Bushing Kit K51940 1 Thrust Washer kit (with Selective's) K51941 1 Thrust Needle Bearing Kit 51814A 1 Forward Clutch Sprag Assembly always 1993replace if over 60.77 on under load Low & Reverse Roller Clutch -HD 1993$25.3 & 4 1997 Master Rebuild Kit (no steels) notes 2.76 96 1997$95.99 &4 on Master Rebuild Kit notes 1.82 on 1993$39.97 on MRK5100E-S Master Rebuild Kit (no steels) notes 2.3 & 4 1998$225.55 on 1993$61.81 2.000 miles constant $73.81 on $426. 2) includes filter for shallow pan. Steels and Pressure Plate.93 on 1997$45.99 on 1993$14.97 on 1993$21. 2.3 1998$188. 3) 1993-96 units .on TM4L60E Troubleshooting/Overhaul Manual Supplement 1 1993$48. 5" Complete kit. Add 3 extra Kit includes filter. Increase fluid capacity. 4) 1997-on Corvettes require a unique extension housing seal order 51551JC. extend transmission life.96 The following electronic components may or may not be required.67 on 1993.97 1993 $30. gasket. Part Number 51870U 51870T K51870EC 51871 Description TCC Solenoid (Universal Type .utilize a molded rubber 3-4 piston order 51843E. bolts and pickup quarts of extension.$34.91 .Rostra) TCC Solenoid (Universal Type . convenient drain plug. Deep Transmission Pan NAPK51884 $232.97 1993$194. LPD4589 $118.teckpak) Lock-up Solenoid with Internal Wiring Harness and Pressure Switch Manifold A&B Shift Solenoid Years Price 1993 $30.75 The following components are available to enhance Shifting Part Number K51944E Qty Req 1 Description Valve Body Shift Kit Years Price $78. reduce operating temperatures. 1997-on order pistons K61900J-4. increase transmission rigidity. Remove the heat extend the transmissions life.91 External Cooler Auxiliary Long "True Cool" Lower pressure Drop Cooler 8" x 11" x 1. fluid! Easy installation no modifications necessary. The best way to determine this is by check/consulting computer code(s) or electronic scanner results. Some of the possibilities are: Order Part Application Number Code Price E. J C33B E.85 on 1993 $105. ECCC Lockup Strategy Low stall Strategy 2. L. Z B.73 Lining 1996L-1998 2. $201. Strategy 1 Solid Carbon Clutch $201.16 Hz on Torque Converter ---------.on 51873 3-2 PWM Solenoid 1993$38.5 Hz 51879 33879A Force Motor (EPC) Solenoid Operates at 614 1994$90. Low Stall.73 stall Strategy 2. When rebuilding your transmission it is always recommended that you change the torque converter. J C33C 1996L-98. When ordering the torque converter you must supply the four digit code off of the existing unit (located on a sticker).85 1995 1996$36.73 Strategy1. Solid Carbon Clutch Lining 1996L-1998 ECCC Lockup Strategy High$201.93 on 1995$38.96 51873A 3-2 On-Off Solenoid 51873 TCC (PWM) Solenoid Force Motor (EPC) Solenoid Operates at 292. L. Firebird. Woven Carbon Clutch B. S10 High Stall. Z C35B C35C .8L Cameron. Woven Carbon Clutch $201.73 Torque Converter Lining Installation/Preparation 1998-up. 3.2Lt.Torque Converter Problem & Information For this series transmission there are MANY different possible torque converters (not all listed here). This information should allow you to get the best deal.N. illustrations and specific procedures and specifications. such as electronic data. If you supply the parts and ask for warranty in the end you will save money. These are professional shop manuals which will give you the capability to diagnose problems.R.N. . Jimmy.3L DCLF.OD. Corvette.88 order Kooler Kleen. 4. Your 1995-98 High Stall.0L.R. H. Clutch Lining. 5.4L. PWM = Pulse width modulator We supply only high quality remanufactured torque converters. Always compare pricing for labor. Solid Carbon Lining $209.4.0L Be sure to use our turbo. High Stall Stator PWM Strategy 1 vs.91 B.2. Solid Carbon $286. If you decide to have your transmission overhauled at a local shop you will be armed with detailed knowledge of problems and potential fixes.D.3L.4L.3.00 core deposi Miscellaneous Information and Specifications Maximum Engine Torque: 350 lb (474 Nm) Maximum Speed Shift: Maximum Gearbox Torque: 1-2 6000 rpm 2-3 6000 rpm 670 lb (910 Nm) 3-4 6000 rpm Control Systems: Shift Pattern: (2) two-way on/off solenoids Shift Quality: Variable Bleed solenoid Torque Converter Clutch: Pulse with modulated solenoid control Maximum Gross Vehicle Weight: 8600 lb (3900 kg) 7 Position Quadrant: P.OD. E C48B 1995-98 High Stall. 5. DBAF C48BHP Blazer. 