No TCC Apply , MIL On , TCC Surge , Possible P0740 , P1870 , or 39 after Installation of Reman ( SRTA ) 4T60 / 4T60E - kw case cover converter slip transmission #PI01880A - (Mar 18, 2004)

No TCC Apply, MIL On, TCC Surge, Possible P0740, P1870, or 39 after Installation of a Reman (SRTA) 4T60/4T60E

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

Condition/Concern:

Vehicle model years 1985 through 1999 remanufactured (SRTA) 4T60 and 4T60E transmissions build between 8/03 and 12/03 (Julian dates 3215 through 3337) may exhibit no or very little TCC apply, slipping TCC or possibly setting DTC P0740, P1870 or 39 immediately after installation.

Recommendation/Instructions:

Dealer is to inspect the channel plate sleeve for being mispositioned. The channel plate sleeve tcc feed passage should line up with the channel plate passage. If the passages are not aligned the dealer is to replace the channel plate and if the torque converter shows signs of overheating (torque converter body discolored) also replace the torque converter. This channel plate sleeve is located in the channel plate where the oil pump drive shaft passes through and thrust washer item #514 rests against, see SI document 44158.

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

Models:

(1985 - 1999 all General Motors passenger cars equipped with a 4T60 or 4T60E) and (1990 - 1999 Chevrolet APV Lumina /Venture with a 4T60 or 4T60E) and (1990 - 1999 Pontiac APV Trans Sport with a 4T60 or 4T60E) and (1990 - 1999 Oldsmobile Silhouette with a 4T60 or 4T60E)

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

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