GMC 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 GMC 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
Acadia 3.6L2008-09VIN position 8 =7NGM
Canyon 2.8/3.5L2004-06VIN position 8 =6/8GM
Canyon 2.9/3.6/3.7/5.3L2007-09VIN position 8 =9/E/LGM
Envoy 4.2/5.3L2002-09VIN position 8 =S/MGM
Envoy 4.3/5.3L1999-08VIN position 8 =PIWGM
G-Series 4.3L1992-95VIN position 8 =ZGM
G-Series 5.0L1992-95VIN position 8 =HGM
G-Series 5.7L1992-95VIN position 8 =KGM
G-Series 5.7L1996VIN position 8 =KGM
G-Series 6.5L1994-95VIN position 8 =PlYGM
G-Series 6.5L1996VIN position 8 =YGM
G-Series 7.4L1992-95VIN position 8 =NGM
G-Series 7.4L1996VIN position 8 =NGM
Jimmy 4.3L1996-01VIN position 8 =WGM
Jimmy 4.3L -with vehicle control module (VCM)1995VIN position 8 =W/ZGM
Jimmy 4.3L -without vehicle control module (VCM)1992-95VIN position 8 =W/ZGM
Savana 4.3L1996-0SVIN position 8 =XGM
Savana 4.8L2003-09VIN position 8 =VGM
Savana 5.0L1996-02VIN position 8 =MGM
Savana 5.3L2003-09VIN position 8 =TGM
Savana 5.7L1996-02VIN position 8 =RGM
Savana 6.0L2003-09VIN position 8 =UGM
Savana 6.5L1996-02VIN position 8 =F/SGM
Savana 6.6L2006-09VIN position 8 =21WGM
Savana 7.4L1996-02VIN position 8 =JGM
Savana 8.1L2001-02VIN position 8 =GGM
Sierra C/K Pickup 4.3L1992-95VIN position 8 =ZGM
Sierra C/K Pickup 5.0L1992-95VIN position 8 =HGM
Sierra C/K Pickup 5.7L1992-95VIN position 8 =KGM
Sierra C/K Pickup 5.7L1996-00VIN position 8 =RGM
Sierra C/K Pickup 6.5L1994-95VIN position 8 =F/P/SGM
Sierra C/K Pickup 6.5L Turbo Diesel1996-00VIN position 8 =F/SGM
Sierra C/K Pickup 6.6L Turbo Diesel2001-09VIN position 8 =1GM
Sierra C/K Pickup 7.4L1992-95VIN position 8 =NGM
Sierra C/K Pickup 7.4L1996-00VIN position 8 =JGM
Sierra/Denali/C/K Pickup 4.3L1996-09VIN position 8 =W/XGM
Sierra/Denali/C/K Pickup 4.8L1999-09VIN position 8 =CNGM
Sierra/Denali/C/K Pickup 5.0L1996-00VIN position 8 =MGM
Sierra/Denali/C/K Pickup 5.3L1999-09VIN position 8 =3/BrTlYGM
Sierra/Denali/C/K Pickup 6.0L1999-09VIN position 8 =S/N/UIYGM
Sierra/Denali/C/K Pickup 6.2L2008-09VIN position 8 =8GM
Sierra/Denali/C/K Pickup 8.1 L2001-07VIN position 8 =GGM
Sonoma 2.2L1994-95VIN position 8 =4GM
Sonoma 2.2L1996-03VIN position 8 =4GM
Sonoma 2.5L1992-93VIN position 8 =AGM
Sonoma 2.8L1992-93VIN position 8 =RGM
Sonoma 4.3L -without vehicle control module (VCM)1992-95VIN position 8 =W/ZGM
Sonoma 4.3L -with vehicle control module (VCM)1995VIN position 8 =W/ZGM
Sonoma 4.3L1996-04VIN position 8 =W/XGM
Suburban 5.7L1992-95VIN position 8 =KGM
Suburban 5.7L1996-99VIN position 8 =RGM
Suburban 6.5L1994-95VIN position 8 =FGM
Suburban 6.5L Diesel1996-99VIN position 8 =FGM
Suburban 7.4L1992-95VIN position 8 =NGM
Suburban 7.4L1996-99VIN position 8 =JGM
Yukon 4.8L2000-09VIN position 8 =CNGM
Yukon 5.7L1992-95VIN position 8 =KGM
Yukon 5.7L1996-00VIN position 8 =RGM
Yukon 6.5L1994-95VIN position 8 =SGM
Yukon 6.5L Turbo Diesel1996-99VIN position 8 =SGM
Yukon/Denali 5.3L2001-09VIN position 8 =O/3/CrTGM
Yukon/Denali 6.0/6.2L2000-09VIN position 8 =2/S/8/N/UIYGM
YukonlDenali 8.1 L2001-07VIN position 8 =GGM
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