2007 Hummer H2 Q&A

2007 Hummer H2 Question: Check Engine Light

Check engine light came on after truck misfired and stalled after fueling. -
Answer 1
First thing to do is retrieve the trouble code(s) stored in the vehicle's computer. -
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Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
...tion check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves even if a fault code is set for only one...
A Loose or worn gas cap may cause Check Engine Light to illuminate.
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.