Check Engine Light Due to Gas Cap Issue on Hummer H2

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

RepairPal Verified
Average mileage: (–)
1 model year affected: 2009
1 person reported this problem
0 people shared problem details
Related Items:
One or both secondary air injection check valves may become restricted causing poor air flow re...
Check engine light came on after truck misfired and stalled after fueling.
gas gage goes pass full line and abs light comes on and air comes out of my air suspension
I had the front driver side hub assembly replaced recently and since then my ABS, Brake, and Tr...

Related Content