A Loose or worn gas cap may cause Check Engine Light to illuminate.
Resources for the Repair and Maintenance of your 2008 Hummer H3
2008 Hummer H3
2008 Hummer H3 Problems
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.
Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order.
Brake fluid can become dirty and may cause problems in the brake system; it should be flushed every 60,000 miles.
2008 Hummer H3 Recalls (Recent)
RepairPal Expert Overview:
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.
2008 Hummer H3 Questions and Answers
My check engine light is on. I had it checked and was told the code came up as "misfire". The light came back on the next day. When the engine is cold and I first start the truck, it a...
I have a transmission slippage issue that I believe has lead to a second engine failure (First for excessive oil consumption at around 80,000 Kilometers vehicle mileage) I experienced a random inte...
I dont know how to explain it but it feels like fuel stops when you press on the gas pedal.
The heater stopped working. It was working and then after it was parked and off for a while, when started back up never came back on. None of the heating or air controls are working. The fan is not...