SRTA PROGRAM-ON VEHICLE REPAIR FOR 'V' CARS WITH 4T80E TRANS

REVISION 06/18/92

THIS BULLETIN IS BEING REVISED TO ADD ADDITIONAL CADILLAC INFORMATION.

REVISION 11/25/92

THIS BULLETIN IS BEING REVISED TO CHANGE THE PART NUMBER ON THE SRTA REPLACEMENT FOR MODEL 2AJN AND ADD E AND K CARS.

REVISION 04/28/94

THIS BULLETIN IS BEING REVISED TO INCLUDE THE 1994 MODEL YEAR AND TO REMOVE RESTRICTIONS ON "IN" DEALERSHIP REPAIRS. PLEASE DISCARD PREVIOUS DIVISIONAL PUBLICATION NUMBERS: CADILLAC 92-I-45 GM OF CANADA 93-7A-133 ----------------------------------------------------------------------

SUBJECT: INFORMATION ON SRTA PROGRAM AND CHANGES TO ON VEHICLE REPAIR GUIDELINES

MODELS: 1993 CADILLAC ALLANTE 1994 CADILLAC CONCOURS 1993-94 CADILLAC ELDORADO AND SEVILLE WITH 4.6L ENGINE (VINS Y, 9 - RPOS LD8, L37)

TRANSAXLE APPLICATIONS: HYDRA-MATIC 4T80-E (RP0 MH1)

THE SERVICE REPLACEMENT TRANSAXLE ASSEMBLY (SRTA) PROGRAM FOR THE 4T80-E PARALLELS THOSE EXISTING FOR THE HYDRA-MATIC 3T40 (THM 125C), 4T60 (THM 440-T4 AND F-7), 4L60 (THM 700-R4), AND THM 200-4R.

SRTA ADVANTAGES:

O GMSPO PARTS DISTRIBUTION CENTERS ARE COMMITTED TO 48-HOUR MAXIMUM DELIVERY TIME FOR ALL SRTA MODELS WITH NO VIP CHARGES.

O ALL CURRENT MODEL YEAR SRTA'S ARE NEW PRODUCTION UNITS AND ALL PAST MODEL YEAR SRTA'S ARE DESIGNED AND REMANUFACTURED TO CURRENT ENGINEERING SPECIFICATIONS.

O SRTA'S ARE OFTEN LESS COSTLY THAN A MAJOR TRANSAXLE OVERHAUL.

SERVICE GUIDELINES: (FIGURE 1) ------------------ O FULL SERVICE OVERHAUL AND REPAIR CAN NOW BE PERFORMED ON ALL 1993-1994 HYDRA-MATIC 4T80-E TRANSAXLES. REFER TO YOUR SERVICE MANUAL FOR PROPER REPAIR PROCEDURES.

THE SRTA EXCHANGE PROGRAM REMAINS AS AN OPTION.

O TO PROPERLY DIAGNOSE THE 4T80-E TRANSAXLE AND DETERMINE WHEN A SRTA IS INDICATED, IT IS RECOMMENDED THAT DRIVEABILITY AND TRANSMISSION SERVICE PERSONNEL TAKE THE NORTHSTAR POWERTRAIN CONTROLS COURSE 16022.01 AND THOROUGHLY UNDERSTAND THE TRANSAXLE INFORMATION IN SECTIONS 6E AND 7 OF THE 1993-1994 CADILLAC SERVICE INFORMATION MANUAL.

SERVICE PROCEDURES:

THE FOLLOWING MUST BE PERFORMED WHENEVER A 4T80-E TRANSAXLE REPLACEMENT IS ELECTED:

O RECORD ALL TRANSAXLE ADAPTIVE CONTROL INFORMATION BEFORE REMOVING THE TRANSAXLE FROM THE VEHICLE. REFER TO FIGURE 2, PCM ADAPTIVE CONTROL INFORMATION FORM. A COMPLETED COPY OF FIGURE 2 MUST BE RETURNED WITH THE RETURNED 4T80-E TRANSAXLE TO GM POWERTRAIN DIVISION. TRANSAXLE ADAPTIVE PARAMETER INFORMATION MUST BE RESET AFTER INSTALLING A SRTA. FIGURE 2 ALSO PROVIDES INFORMATION ON RESETTING TRANSAXLE ADAPTIVE CONTROLS AND OIL LIFE INDEX.

