2008 Hummer H3 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2008 Hummer H3

2008 Hummer H3 Problems

A Loose or worn gas cap may cause Check Engine Light to illuminate.

The engine may develop a misfire due to worn valve seats. This fault will cause the Check Engine Light to illuminate. Replacement of the cylinder head may be required to correct this concern.

The fuel level sensor in the fuel tank may fail causing erratic fuel gauge operation. Our technicians tell us that on high mileage vehicles you may wish to replace the complete fuel pump module assembly if this condition occurs.

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2008 Hummer H3 Questions

Thermostat shows high level more than half in just 10 mins drive . There is no leakage at all in coolant and no issues anywhere found by garage team . but no once can explain why is this showing high . Cant feel comfy driving loing distance in a fear of vehicle getting over heated . New transmiss...

And hearing a tinkering sound under vehicle when I cut it off .

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2008 Hummer H3 Recalls

The retaining clips on the non-functional hood louver could brake. The louver could become loose and/or separate from the vehicle. If this were to happen while the vehicle is in motion, personal injury or property damage could result. Dealers will apply adhesive to the underside of the hood louver to secure it. The recall is scheduled to begin on April 12, 2010. The General Motors recall number is 10088.

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2008 Hummer H3 Reviews

Would buy another in a second...great vehicle.....Gets about 17MPG overall with standard driving with V8

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