2008 Hummer H2 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2008 Hummer H2

2008 Hummer H2 Problems

Check Engine Light Due to Gas Cap Issue

A Loose or worn gas cap may cause Check Engine Light to illuminate.

Contamination of extended life coolant

Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.

Flush brake fluid every 60,000 miles

Our technicians recommend flushing the brake fluid every 60,000 miles.  Brake fluid that is dirty may cause problems in the brake system.

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2008 Hummer H2 Questions

unusual noise on the under chassis of my 2008 hummer h2 what should i need to do (1 answer)

unusual noise on the under chassis of my 2008 hummer h2 what shiuld i need to do almost replaced all the rubber on my under chassis but stil the noise is still there when use my turn left or right and when i press the accelarator please i need your help thanks

air ride system rides at max height, can't get it to normal range. pushed button (1 answer)

pushed button, it just blinks does not change anything.

Why does battery dies when truck sits for a couple of days? (2 answers)

When I hook up charger there is a faint buzzing sound coming from a small canister near the fuse box. It will buzz for a few seconds then stops.

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2008 Hummer H2 Recalls

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.

Possible Under Hood Electrical Fire

The wiring to the washer system heater may overheat due to a failure in the heater module. This could cause other electrical features to malfunction, smoke to develop, and an electrical fire could result. Dealers will install a wire harness with an inline fuse to protect the washer heater module. This recall is expected to begin on September 12, 2008. The General Motors recall number is 08048.

Anti-Lock Braking System Wiring May Be Reversed

On some trucks, wiring for the ABS wheel speed sensors may be reversed, which could cause increased stopping distance. This condition could increase the risk of a crash. Dealers will correct the ABS wheel speed sensor wiring and reprogram the brake control module if necessary.

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2008 Hummer H2 Reviews

Purchased in Jan.2010 to be used as everyday driver and 25' boat hauler. Have not regretted trading in a perfectly good 2007 Acura MDX for it. I have added the nominal performance upgrades (exhaust, intake, chip) which certainly boosted power but no increase over stock mpg. 13mpg at best on highway. The 2008 + up model is the way to go for this brand - many improvements over 2007 and earlie...

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