2007 Hummer H2 Problems
RepairPal has identified the most common problems with the 2007 Hummer H2 based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
A Loose or worn gas cap may cause Check Engine Light to illuminate.
The 2004-2009 Hummer H2 is known to have issues with the EVAP system, a part of your emission control system.
To correct the issue, the EVAP canister vent valve, solenoid, and wiring must be inspected. The most common fix is replacement of the wiring connector or replacement of the vent valve assembly.