2006 Hummer H3
Worst 2006 H3 engine Problems
Click on a problem below to read more.
- engine runs roughly5
- leaking valves5
- engine light on3
- cylinder head failure2
- engine failure1
- low compression1
- tailpipe stays smutty1
- NHTSA: Engine And Engine Cooling22
- NHTSA: Engine12
- NHTSA: Engine And Engine Cooling: Engine6
- NHTSA: Vehicle Speed Control4
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