Trans does not upshift out of first, speedometer reads zero at all times: Could be VSS failure. 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.
Also, if the accumulator housing walls are scored, the housing must be replaced.Ĥ. Check the yellow spring inside the accum housing for breakage.
4L60E SERVO ASSEMBLY DIAGRAM CRACKED
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. Worst case: poor line pressure rise (see below).ģ. Double check by using the pressure gauge and watch for a big drop when the PCM commands 2nd gear. Middle case: leak in the 2nd gear apply circuit (servo assembly or 1-2 accumulator). 1-2 shift does not happen at WOT (Wide Open Throttle) until you let off the gas: Best case: try replacing the TPS. May also have worn boost valve (can replace in the pan).Ģ. 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. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell.
4L60E SERVO ASSEMBLY DIAGRAM FREE
For a complete diagnosis on your GM 4L60E Transmission problem, contact us for a Free Diagnostic.ġ. This list is merely a guide to the possible solutions. Although you may have some of these symptoms / problems with your 4L60E Transmission, the repair solution may differ. Top 30 Common 4L60E Transmission Problems and Repairīelow is a list of common transmission problems with the GM 4L60E Transmission and possible solutions to repair. It requires 8.4 quarts (9.64″ torque converter) or 11.4 quarts (11.81″ torque converter) of transmission fluid, The 4L60E transmission weighs 146 pounds dry, and 162 wet. From bells to valve bodies, added solenoids, changes in pump and convertors. The 4L60E Transmission has went through many changes/improvements over the years since it first came out in 1982. (Most transmission models are not distinctively noted with the “E” since all GM transmissions are now also controlled electronically.) The Late 4L60-E was released in 1997 in and fully phased into wide use through GM by 1998 in both RWD car platforms (including the C6 Corvette) and trucks in both 2wd and 4wd configurations. The 4L60-E is the “E”lectronically shift controlled version of the 4L60. The 4L60-E is GM’s successful continuation of the ever-improving 700R4 (aka “4L60” since 1990), introduced in 1982. The 4L60-E is found in nearly every GM rear-wheel-drive application, including the C/K Truck, Sonoma, Jimmy, Tahoe, Yukon, Astro, Safari, Suburban, Bravada, Firebird, Camaro and Corvetteīefore the Late 4L60-E transmission, there was the Turbo 700R, which was introduced in 1982. It has been considered to be the best rendition of the finest overdrive automatic transmission ever produced. The 4L60-E is an automatic shift, four-speed overdrive, longitudinally positioned transmission.
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