SERVICE REPLACEMENT TRANSAXLE (SRTA MODEL UPDATE 4T60-4T60E)

Subject: SERVICE REPLACEMENT TRANSAXLE (SRTA) 4T60 AND 4T60-E AUTOMATIC TRANSMISSION

Model and Year: 1984-90 CELEBRITY 1990-92 LUMINA 1990-92 LUMINA (APV)

TRANSAXLE APPLICATIONS: 1984 - 1992 HYDRA-MATIC 4T60 (ME9) 1991 - 1992 HYDRA-MATIC 4T60-E (M13)

TRANSAXLE MODELS: All

SUBJECT: Service Replacement Transaxle Assembly (SRTA) Model Update

VEHICLE APPLICATIONS: A, W - Car AND U - Van

THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 90-257-7A, DATED MAY 1990. NEW INFORMATION ABOUT THE HYDRA-MATIC 4T60-E SRTA AVAILABILITY HAS BEEN ADDED AS WELL AS THE 1990-92 MODEL YEARS. ALL COPIES OF 90-257-7A SHOULD BE DISCARDED.

BULLETIN COVERS:

This bulletin expands the list of available SRTA part numbers and covers broad usage. The SRTA chart provides a complete list of the 1984 through 1992 models available through GMSPO. If questions arise concerning model application, consult the GMPSO catalog for the latest, most specific usage.

SRTA ADVANTAGES:

A SRTA is the product of a highly successful, customer satisfaction driven program providing the technician a service alternative when addressing diagnostic and overhaul concerns.

All SRTA units are designed and remanufactured to current engineering specifications and are often less costly than major overhaul.

GMSPO Parts Distribution Centers are committed to 48 hour maximum delivery time for all SRTA models, with no VIP charge.

IN THE INTEREST OF CUSTOMER SATISFACTION, SRTA MODELS SHOULD ONLY BE CONSIDERED WHEN THE PROJECTED COST OF REPAIR EXCEEDS THE COST OF A SRTA REPLACEMENT.

SERVICE NOTE:

Cooler flushing MUST be performed whenever a transmission/transaxle is removed for service. It is essential to flush the cooler for SRTA installation, major overhaul, in any case of pump or torque converter replacement, or when fluid contamination is suspected. Time allowance has been added to operation K7000 (Transmission Removal and Replacement). Use Kent-Moore tool J35944 to flush the cooler.

SRTA MODEL REPLACEMENT CHART (4T60):

SRTA Part Model Model(s) Model Number Description Year(s) Replaced ----- ------ ----------- ------- --------- 6CFH 8658928 2.8L HO A-Car 1984-86 4CWH, 5CWH, 5CPH, 5CMH, 5CNH, 6CFH, 6CMH, 6CNH

7CAH 8658957 2.8L HO A-Car 1987 7CAH

8CXH 8668916 2.8L MFI A-Car 1988 8CXH

9YBH 8675934 2.8L A-Car 1988-89 8CMH, 9CLH, 9YBH

9YJH 8675951 2.8L A-Car 1989 9CZH, 9YJH

OYDH 8676913 3.1L W-Car 1990 OCHH, OYKH, OYDH

1YDH 8676925 3.1L W-Car 1991 1YDH

1YHH 8676926 3.1L W-Car Sport 1991 1YHH

1YSH 8676927 3.1L A-Car 1990 OYSH, OLMH, 1YSH

2YBH 8676933 3.1L W-Car Sport 1992 2YBH

2YKH 8676939 3.1L W-Car 1992 2YKH

SRTA MODEL REPLACEMENT CHART (4T60E):

1CWW 8651961 3.4L W-Car 1991 1CWW

2CWW 8651978 3.4L W-Car 1992 2CWW

2WAW 8651982 3800 U-Van 1992 2WAW

SERVICE PART INFORMATION:

*Parts are currently available from GMSPO.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those 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 a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.