3. Strategy1. cost + $50.91transmission cooling Lining line flush in order to remove debris. and evaluate repair options.1 Troubleshooting/Overhaul Manual These manuals are typically 50 to 85 pages and contain both troubleshooting information and data to support overhaul. 3.8L. K C40B 1995-98 4.1 P.Lining G. F. Strategy 1 Solid Carbon Clutch $209. 5.7L Strategy 1.60cost is $11. Strategy 2 Strategy 1 = Lockup becomes active after 4th gear: Solid Carbon Clutch Lining Strategy 2= Lockup becomes active in 2nd gear with controlled slippage: Woven Carbon Lining.2. metal/rubber clad seals.95 qt. Operating temperature is the single most critical parameter effecting the life of the transmission. This is a typical do it yourself project. Deep Transmission Pan These high quality deep transmission pans can improve the cooling of your 4l80E transmission.94 plus shipping and handling. front and rear bushings. *not included if listed separately Maintenance Tips Regular maintenance cycles and continued checking of fluid levels is critical to the life of your transmission.Fluid Recommendation: Red Line high-Temp ATF Our Red Line high-Temp ATF --is a synthetic GL-4 gear oil for use where Dexron III is recommended. The unit typically mounts in front of the radiator. filter and where applicable Band* and/or Modulator*. Your cost on this transmission life saving product is $54. providing better torque converter efficiency. mixing with existing fluid is not recommended! Our LubeGard "automatic transmission protectant " is recommended as an additive to improve transmission life and maintenance. friction plates. Red Line highTemp ATF your cost $11. Master Rebuild Kit Typically contains gaskets and rubber kit. sealing rings. A higher viscosity allows optimal operation at 70 degrees higher temperature. Superior stability allows hightemperature operation without varnishing valves and clutches. Perfect for heavilyloaded vehicles. steel plates* . We can supply a couple of aftermarket products to help you get the most out of your transmission: Auxiliary Transmission Oil Cooler. Recommended for use after overhaul. The kit includes all parts required to mount the unit and connect to existing cooling lines. The Truco part number LPD4451 is an excellent auxiliary oil cooler to provide additional cooling capacity. Keep the temperature down and fluid fresh helps the units typically last a very long time under normal driving conditions (no teenagers involved). . Magnetic drain plug to attract metal particles (letting in know early about potential problems). 1/8 NPT temperature sending port.36 plus S&H. you can now monitor the transmission temperature if desired. We also offer transmission pans .These pans are manufactured using heavy wall finned aircraft aluminum housings for additional cooling capability. The transmissions are easier to check and service these advance pans and offer the following features: O' Ring seal.93 + S&H can: Prevent overheating. unique larger automatic Furnished hardware. Unit ships with plug. your cost $266. They allow for an additional 3 1/3 quarts of fluid. Extend fluid life Eliminates transmission fluid foaming and oxidation Reduces wear throughout the transmission Eliminates clutch chatter and torque converter shudder Softens and modifies harsh shifts Provides for smoother shifting Eliminates objectionable noises during shifts Keeps valves and governors free and frees stuck valves in valve bodies Raises the thermal and oxidative stability Only product that increases the fluids ability to transfer heat . reducing transmission temperature up to 40 degrees F. snapped into a inverted "V" groove for a positive seal without gasket or silicon (except TorqueFlite). plugs. cap screws and washers are stainless steel in most applications. Fluid Additive Generally we don't recommend additives but we have found that the Lubegard "Automatic Transmission Protectant" at only $13. valve bodies. Consult and follow owners manual for maintenance intervals and requirements. Be sure to get computer trouble code(s). 2) Clean the entire transmission. 17) Use available manuals to ensure proper specifications and clearances. ask your dealers parts department for bulletins. including the valve body. 7) Soak all planet assemblies. we suggest you first study the troubleshooting/overhaul manual. valve body and case for warpage. 