2006 Hummer H3
Worst 2006 H3 engine Problems
Click on a problem below to read more.
- leaking valves6
- engine light on5
- engine runs roughly5
- cylinder head failure3
- engine failure2
- cylinder problem1
- low compression1
- NHTSA: Engine And Engine Cooling24
- NHTSA: Engine23
- NHTSA: Engine And Engine Cooling: Engine6
- NHTSA: Vehicle Speed Control5
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