ELEVATED OIL PRESSURE GAGE READING (REPL. OIL FILTER BOLT. Pontiac Firebird 1993

REVISION: 05/31/94

THIS BULLETIN IS BEING REVISED TO ADD INFORMATION TO THE CORRECTION SECTION. ----------------------------------------------------------------------

SUBJECT: ELEVATED OIL PRESSURE GAGE READING DUE TO POOR GROUND FOR OIL PRESSURE SENSOR (REPLACE OIL FILTER ADAPTER BOLT)

MODELS: 1993 CHEVROLET CAMARO 1993 PONTIAC FIREBIRD EQUIPPED WITH 3.4L PUSHROD V6 ENGINE (VIN S - RPO L32)

CONDITION:

SOME OWNERS MAY COMMENT ON AN ELEVATED OIL PRESSURE GAGE READING. TYPICALLY, THE GAGE READING IS PEGGED AT 80 PSI.

CAUSE:

THE OIL PRESSURE SENSOR SENDS AN ELECTRICAL SIGNAL TO THE OIL PRESSURE GAGE. THE OIL PRESSURE SENSOR IS LOCATED IN THE OIL FILTER ADAPTER AND RELIES ON THE OIL FILTER ADAPTER BOLT TO PROVIDE A GROUND PATH TO THE ENGINE BLOCK. DUE TO THE COATING USED ON THE OIL FILTER ADAPTER BOLT, GROUND INTEGRITY MAY NOT ALWAYS BE MAINTAINED.

CORRECTION:

FOLLOW THE DIAGNOSTICS AS OUTLINED IN SECTION 8A OF THE SERVICE MANUAL. REMEMBER, LOSS OF THE MECHANICAL GROUND FOR THE OIL PRESSURE SENSOR WILL CAUSE THE OIL PRESSURE GAGE TO READ HIGH. REPLACE THE OIL FILTER ADAPTER BOLT WITH A NEW BOLT, PART NUMBER 12537215, OIL FILTER ADAPTER BOLT SEAL, PART NUMBER 14033233, AND THE OIL FILTER ADAPTER GASKET, PART NUMBER 12337894. FOLLOWING THE SERVICE PROCEDURE OUTLINED IN THE SERVICE MANUAL, TORQUE THE ADAPTER BOLT TO 68 N.M (50 LBS. FT.). BE SURE TO INSPECT FOR OIL LEAKS AFTER THE REPAIR IS COMPLETE.

PARTS INFORMATION:

DESCRIPTION PART NUMBER QUANTITY ----------- ----------- -------- BOLT, OIL FILTER ADAPTER 12537215 1 SEAL, OIL FILTER ADAPTER BOLT 14033233 1 GASKET, OIL FILTER ADAPTER 12337894 1

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

LABOR OPERATION: J0960 - ADAPTER AND/OR GASKET, OIL FILTER-REPLACE USE PUBLISHED LABOR OPERATION TIMES.

FIGURES: 0

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