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Hummer H3 Engine Problems

235 TrueDelta members own (or used to own) a 2000 or newer Hummer H3. 44 of these members (18.7%) have reported engine repairs for their car. A total of 59 engine repairs to Hummer H3s--an average of 0.3 per vehicle--have been reported.

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently Hummer H3 problems occur, check out our car reliability stats.

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Chart based on 209 repairs.

Hummer H3 engine repair cost distribution

Chart based on 25 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Non-members can see only ten Hummer H3 repair histories. Log in or join us to see them all.

2006 Hummer H3 4dr SUV

220-horsepower 3.5L I5 4-speed automatic AWD w/low range

50000 mi   Traction control can be turned on and off on vehicle. Traction control was not able to be turned off. PBM computer module defective. 
17980   engine shuttered on initial start-up each morning. Dealer reflash of ECM. Shutter now gone 
35340   Check engine light on, due to emission evaporation, vent sensor malfunction. 

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2006 Hummer H3 4-door

5-cylinder automatic 4WD

7000 mi   Needs new head in cylinder one 
9000   Needs new head in cylinder one. Repair period started in May and finished over a week later in June. 

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2006 Hummer H3 4-door

4-cylinder automatic AWD

3000 mi   Vehicle stability failure. Please service message came on and I was unable to switch from 4wd drive. These buttons did not work. Mechanic said it was the encoder motor. 

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2006 Hummer H3 2-door

Engine not specified

21000 mi   Bad cylinder head. Ordered replacement. 

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