4T60-E SERVICE REPLACEMENT TRANS. ASSY. (SRTA INTRO)

SUBJECT: TRANSMISSION APPLICATIONS: 4T60-E SERVICE REPLACEMENT TRANSMISSION ASSEMBLY (SRTA) PROGRAM INTRO AND ON-CAR REPAIR GUIDELINES

TRANSMISSION MODELS: VEHICLE APPLICATIONS: 1991 C, E, K CAR

(Revised to change Class Room Number on Page 2)

BULLETIN COVERS:

The HYDRA-MATIC 4T60-E Service Replacement Transmission Assembly (SRTA) Program beginning with the 1991 model year and limited on-car repair guidelines.

The HYDRA-MATIC 4T60-E is a new transaxle model with electronic shift controls to control shift points.

SRTA ADVANTAGES:

- A SRTA is the product of a highly successful, customer satisfaction driven program that parallels the existing HYDRA-MATIC 3T40, HYDRA-MATIC 4T60 and HYDRA-MATIC 4L60 programs.

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

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.

CORE RETURN PROCEDURES (THM 4T60-E)

For the THM 4T60-E remanufactured transaxle, please refer to the return procedures outlined in the THM 700-R4 transmission core return program attachment to the original SRTA announcement Bulletin No. 67 with the following exception:

ALL WOODSTOCK SERVICED DEALERS ARE TO RETURN THE CORES TO:

GENERAL MOTORS OF CANADA LTD., KUEHNE AND NAGEL DISTRIBUTION SERVICES 6451 NORTHWEST DRIVE MALTON, ONTARIO L4U 1K2

Remember, when completing the core return forms, the core part number must be prefixed by an "E".

The addition of the THM 4T60-E transaxle to the SRTA Program includes all the same features as offered with the 440-T4 transaxle and the THM 700-R4 transmission on the SRTA Program.

GENERAL GUIDELINES:

o On-Car Service or SRTA:

- Dealership overhauls for the entire transaxle will be allowed providing the technician has taken the HYDRA-MATIC 4T60-E two- day training class number 17020.16. Until then, limited on- car repairs and SRTA will be the only service options.

- Transaxle conditions considered for SRTA usage:

All repairs that cannot be corrected by replacement of the parts shown in Figure 1.

- Dealer HYDRA-MATIC 4T60-E transaxle repairs include:

Limited on-vehicle serviceable items. Reference Figure 1.

COOLER FLUSHING:

NOTICE: 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. Use Kent-Moore Tool J-35944 to flush the cooler.

1991 HYDRA-MATIC 4T60-E SERVICEABLE COMPONENTS:

ILLUSTRATION PART NUMBER NUMBER DESCRIPTION ----------- ------------ ----------

08666007 4 SEAL, ASSEMBLY - AXLE OIL *11509041 9 BOLT (SPEED SENSOR) *10456034 10 SPEED SENSOR ASSEMBLY *11508600 12 BOLT (FORWARD SERVO COVER) *08651916 13 FORWARD SERVO COVER *08651567 14 SEAL O'RING (FORWARD SERVO COVER) *12337905 23 BOLT (BOTTOM PAN) *08651914 24 TRANSAXLE OIL PAN *08676250 25 TRANSAXLE OIL PAN GASKET (GASKET IS REUSABLE UNLESS DAMAGED) 08676164 28 BALL CHECK ASSEMBLY 08651654 29 COOLER PIPE FITTING *11509511 30 BOLT (MODULATOR TO CASE) 08627650 31 RETAINER MODULATOR 08662967 32 MODULATOR 10054241 33 MODULATOR O'RING 08658375 34 MODULATOR VALVE *08651620 35 ELECTRICAL CONNECTOR *08651621 36 ELECTRICAL CONNECTOR O'RING 08656536 39 RETAINING RING *08651915 40 REVERSE SERVO COVER 08658111 41 SEAL O'RING (REVERSE SERVO) 08656394 50 NUT FLANGED 08656395 51 CONICAL WASHER 08656392 52 SCREW & CONICAL WASHER 08651472 53 SIDE COVER 08644902 54 and 55 SIDE COVER GASKET KIT *08651909 100 FILTER ASSEMBLY 08656613 101 SEAL ASSEMBLY FILTER 08644637 409 SEAL ASSEMBLY (LEFT SIDE AXLE) 08664812 525 SEAL ASSEMBLY (CONVERTER)

IMPORTANT: COMPONENTS NOTED WITH ASTERISK "*" ARE UNIQUE TO THE HYDRA-MATIC 4T60-E. REMAINING COMPONENTS ARE COMMON WITH THE HYDRA-MATIC 4T60.

Parts are currently available from CANSPO for the part numbers:

08666007, 11509041, 11508600, 08651916, 08651567, 12337905, 08651914, 08676250, 08676164, 08651654, 11509511, 08627650, 08662967, 10054241, 08658375, 08651620, 08651621, 08656536, 08651915, 08658111, 08656394, 08656395, 08656392, 08651472, 08644902, 08651909, 08656613, 08644637 and 08664812.

SRTA PROCESSING PROCEDURE:

Each SRTA unit will be shipped in a container which must be used for core return of the original HYDRA-MATIC 4T60-E assembly. A SRTA Information Packet is included with each SRTA unit. The contents of this envelope are to be removed and used as described with each illustration on the following pages.

SRTA PROCESSING PROCEDURES - INFORMATION PACKET:

The contents of this envelope include Limited Warranty Information, Dealer Product Feedback Form, Core Exchange Return Procedure, and a pre-addressed return mailing envelope. A dealer representative is to explain to the customer all warranty information contained in this envelope.

SRTA PROCESSING PROCEDURES - CORE EXCHANGE RETURN:

The core return procedure provides detailed instructions for the GM dealer on handling the SRTA and original HYDRA-MATIC 4T60-E units. The shipping labels are included in the package of information that is included with every HYDRA-MATIC 4T60-E SRTA unit.

SRTA PROCESSING PROCEDURES - FAILURE ANALYSIS INFORMATION:

This Product Feedback Form is to be completed by the service manager and/or technician. Fill out this form as completely as possible to provide information which can be used for analysis. This valuable input can result in future product refinement through corrective action. Insert the white copy of the completed form and a copy of the repair order into the SRTA Information Packet envelope, reseal the envelope and wire tag it to the bell housing of the unit being returned for core exchange. Return the yellow copy of the completed Product Feedback form, using the postage paid envelope, to Hydra-matic Division.

HYDRA-MATIC 4T60-E TRANSAXLE IDENTIFICATION INFORMATION:

Transaxle identification information and the SRTA model replacement chart will assist in selecting the correct SRTA unit to order from your local Parts Distribution Centre.

HYDRA-MATIC 4T60-E SRTA MODEL REPLACEMENT CHART:

SRTA SRTA Model Part Description ----- ---- ----------- 1AHW 8651957 Cadillac C-Car (Export) 1AYW 8651960 Cadillac E/K-Car (Touring) 1AMW 8651952 Cadillac E/K-Car 1APW 8651958 Cadillac E/K-Car (Export) 1AVW 8651959 Cadillac C-Car 1AZW 8651953 Cadillac C-Car (Limo) 1YMW 8651950 Buick/Oldsmobile C-Car 1YPW 8651955 Buick/Oldsmobile E-Car 1YZW 8651951 Buick/Oldsmobile C/E-Car

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.