2010 Hummer H3 Problems
RepairPal has identified the most common problems with the 2010 Hummer H3 based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
A Loose or worn gas cap may cause Check Engine Light to illuminate.
Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order.
The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.