2010 Hummer H3 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2010 Hummer H3
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2010 Hummer H3 ProblemsService transmission every 30,000 miles
A Loose or worn gas cap may cause Check Engine Light to illuminate.
GM recommends replacing the engine coolant at 100,000 miles; however, our technicians tell us that the coolant may become contaminated and require a complete cooling system flush every 60,000 to 70,000 miles.
2010 Hummer H3 QuestionsHummer H3 only getting 6-7mpg? What could be causing this? (1 answer)
I just purchased this vehicle. Can you share what could be causing it to only be averaging 6-7 mpg?
2010 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.