STARTER MOTOR CRANKS IMMED. AFTER KEY ON WHEN PCM. Buick Regal 1997

SUBJECT: STARTER MOTOR CRANKS IMMEDIATELY AFTER KEY ON WHEN PCM IS REPLACED (USE UPDATED PCM CALIBRATION)

MODELS: 1997 BUICK CENTURY AND REGAL WITH 3.1L, 3.8L ENGINE (VINS M, K, 1- RPOS L82, L36, L67)

CONDITION:

STARTER MOTOR BEGINS CRANKING IMMEDIATELY AFTER KEY ON WHEN TECHNICIAN REPLACES PCM (POWERTRAIN CONTROL MODULE).

CAUSE:

INTERNAL TO SOME SERVICE PCMS.

CORRECTION:

TO AVOID THE CONDITION USE ONLY THE UPDATED SERVICE PCM AS LISTED IN THE PARTS SECTION OF THIS BULLETIN. PROGRAM THE SERVICE PCM WITH CALIBRATION OBTAINED FROM THE MOST CURRENT CD FROM GM SERVICE TECHNOLOGY GROUP (STG).

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

PARTS INFORMATION VEHICLE ENGINE CODE UPDATED SERVICE PCM 1997 BUICK CENTURY M 16268178 1997 BUICK REGAL K 16268178 1997 BUICK REGAL 1 16268183

WARRANTY INFORMATION FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION DESCRIPTION TIME ============================================================= J6360 CONTROLLER, PCM/VCM USE PUBLISHED - REPLACE + REPROGRAM LABOR TIME

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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.