Buick OBD/OBD2 Codes

For OBD information for all GM vehicles please see our GM OBD / OBD2 page.

If you cannot find your model below and it is newer than 1996, please refer to our list of all Buick OBD2 codes.  NOTE: A model specific code list like those below will be the most accurate source for manufacturer specific OBD / OBD2 codes of your vehicle.

ModelYearEngine identificationSystem
Century 2.2L1996VIN Position 8=4GM
Century 3.1L1994-05VIN Position 8=M/JGM
Enclave 3.6L2008-09VIN Position 8=7/VGM
LaCrosse 3.6L2005-09VIN Position 8=7GM
LaCrosse 3.8L2005-09VIN Position 8=2/4GM
LaCrosse 5.3L2008-09VIN Position 8=CGM
LeSabre 3.8L1994-05VIN Position 8=L/KGM
Lucerne 3.8L2006-08VIN Position 8=1/KGM
Lucerne 3.9L2009VIN Position 8=1/MGM
Lucerne 4.6L2006-09VIN Position 8=9/YGM
Park Avenue 3.8L1994-05VIN Position 8=L/K/1GM
Rainier 4.2L2004-07VIN Position 8=SGM
Rainier 5.3L2004-07VIN Position 8=M/PGM
Regal 3.1L1996-97VIN Position 8=MGM
Regal 3.8L1994-04VIN Position 8=L/K/1GM
Rendezvous 3.4L2002-05VIN Position 8=EGM
Rendezvous 3.5L2006-07VIN Position 8=8GM
Rendezvous 3.6L2004-06VIN Position 8=7GM
Riviera 3.8L1995-99VIN Position 8=K/1GM
Roadmaster 5.7L1996VIN Position 8=PGM
Skylark 2.4L1996-98VIN Position 8=TGM
Skylark 3.1L1996-98VIN Position 8=MGM
Terraza 3.5L2005-07VIN Position 8=8/LGM
Terraza 3.9L2006-07VIN Position 8=1GM
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