3) Check pump. Do not sand or tumble steels when used against High Energy friction materials. 11) Replace all rotating oil control rings. 13) Check all major support bushings and bushings that control lube oil. 15) Pre-lub pumps. This will be a great assistance in diagnosing possible problems.Contains no Ash Always consult and follow owners manual for maintenance intervals and requirements. 14) Pre-lubricate all bushings and thrust washers. Overhaul Tips Before you tear into the transmission. This just might free valves and governors that are possible stuck in valve bodies. add a bottle of our "Automatic Transmission Protectant" and put a few miles on the vehicle.30 minutes. and cases. . 8) Soak all friction materials for 15 . see owners manual for technique to acquire malfunction codes. 10) Inspect all surfaces upon which a band will ride. Just a few strokes with the file to knock off high spots and handling burrs. 4) Flat file pumps. 5) Check all pump gear clearances. 12) Check all oil control rings and rubber products in the bores for proper fit. Twenty-One Steps to Successful Transmission Repair: 1) Do your research locate any technical bulletins pertaining to your transmission. 16) Pre-fill torque converter. 9) Make sure all steels are in usable condition or replace. 6) Check planet pinion end play and side to side motion. possible causes: Complaint Overheated Converter Possible Cause Reference/Fix TCC/PWM Solenoid ATSG Bulletin #98-25 filled with debris Transgo #SK4L60E or Sonnax #77754-03k Replace worn TCC (92-97). i. 4) Check converter for any damage that may have occurred during shipping. take you time! Torque Converter Information Failure modes for torque converters manifest themselves in different ways.e. 19) Take the time to set the total end play. input shaft spline failure. 20) Use a torque wrench on all pumps and valve bodies. slow failure. Torque Converter Installation/Preparation Many torque converter problems can be avoided with proper preparation: 1) Pre-thread converter bolts by hand to make sure there is no sign of stripped threads. instant failure. Do not interchange single element and dual element converters. 21) Always double flush the cooling and cooling return lines to the radiator to remove particles trapped there. . Take your time. 77754-04k Regulator Valve (98-up) these require reamer #77754-R2 ATSG Bulletin #00-41 Overheated Converter LOCKUP Slipping Worn valve body (CODE P1870) casting TCC Slipping (1994-1995) PCM Software ATRA Bulletin #473 The difference between stator design. look inside the converter at the larges set of splines (stator shaft splines). take your time. Change crank spacer (if applicable). loss of power over time.18) Set correct clutch and band clearances. If the splines are split then the unit has a dual element stator. i. 5) Pre-fill converter with a minimum of (1) quart of transmission fluid. 3) Use 320 grit sandpaper or Emory cloth to remove any metal shavings on crankshaft.e. 2) Check and clean crankshaft thoroughly. Following is a short list of problems. not transmission gel. on the pilot. 11) Never. 8) Check flexplate for cracks and be sure there is no more than . Grinding off on thread length from all lockup converter bolts is recommended to avert this type of failure. Lockup clutch failure will occur when the lockup piston applies against and uneven surface. 10) Make sure all electrical ground straps are properly connected. Driving a bolt into the converter cover will create a dimple on the lockup apply surface. 9) Make sure all engine dowel pins are in place and clean. 7) Apply grease. . Never use an impact gun to install torque converter bolts.006" run out.6) Clean all paint off the pilot using 320 grit emory cloth. .Parts Illustration Click to see enlarged illustration In addition to Chevrolet & GMC automatic overhaul kits and repair parts we offer free technical support to assist you in solving your automotive problems. Try replacing the ThrottlePosition Sensor ThrottlePosition Sensor (TPS). or broken sunshell. slipping or no reverse “lo-reverse” clutches are worn out. 1-2 Shift shudder at WOT delayed or abnormal 1-2 shift There's a problem only on the 1-2 shift 1-2 accumulator piston cracked or stuck cocked in the bore. Check the yellow spring inside the accum housing for breakage. speedometer reads Cross member must come zero at all times Speed Sensor out to access Speed Sensor (VSS) failure. Transmission does not upshift out of first. if the accumulator housing walls are scored.. 