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Hummer H3 problems

Hummer H3

Model Year Comparison

Worst Model Year
2006
Worst Complaint
leaking valves

Here is the model year comparison for the Hummer H3.

The 2006 Hummer H3 has the most overall complaints, & the most-reported problem is also with the 2006 H3 for leaking valves.

Click on the graph bars for more details about a specific model year.

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Worst Reported Problems with the H3

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