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Hummer H3 Engine Problems and Repair Histories

Don't infer Hummer H3 problem frequency from what you see on this page. Many lucky owners have had no repairs, and their cars are not shown.

Percentage of Hummer H3 repairs by problem area

29% of the Hummer H3 repairs were to the engine, 14% to the transmission, 11% to the brakes, 8% to the suspension, 23% to the electrical or air-conditioning systems, 12% to the body and trim, and 4% to other areas of the vehicle.

Chart based on 177 repairs.

Hummer H3 engine repair cost distribution

Of the Hummer H3 engine repairs that were not covered by warranty and were not do-it-yourself repairs, 13% cost less than $100, 50% between $100 and $499, 13% between $500 and $999, 4% between $1000 and $2499, and 21% more than $2500.

Chart based on 24 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 Engine problems and repair histories. Log in or join us to see them all.
Repair costs are in local units.

2006 Hummer H3 4dr SUV

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

Hummer H3 in Michigan, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Dec 2005 4000    
50000 0 Traction control can be turned on and off on vehicle. Traction control was not able to be turned off. PBM computer module defective. 
 
Hummer H3 in British Columbia, Canada
Date Odometer
(in miles)
Cost Problem/Repair Description
Jan 2007 8680    
17980 0 engine shuttered on initial start-up each morning. Dealer reflash of ECM. Shutter now gone 
35340 0 Check engine light on, due to emission evaporation, vent sensor malfunction. 
 

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2006 Hummer H3 4-door

5-cylinder automatic 4WD

Hummer in Montana, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Sep 2006 1000    
7000 0 Needs new head in cylinder one 
9000 0 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

Hummer in New Jersey, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Oct 2006 2000    
3000 0 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

Hummer H3 in Connecticut, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Nov 2007 20000    
21000 0 Bad cylinder head. Ordered replacement. 
 

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