1-2 shift does not happen at WOT until you let off the gas Middle case leak in the 2nd gear apply circuit (servo assembly or 1-2 accumulator).Common failures on 4L60E. Doublecheck by using the pressure gauge and watch for a big drop when the PCM commands 2nd gear. replace. Easy fix in the pan. or adding a high-viscosity additive such as Lucas Transmissionmission additive or other seal restorer product. May also have worn boost valve. If not. problems any possible repair Problem Symptoms Possible repair It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the Transmission may help (must remove valvebody). Also. (VSS). Easy fix on rear of Transmissionmission. . Slow. may not shift into Over Drive CheckThrottlePosition Sensor (TPS). 1-2 shift is delayed and harsh. the housing must be replaced.for smooth and linear electrical response over the entire range of motion. fluid leak in the reverse apply circuit. Worst case poor line pressure rise (see below). Try not to run or drive the car or further damage could result. Otherwise. ShiftA solenoid failed. The car is safe to drive (in 2nd) until you can get it fixed. If there are lots of error codes in the PCM. and if Control (TCC) lockup available. 3rd and Reverse short in that circuit like an are only available gears. 2-4 band is slipping. behavior in reverse may be abnormal Remove & replace or rebuild 1st and 3rd only. Or a wiring problem from PCM check the underhood fuse that powers the Transmissionmission Will not work in 1st or 4th available Transmission shifts Easy fix in the pan. it pops again. No that powers the 1st. check PCM codes for a particular fault in the Transmissionmission causing the PCM to put it in limp-home mode. Remove & replace or rebuild Sudden grinding noise with no prior warning primarily in 2nd gear. Try not to run or drive the car or further damage could result. look for a Manual 2nd. will not work in 2nd . . Shifts into gear harshly.Will not work in 3rd or 4th gear “3-4” clutches are worn out. sunshell is fractured. car check the underhood fuse feels sluggish off the line. Servo seals may be damaged (can be fixed without removing Transmission. sunshell is fractured or splines are sheared off. 4th or Torque Converter Transmissionmission. CEL is O2 sensor harness on touching exhaust.4th or Reverse R&R Will not work in 2nd or 4th gear Remove & replace or rebuild Transmissionmision is either in limp-home mode or has lost electrical power. Otherwise. 2-4 band is worn out. Also try a Transmissionmission flush with BG brand products if problem continues. (must remove Transmission and replace TC). and the car shifts 3rd to 4th on its own and locks the converter at the appropriate time Easy fix in the pan No Torque Converter Control (TCC) lockup Brake pedal switches improperly adjusted (always on). Car can be safely driven in D. Torque Converter Control (TCC) always locked Easy fix by removing the pan. Transmissionmission goes into gear but feels very sluggish like the brakes are on. clogged Electronic Pressure Control (EPC filter screen. you manually shift to 2 Shift B solenoid failed. Or a to get it moving. or PCM.. or Torque Converter is damaged (must remove Transmission and replace TC). but it will roll easily (starts out in 4th gear). once it's wiring problem from PCM moving you put it back in OD to Transmission. Torque Converter Control (TCC) solenoid blockage. or PCM. overrun clutches are applying due to a cracked or leaking forward piston.2nd to 3rd by itself in Drive or Over Drive and locks the converter to Transmission. Torque Converter Control (TCC) solenoid failed (easy fix in the pan). Torque Converter Control (TCC) clutch worn out Torque Converter Control (TCC) apply solenoid circuit shorted to ground. gradual performance degradation Poor line pressure rise due to leaking boost valve. Overrun clutches will be worn out after 30 seconds of this behavior.. Loud noise in 4th gear and feels like the brakes are on Remove & replace or rebuild Soft shifting. . probably R&R No forward movement in OD or D. but L2. Easy fix in pan. noise goes away instantly if you shift to N or the Transmission goes into 3rd gear Reaction planetary is worn out due to high miles or insufficient lubrication. normal