Hummer Repair and Maintenance

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

Select your Hummer's model to get more detailed information:

Hummer Problems

Worn Valve Seats May Cause Engine Misfire

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.

Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

Service transmission every 30,000 miles
Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order.

See More Problems (28)

Hummer Questions

My power steering pump broke and I also stood without brakes. (1 answer)

I have to replace the power steering I know that. But the brake pads are new. The car is maintained to the tea. Oil changed. Everything! ! what can I do?

Keys are out ignition and door is opened it dings constantly? Why? (1 answer)

To get out and the call is ring constantly and then stops after I close door? Why is this? Is a light out some where in hummet?

how to do I remove the dashboard, and re-ground the A/c blower and control modul (1 answer)

what does the ground look like.

See More Questions (404)

Hummer Recalls

Heater 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.

Possible Under Hood Electrical Fire

The heated washer module under the hood could overheat due to excessive current draw. Under certain conditions, this could result in an under hood fire. This previous recall attempt in 2008 to repair this concern did not have the expected success. Dealers will now permanently disable and remove the heated washer module to correct this concern. This recall is expected to begin on June 20, 2010.

The Hood Louver Could Detach from the Vehicle

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.

See More Recalls (15)

Hummer Reviews

My visor was taken down in my 2007 H2 Hummer and will not stay up now. It seems to clip in, but when turned it will not stay latched. I have researched the diagram from this particular year and the years after and the design changed in 2008. The newer designs use screws to secure the visor (which makes much more sense to me). This leads me to believe that the design itself is flawed. Especiall...
Three years since my last update, and still an AWESOME MACHINE. the MACHINE IS ALMOST NINE YEARS OLD and kicking ass...
heater on driver side seat come on

See More Reviews (17)