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 failure4
- engine failure2
- cylinder problem1
- low compression1
- NHTSA: Engine31
- NHTSA: Engine And Engine Cooling26
- NHTSA: Engine And Engine Cooling: Engine6
- NHTSA: Vehicle Speed Control5
- NHTSA: Vehicle Speed Control: Cruise Control1
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Compare Hummer H3 Model Years
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Check out our Hummer H3 overview to see the most problematic years, worst problems and most recently reported complaints with the H3.