JAPAN/EXPORT ONLY - STALL/ UNSTABLE IDLE DURING COASTDOWN

SUBJECT: STALL OR UNSTABLE IDLE DURING COASTDOWN OR AT STOP FROM HIGHWAY SPEEDS (REPLACE MEMCAL/EPROM)

MODELS: 1992-93 PONTIAC GRAND AM WITH 2.3L ENGINE (VIN D - RPO LD2) AND AUTOMATIC TRANSAXLE **FOR JAPANESE EXPORT ONLY**

CONDITION:

SOME VEHICLES MAY EXHIBIT A STALL OR UNSTABLE IDLE DURING COASTDOWN OR AT A STOP AFTER HIGHWAY DRIVING.

CAUSE:

SOFTWARE CALIBRATION.

CORRECTION:

IF NO CAUSE IS FOUND FOR THE STALLING OR UNSTABLE IDLE AFTER FOLLOWING CURRENTLY PUBLISHED DIAGNOSTICS, REPLACE THE MEMCAL/EPROM USING THE PART NUMBERS LISTED BELOW. THE SOFTWARE CALIBRATION HAS BEEN OPTIMIZED FOR CONDITIONS IN JAPAN.

SERVICE INFORMATION:

PERFORM DIAGNOSTICS AS OUTLINED IN SECTION 6E OF THE SERVICE MANUAL. MAKE ANY ADJUSTMENTS THAT ARE REQUIRED, OR REPLACE ANY INOPERATIVE PARTS.

IF NO CAUSE IS FOUND FOR THE STALLING OR UNSTABLE IDLE AFTER FOLLOWING CURRENTLY PUBLISHED DIAGNOSTICS, REPLACE THE MEMCAL/EPROM USING THE PART NUMBERS LISTED BELOW.

REFER TO THE APPLICABLE SERVICE MANUAL FOR THE MEMCAL/EPROM REPLACEMENT PROCEDURE.

PARTS INFORMATION:

SCAN I.D. PART NO. DESCRIPTION (BROADCAST CODE) -------- ----------- ---------------- 16201232 1992 SERVICE MEMCAL 1213 (BKJT)

16201228 1993 SERVICE EPROM (MEMCAL) 1203 (BKJS)

PARTS ARE EXPECTED TO BE AVAILABLE FROM GMSPO ON FEBRUARY 28, 1994.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY USE: LABOR OPERATION: J6364 USE PUBLISHED LABOR OPERATION TIME.

FIGURES: 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 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.