SMU-SECTION 6E-ENGINE CONTROLS REV. DTC P0441 EVAP. Buick Park Avenue 1997

SUBJECT: SERVICE MANUAL UPDATE - SECTION 6E - ENGINE CONTROLS REVISED DTC P0441 EVAP SYSTEM NO FLOW DURING PURGE, DTC P1654 A/C RELAY CONTROL CIRCUIT AND PCM CONTROLLED AIR CONDITIONING

MODELS: 1997 BUICK PARK AVENUE WITH 3.8L ENGINE (VINS K, 1 - RPOS L36, L67)

THIS BULLETIN IS BEING ISSUED TO INFORM TECHNICIANS OF A REVISION TO THE P0441 EVAP SYSTEM NO FLOW DURING PURGE. THE DTC TABLE WAS REVISED. ALSO THE GRAPHIC IN THE DTC P1654 A/C RELAY CONTROL CIRCUIT AND THE PCM CONTROLLED AIR CONDITIONING DIAGNOSIS NEEDS TO BE REPLACED WITH THE REVISED GRAPHIC.

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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.