Hummer 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 Hummer 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
H2 6.0L2003-07VIN position 8 =UGM
H2 6.2L2008-09VIN position 8 =8GM
H3 3.5L2006-07VIN position 8 =6GM
H3 3.7L2007-09VIN position 8 =EGM
H3 5.3L2008-09VIN position 8 =LGM
H3T 3.7L2009VIN position 8 =EGM
H3T 5.3L2009VIN position 8 =LGM
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