Hummer H3 Hummer H3

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Hummer H3 repairs by problem area

Engine (34%)

Transmission and Drivetrain (16%)

Brakes and Traction Control (4%)

Suspension and Steering (10%)

Electrical and Air Conditioning (22%)

Paint, Rust, Leaks, Rattles, and Trim (10%)

Other (4%)

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Chart based on 252 repairs.
See TSBs and recalls for the Hummer H3.

Hummer H3 transmission repair cost distribution

$2500+ (5%)

$1000 - $2499 (18%)

$500 - $999 (3%)

$100 - $499 (28%)

< $100 (48%)

Chart based on 40 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2009 Hummer H3 4dr SUV

295-horsepower 5.3L V8 4-speed automatic AWD w/low range

44000 mi

US $2400
trans cooler leaked water into transmission- required new trans cooler and transmission rebuild 

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2008 Hummer H3 4dr SUV

295-horsepower 5.3L V8 4-speed automatic AWD w/low range

93700 mi

US $108
Differential gasket leaking 
166000 mi

US $750
Replaced transmission cooling lines that were leaking 
157500 mi

US $1000
Drivers front axle replaced. Axle wear could not keep seal. 
73700 mi Right front CV boot damaged. Entire axle assembly replaced 
67000 mi Transfer case sensor error. Broken ground wire found in the harness. Harness replaced. 
65000 mi

US $1750
Torn inner and outer cv boots driver side 

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2007 Hummer H3 4dr SUV

242-horsepower 3.7L I5 5-speed manual AWD w/low range

66000 mi

US $180
Rear U joint failed ten days out of five year warranty, had my local shop change both U joints on shaft, one that failed is greasable, non failed is non greasable, same job would have cost $580.00 at local dealer with truck just 10 days oow 
115000 mi

US $170
Leaking boot driver side 
75000 mi

US $5000
transmission went out, limped in 
121000 mi

US $1384
Leaking out of the output transfer case seal, and clutch slip. 
160000 mi

US $75
Replace left FRT axle. 

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2007 Hummer H3 4dr SUV

242-horsepower 3.7L I5 4-speed automatic AWD w/low range

61680 mi

C $350
U joints on drive shaft had to be replaced 
85500 mi

C $200
iner cv boot ripped open replaced cv axle with new. 
88000 mi

US $415
Right/Front Axle Seal Leaking where axle enters differential 
117000 mi

US $500
Rebuild front differential replace ring gear and all bearings and seals 
55000 mi My torque converter went out. Grinding sound while in gear and stopped. 
60000 mi

US $240
Front axle replaced. Boot ripped. 
109000 mi Starting to have transmission issues. 
75300 mi

US $200
All 4 U-Joints went bad 
88020 mi Transfer case chain. 
109740 mi

R 150
Transmission oil pipe chafing against the exhaust manifold, causing oil leak. Pipe replaced. 
115320 mi Torque Convertor circuit open and Input Turbine Speed Sensors (P0716 and P0717 Powertrain codes). 
119660 mi Front Differential gears failure. New Front Differential installed. 

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2007 Hummer H3 4-door

4-cylinder automatic AWD

58000 mi This is 2nd trip since 10/09 when engine blew at 53,000 mi. In Feb engine light came on. Car is still not running well difficult to get return call from GM. 

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2006 Hummer H3

Engine not specified

58000 mi Crack in Transmission cooler, leaking fluid on ground.  

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2006 Hummer H3 4dr SUV

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

103800 mi

US $2300
Replaced transmission 
30000 mi Front drive line cv joint boot came off. Shop replaced entire drive line and steering shaft both in less than 1 hr. 
59000 mi

US $5000
Something replaced but not rebuilt 
9300 mi transfer case failure. Transfer case refused to shift from hi 4 lock back to hi 4 
24180 mi

C $338
Transfer case stuck in 4 HI lock , will not release to 4 Hi unlock. Same problem a year ago. Transfer case re and re ... Rear brakes grinding, transfer case refuses to shift out of hi-lock, horn sounds when driver door opened 
33480 mi Loud clunk from transmission/rearend when going from coasting to power. Transmission appears to do additional shift just prior to stop. 
122300 mi

US $2100
Rebuilt the transmission. 
133000 mi

US $2000
right front axle, 
13000 mi 4x4 failure & stability system failure warning came on, 4x4 system lights on center console were extinguished. Dealer replaced transfer case encoder motor and performed software update. Surprisingly pleasant dealer service experience. 
40000 mi

US $2
Check 4 wheel drive light came on, shop said small leak - repaired, although I never had a leak in 2-1/2 yrs. 1st night home, large leak in garage. Returned for service following day Front differential was leaking, in an ODD place, not from inside seal, but outside seal - replaced, repaired 
12000 mi Transfer case module replaced under warranty. 
78300 mi

US $125
Leaky oil seal front transaxle. 

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2006 Hummer H3 4-door

5-cylinder automatic 4WD

19000 mi

US $60
Grinding noise from front differential, Discovered chipped pinion gear, and frozen in place axle. Replaced complete differential and one half shaft. 

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Hummer H3 Transmission Problems

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.