Hummer H3 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Hummer H3
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Hummer H3 ProblemsWorn Valve Seats May Cause Engine Misfire
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.
A Loose or worn gas cap may cause Check Engine Light to illuminate.
Hummer H3 QuestionsHas leaking from top of tank, suspect tube from pump, but all diagrams I see show the "T" fitting I think is cracked is part of gas tank, confused because diagram shows tube attached to removable fuel pump system. (1 answer)
was using the sunroof when car was not starting got caught on something and opened back up then it seem to die as if battery was dead but will not turn over or release the key
Hummer H3 RecallsHeater And Air Conditioning Fan Speed Control Overheats
The connector module that controls the blower motor speed for the heating, ventilation and air conditioning system may overheat, causing a fire hazard. Dealers will replace part of the blower motor connector and harness free of charge to resolve the concern.
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.
The front fuel tank support strap may fracture. It it does, the fuel tank would only supported by the rear support strap and the stone shield. Continued driving would eventually fracture the rear support strap and shield fasteners. The fuel tank separating from the vehicle could increase the risk of a crash. Dealers will install an updated fuel tank support strap. The recall began April 10, 2009. The General Motors recall number is 09048.