FUEL GAUGE REMAINS ON 'FULL' TOO LONG (FLASH WITH UPDATED. Buick LeSabre 1997

SUBJECT: FUEL GAUGE REMAINS ON "FULL" TOO LONG (FLASH WITH UPDATED POWERTRAIN CONTROL MODULE (PCM) CALIBRATION)

MODELS: 1997 BUICK LESABRE 1997 OLDSMOBILE EIGHTY EIGHT 1997 PONTIAC BONNEVILLE WITH 3.8L ENGINE (VIN K - RPO L36)

CONDITION:

SOME OWNERS MAY COMMENT THAT THE FUEL GAUGE REMAINS ON "FULL" TOO LONG. THE VEHICLE MAY BE DRIVEN APPROXIMATELY 100 MILES BEFORE MOVEMENT BEGINS.

CAUSE:

UPDATE FUEL SENDER INFORMATION CALCULATION MAY BE TOO SLOW.

CORRECTION:

FLASH WITH UPDATED POWERTRAIN CONTROL MODULE (PCM) CALIBRATION.

IMPORTANT:

DO NOT ATTEMPT TO ORDER THE CALIBRATIONS FROM GMSPO. THE CALIBRATIONS ARE PROGRAMMED INTO THE VEHICLE'S PCM VIA A TECHLINE TOOL DEVICE.

USING THE TABLE BELOW, DETERMINE THE CALIBRATION P/N NEEDED FOR YOUR VEHICLE APPLICATION. ENTER THE SERVICE PROGRAMMING SYSTEM (SPS) ON THE TECHLINE TERMINAL. THE MOST UP TO DATE CALIBRATION P/N SHOULD BE IN THE SYSTEM. CONTINUE WITH THE PROGRAMMING PROCESS BY SELECTING PROGRAM.

CALIBRATION AXLE NUMBER RATIO EMISSIONS TIRE APPLICATION ----------- ----- --------- ---- -----------

16259014 2.84 USA/FEDERAL P205/P215 BUICK LESABRE + WA2 OLDS. EIGHTY EIGHT PONT. BONNEVILLE

16259324 2.84 CALIFORNIA P205/P215 BUICK LESABRE + WA2 OLDS. EIGHTY EIGHT PONT. BONNEVILLE

16259334 2.84 UNLEADED P205/P215 BUICK LESABRE EXPORT/ OLDS. EIGHTY EIGHT CANADA PONT. BONNEVILLE + WA2

16259344 2.84 USA/FEDERAL P225 OLDS. EIGHTY EIGHT

16259354 2.84 CALIFORNIA P225 OLDS. EIGHTY EIGHT

16259364 2.84 UNLEADED P225 OLDS. EIGHTY EIGHT EXPORT/ CANADA

16259374 3.06 USA/FEDERAL BUICK LESABRE OLDS. EIGHTY EIGHT PONT. BONNEVILLE

16259384 3.06 CALIFORNIA BUICK LESABRE OLDS. EIGHTY EIGHT PONT. BONNEVILLE

16259394 3.06 UNLEADED BUICK LESABRE EXPORT/ OLDS. EIGHTY EIGHT CANADA PONT. BONNEVILLE

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION LABOR OPERATION NUMBER DESCRIPTION TIME --------------- ----------- ---------------

J6355 ON CAR PROM REPROGRAMMING USE PUBLISHED LABOR FLASH E-PROM OPERATION TIME

FIGURES: 00 ATTACHMENTS: 00

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.