UNDETECTABLE LOSS OF ENGINE COOLANT (REPL. SURGE TANK CAP). Buick Skylark 1994

SUBJECT: UNDETECTABLE CAUSE OF LOSS OF ENGINE COOLANT (REPLACE SURGE TANK CAP)

MODELS: 1992-94 CHEVROLET CORSICA AND BERETTA 1992-94 BUICK SKYLARK 1992-94 OLDSMOBILE ACHIEVA 1992-94 PONTIAC GRAND AM

CONDITION:

SOME OWNERS MAY COMMENT ABOUT LOSS OF ENGINE COOLANT.

CAUSE:

IN SOME INSTANCES, THE ENGINE COOLANT SURGE TANK CAP MAY ALLOW ENGINE COOLANT TO EVAPORATE OUT PAST THE SEAL.

CORRECTION:

FOLLOW COOLING SYSTEM DIAGNOSIS AS OUTLINED IN SECTION 6B OF THE SERVICE MANUAL. IF NO OTHER SYSTEM LEAKS ARE LOCATED, REPLACE CURRENT SURGE TANK CAP WITH NEW CAP, P/N 10244485. FOLLOW PROCEDURES OUTLINED IN SECTION 6B IN THE APPROPRIATE SERVICE MANUAL.

NOTE: THIS IS A PRESSURIZED CAP. BE SURE TO NOTE CAUTION ADVISORY IN SERVICE MANUAL.

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: J3020 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.