DELAYED OR NO. 2-3 UPSHIFTS HOT (REP. TRANSAXLE PLATE)

SUBJECT: DELAYED OR NO 2-3 UPSHIFTS HOT (REPLACE TRANSAXLE SPACER PLATE)

MODELS: 1995 BUICK CENTURY 1995 OLDSMOBILE CUTLASS CIERA WITH 2.2L ENGINE (VIN 4 - RPO LN2)

TRANSAXLE APPLICATIONS: HYDRA-MATIC 3T40 (RPO MD9)

TRANSAXLE MODELS: 5SWC MODELS BUILT BEFORE AUGUST 24, 1994 (JULIAN DATE 236)

CONDITION:

SOME OWNERS MAY EXPERIENCE A DELAYED OR NO 2-3 UPSHIFT DURING THE FOLLOWING DRIVING CONDITIONS:

- FULLY RELEASING ACCELERATOR PEDAL AFTER A WIDE OPEN THROTTLE (WOT) 1-2 UPSHIFT.

- FULLY RELEASING ACCELERATOR PEDAL AFTER A 3-2 DETENT DOWNSHIFT.

- FULLY RELEASING ACCELERATOR PEDAL AND THEN MANUALLY SHIFTING FROM "DRIVE" TO "SECOND" AND THEN BACK TO "DRIVE" ABOVE 35 MPH.

THIS CONDITION MAY BECOME NOTICEABLE AFTER THE TRANSAXLE REACHES OPERATING TEMPERATURE.

CAUSE: (FIGURES 1 AND 2)

THIS CONDITION MAY BE DUE TO THE CONTROL VALVE BODY SPACER PLATE. 5SWC MODELS BUILT BEFORE AUGUST 24, 1994 (JULIAN DATE 236) HAD AN UNDERSIZED ORIFICE. THE SPACER PLATE CAN BE IDENTIFIED BY THE PART NUMBER STAMPED ON THE PART.

CORRECTION:

TO REPAIR THIS CONDITION, THE SPACER PLATE MUST BE REPLACED. FOLLOW THE STEPS LISTED UNDER "SERVICE INFORMATION."

SERVICE INFORMATION: (FIGURES 1 AND 2)

1) ROAD TEST THE VEHICLE. VERIFY THAT THE VEHICLE HAS A DELAYED 2-3 UPSHIFT AS LISTED UNDER "CONDITION."

2) VERIFY THE FOLLOWING TRANSAXLE IDENTIFICATION INFORMATION: - THE MODEL IS A 5SWC - THE JULIAN DATE IS LESS THAN 236 AND THE CALENDAR YEAR IS 4

3) REPLACE THE ORIGINAL SPACER PLATE (P/N 24201520) WITH THE REVISED SPACER PLATE (P/N 24203356). IT WILL ALSO BE NECESSARY TO REPLACE THE VALVE BODY COVER GASKET AND THE SPACER PLATE GASKETS.

SERVICE PARTS INFORMATION:

+---------------------------------------------+ | PART | | | NUMBER | DESCRIPTION | |----------+----------------------------------| | 24203356 | SPACER, VALVE BODY TO CASE COVER | |----------+----------------------------------| | 8678169 | GASKET, VALVE BODY COVER | |----------+----------------------------------| | 8652506 | GASKET, SPACER PLATE | +---------------------------------------------+

PARTS ARE EXPECTED TO BE AVAILABLE ON OCTOBER 3, 1994.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION: K6570 USE PUBLISHED LABOR OPERATION TIME.

FIGURES: 2 ATTACHMENTS: 0

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER." THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS OCCURRING 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 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.