shifts at WOT Electronic Pressure Control (EPC (Electronic Pressure Control) solenoid failed. L1 and R work Forward sprag is broken.if more than 0. and a binding driveshaft Remove & replace or rebuild Transmission seems noisy when moving in 1st and Reverse. Not a critical failure. Transgo HD2-C kit fixes first two without removing Transmission. loss of all gears. Loud bang. that's the sign.failing Electronic Pressure Control (EPC solenoid. but not a good sign either. Fix as soon as possible or hard parts will eventually break.020" play. grinding sound. Seal restorer may fix last problem. Remove & replace or rebuild sooner rather than later. . or worst case leaky seals throughout. Extremely harsh shifts from P or N. Try to wiggle driveshaft . Remove & replace or rebuild Try not to run or drive the car or further damage could result. snapped output shaft. To check for pump failure. Transmissionmission does not shift automatically. 3rd gear starts. Reprogram PCM for Speed Sensor (VSS) dropoff Fluid leak out of the front of Transmission where the converter connects partial or full loss of movement Remove & replace or rebuild Torque converter shudder in 4th while lockup is engaged Lubegard Shudder Fix will at least fix this for awhile.No movement in any gear pump failure. The rpms are too high. Happens after a tire burning take-off. or refill pan and find the leak. Have a shop verify line pressure. but Speed Sensor (VSS) is showing no movement. or total loss of fluid. . Doesn't store a code. avoid running the engine until the Transmission is refilled to avoid pump damage. the pump is broken. Swap in a known-good PCM. If out of fluid. check fluid level with the engine off.. then back on it will run normally. then start the engine and recheck fluid level. and provided no valves in the Torque Converter Control Remove & replace or rebuild. When car has been turned off for a bit. Note that a leaking front seal usually means the bushing is walking out problem goes away when the brake pedal is pressed slightly to unlock converter. Or try a Transmissionmission flush by a shop that uses BG brand products. Speed Sensor (VSS) dropoff w/ Hi-stall converter. can manually shift through all gears. only manually. If level does not go down when engine is running. check other sensors such as Speed Sensor (VSS) andThrottlePosition Sensor (TPS). Front pump bushing walked out. will not throw a CEL.May have to replace converter also if hub is scored. Check wiring. (TCC) hydraulic circuit are worn. replaceThrottlePosition Sensor (TPS). Flush the Transmissionmission cooler and cooler lines. When going from park to either reverse or drive it slams into gear.for smooth electrical response. Internal crossleak feeding the forward clutches all the Transmissionmission acts like time. check the fluid level (car warmed up. Transmissionmission is failing. engine running in Park on level ground) and have the PCM scanned for trouble codes FIRST. car input housing. all forward clutches are fused four forward positions work together.. or cracked is locked stationary in Reverse. This guide is meant for problems that do not show up as PCM codes (like shift A&B solenoid failures. Either a torrington bearing or a planetary bearing is on its way out. Most likely a cracked it's in Over Drive in neutral. All gears seems to work. May be intermittent CheckThrottlePosition Sensor (TPS). If the response is jumpy or erratic at all. catastrophic death. It is drivable until it breaks. Cheaper to rebuild now (saves further damage to hard parts). for example).. first gear and/or reverse may be noisy Remove & replace or rebuild 1-2 or 2-3 shift is slow/soft above part throttle Remove & replace or rebuild Before guessing at Transmissionmission problems. Car can safely be fine driven gently in forward gears until the repair. . Transmission will eventually die a loud. forward piston means engine feels loaded in ark. 1-2 and 2-3 shifts are also harsh. Also could be overfiled Transmissionmission. Shifting suddenly become very hard. replace the torque converter. Fluid pumped out through the vent tube Plugged cooler line. Remove & replace or rebuild Needle bearings in the pan. 225psi is optimum. 