O COOLER FLUSHING MUST BE PERFORMED WHENEVER A 4T80-E TRANSAXLE IS REMOVED FOR SERVICE. THIS INCLUDES SRTA INSTALLATION, MAJOR OVERHAUL, PUMP OR TORQUE CONVERTER REPLACEMENT, OR WHEN FLUID CONTAMINATION IS DETERMINED. USE KENT-MOORE TOOL J-35944 TO FLUSH THE COOLER FOLLOWING THE PROCEDURE LISTED IN SECTION 7A OF THE 1993-1994 CADILLAC SERVICE INFORMATION MANUAL.

SRTA PROCESSING PROCEDURE:

O EACH SRTA WILL BE SHIPPED IN A REUSABLE CONTAINER WHICH MUST BE USED FOR CORE RETURN OF THE ORIGINAL 4T80-E TRANSAXLE. A SRTA INFORMATION PACKET IS INCLUDED WITH EACH SRTA (FIGURE 3).

O THE CONTENTS OF THE SRTA INFORMATION PACKET INCLUDE A SRTA PRODUCT FEEDBACK FORM, CORE RETURN PROCEDURE, WARRANTY INFORMATION AND A WIRE TAG FOR ATTACHING THE INFORMATION PACKET TO THE RETURNED 4T80-E TRANSAXLE (FIGURE 4).

O THE CORE RETURN PROCEDURE PROVIDES DETAILED INSTRUCTIONS ON HANDLING BOTH THE SRTA AND ORIGINAL 4T80-E TRANSAXLES. THE SHIPPING LABELS FOR CORE RETURN ARE INCLUDED IN THE SRTA INFORMATION PACKET. (FIGURE 5)

O THE SRTA PRODUCT FEEDBACK FORM (FIGURE 6) AND A PHOTOCOPY OF THE PCM ADAPTIVE CONTROL INFORMATION FORM (FIGURE 2) **MUST** BE COMPLETED BY THE SERVICE MANAGER OR TECHNICIAN. FILL OUT THESE FORMS AS COMPLETELY AS POSSIBLE AS THIS INFORMATION IS USED FOR PRODUCT ANALYSIS AND CORRECTIVE ACTION.

O INSERT THE COMPLETED SRTA PRODUCT FEEDBACK FORM, PCM ADAPTIVE CONTROL INFORMATION 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 ORIGINAL 4T80-E TRANSAXLE BEING RETURNED. RETURN UNITS TO YOUR PRODUCT DISTRIBUTION CENTER (PDC) FOR SHIPMENT TO GM POWERTRAIN WAREHOUSING FACILITY.

HYDRA-MATIC 4T80-E PARTS INFORMATION:

MODEL REPLACED MODEL SRTA SRTA (FIGURE 8) YEAR DESCRIPTION MODEL P/N -------------- ----- ----------- ----- ---- 2AJN 1993 4.6L V CAR 2AJN 8684918 3.71 AXLE

3AAN 1993 4.6L E/K CAR 3AAN 8684919 3.11 AXLE

3AJN 1993 4.6L V/E/K CAR 3AJN 8684920 3.71 AXLE

4AAN 1994 4.6L E/K CAR 4AAN 8684956 3.11 AXLE

4AJN 1994 4.6L E/K CAR 4BCN 24201795 3.71 AXLE

4BCN 1994 4.6L E/K CAR 4BCN 24201795 3.71 AXLE

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO. PART NUMBERS ARE ACCURATE AT TIME OF PRINTING AND ARE SUBJECT TO CHANGE.

WARRANTY INFORMATION:

O FOR TRANSAXLE REPLACEMENT USE LABOR OPERATION K7000 AT 7.5 HOURS FOR V CAR AND 6.9 HOURS FOR E AND K CARS.

O FOR ON-VEHICLE SERVICE REFER TO THE CADILLAC LABOR TIME GUIDE FOR THE APPROPRIATE LABOR OPERATIONS AND TIMES.

REFER TO THE GENERAL MOTORS PARTS AND ACCESSORIES POLICY AND PROCEDURES MANUAL FOR CORE RETURN PROCEDURES.

FIGURES: 6

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.

COPYRIGHT 1994. GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.