2008 Hummer H3 Repair and Maintenance

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

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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engine lightbgoes on for a day then off for a month, car isn't making any loud noises, not sure where tomget checked?

While driving my hummer will neutral down & the only way to fix is to put it into four wheel drive. No codes appear Please help thank you

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

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