DELAYED ENGAGEMENT (REPLACE PUMP COVER ASSEMBLY)

SUBJECT: DELAYED ENGAGEMENT (REPLACE PUMP COVER ASSEMBLY)

MODELS: 1995-96 BUICK ROADMASTER 1995-96 CADILLAC FLEETWOOD 1995-96 CHEVROLET CAPRICE, CAMARO, CORVETTE 1995-96 HOLDEN COMMODORE (VR AND VS) 1995-96 PONTIAC FIREBIRD

1995-96 CHEVROLET AND GMC C/K, M/L, S/T, G MODELS 1996 OLDSMOBILE BRAVADA WITH HYDRA-MATIC 4L60-E (RPO M30)

IMPORTANT: GMC TRUCK DEALERS SHOULD NOT UTILIZE THIS BULLETIN FOR IN-WARRANTY REPAIRS. IF THIS CONDITION IS EXPERIENCED, A GOODWRENCH TRANSMISSION ASSEMBLY SHOULD BE USED. REFER TO BULLETIN 367106A, AUTOMATIC TRANSMISSION SERVICE PROCEDURE CHANGES, PUBLISHED SEPTEMBER, 1995 FOR IN-WARRANTY REPAIRS. OUT OF WARRANTY REPAIRS MAY UTILIZE THIS BULLETIN.

**IMPORTANT: CANADIAN DEALERS SHOULD REPAIR TRANSMISSIONS FOLLOWING ESTABLISHED REPAIR PRACTICES.

CONDITION: (FIGURES 1 AND 2) SOME OWNERS OF THE ABOVE MODELS, WITH A HYDRA-MATIC 4L60-E TRANSMISSION (BUILT BEFORE APRIL 29, 1996/JULIAN DATE 6120), MAY EXPERIENCE SOME DELAYED ENGAGEMENT WHEN VEHICLE IS NOT USED FOR MORE THAN 48 HOURS.

CAUSE:

TORQUE CONVERTER FLUID LEVEL LOW DUE TO FLUID DRAIN DOWN.

CORRECTION: (FIGURE 3) REPLACE PUMP COVER ASSEMBLY WITH THE NEW TCC SIGNAL VALVE ASSEMBLY.

SERVICE PARTS INFORMATION

NEW PART TRANSMISSION NUMBER DESCRIPTION MODELS -------- ----------- ------------ 24209049 PACKAGE-COVER ASSEMBLY, PUMP ALL 1995-96 MODELS EXCEPT THOSE LISTED BELOW.

24209050 PACKAGE-COVER ASSEMBLY, PUMP 5BWD,5FFD,5YDD,6CCD,6CFD, 6KBD,6CHD,6CJD,6KCD,6BWD, 6FFD,6YDD,6WBD,6WHD

PARTS ARE EXPECTED TO BE AVAILABLE ON JULY 1, 1996 FROM GMSPO.

WARRANTY INFORMATION FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR CODE: K7121 REPLACE PUMP COVER ASSEMBLY USE PUBLISHED LABOR OPERATION TIME.

FIGURES: 3 ATTACHMENTS: 0

FIGURE 1. - HYDRA-MATIC 4L60-E TRANSMISSION IDENTIFICATION INFORMATION FIGURE 2. - HYDRA-MATIC 4L60-E TRANSMISSION IDENTIFICATION INFORMATION FOR TWO-PIECE CASE FIGURE 3. - TORQUE CONVERTER CLUTCH SIGNAL VALVE ASSEMBLY LOCATION

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 1996. GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.