1st. Try a different PCM.if an O2 shorts out. If reverse is slow to engage. It will not hurt the car to drive it like this for short periods. Be sure the Transmission has power and the fuse is not blown before doing anything else.N. but use manual 2nd to get the car moving. Beware of coolant contamination . 4th. O2 sensors and at least one other sensor . Max line pressure should be at least 190psi at WOT in 1st or 2nd. and line pressure does not come up to at least 130psi in reverse. If base pressure is low. The driver will have Reverse and 3rd. and be aware that the Transmission will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear. or visit a local Transmission shop) on the pressure test port and go for a drive to verify proper line pressure. If max pressure is low. Base pressure at idle in P. and check for chafing where the cables come out of the PCM. check Electronic Pressure Control (EPC solenoid. put a line pressure gauge ($55 shipped on Ebay.500" boost valve Easy fix by removing the pan. replace the boost valve with a Transgo 0. and Torque Converter Control (TCC) lockup will not be available. it will blow the fuse and the Transmission will go into limphome mode.coolant will cause clutch packs to delaminate and thus cost you a rebuild! Transmission fluid eats radiator hoses! If you find any sign of cross contamination. with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter).NOTE The Transmissionmission is on the same fuse as the MAF.OD should be around 70psi and around 140psi in R. and may be external to the Transmissionmission. Transmission or pump is worn out. Generic GM Automatic Transmission Codes Without Onboard Diagnostics (OBD-II) Code 21 22 Problem TPS circuit TPS out of adjustment Transmissionmission range pressure switch park/neutral switch Code 66 67 Problem 3-2 Control solenoid circuit fault Torque Converter Control (TCC) solenoid circuit Torque Converter Control (TCC) stuck on Speed Sensor (VSS) circuit loss 28 31 69 72 . Also note that many problems that show up as Transmissionmission issues are actually PCM or electrical. The Transmissionmission will default to max line pressure. Secondly. What is "limp-home mode" ? This is a fault mode in which the Transmissionmission either loses electrical power or the PCM deactivates all of the electronics. fix the problem and thoroughly flush both systems IMMEDIATELY. NOTE: Some 94 & 95 models that DO have the A & B terminals still require a scanner.Fuel Pump H .Air Injection E .Transmissionmission output signal 36 37 39 58 59 Transmissionaxle shift control (3.Ground F . Count the flashes on the "CHECK ENGINE" or "SERVICE ENGINE" light.3L) Transmission code-TTS temp high Transmission code-TTS temp low 73 79 81 82 83 Transmission pressure control solenoid Transmissionmission fluid temp high Transmissionmission 2-3 error Transmissionmission 1-2 error Torque Converter Control (TCC) solenoid circuit fault How to get Trouble Codes Turn ignition switch to OFF position Locate Data Link Connector (DLC). see image below. 12 Pin Data Link Cconnector (under dash) A . FLASH. In which case a scanner is required. FLASH. Jumper the A&B terminals(a paper clip or a jumper wire work ok) Turn Ignition switch to ON position.Serial Data Clearing Trouble Codes Diagnostic trouble codes may be cleared by disconnecting the battery ground cable for at least . pause.Torque Converter Control (TCC) G .8L) brake switch(4L60-E Transmission) Torque Converter Control (TCC) knock sensor shorted(4.Test Terminal C .and require a scanner to access them.Serial Data B .Brake Sense Speed Input M . All vehicles after 96 are OBDII. FLASH = code 12 NOTE: Some 94 & 95 models do not have the B terminal. its easy just email us. transmission overhaul kit and accessories for your vehicle.20 seconds. Like to ask a question before you place your order. Reconnect negative battery cable and recheck codes to confirm the repair. . 26 April 2011 ) To order complete our secure electronic EZorder form. talk to a Drivetrain expert get answers to repair or upgrade questions. We offer a complete line of automatic transmissions. Or call the order desk at 1-800-2161632 or 1-877-572-7876. check out the following links: Remanufactured Transmissions Overhaul Kits for other Auto Transmission Performance & Problem Solving Kits for Automatics Last Updated ( Tuesday. also help in automotive diagnostic problems. Free technical support is available call 702-810-3100 ext 106 or 101.
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