The 2008 Hummer H3 has 2 safety recalls and 113 owner complaints on file with NHTSA. The most-reported problem area is electrical system (34 complaints).
Recalls2safety recalls
Complaints113filed by owners
Crashes · fires3 · 6reported in complaints
Injuries · deaths5 · 0reported in complaints
2008 Hummer H3 in an NHTSA crash test
Safety recalls
Visibility › Defroster/defogger/hvac system › Fan/motor
Problem: General Motors LLC (GM) is recalling certain model year 2006-2010 Hummer H3 vehicles manufactured February 5, 2005, to May 24, 2010, and 2009-2010 Hummer H3T vehicles manufactured May 21, 2008, to May 24, 2010. In the affected vehicles, the connector module that controls the blower motor speed for the heating, ventilation and air conditioning system may overheat.
Risk: If the blower motor connector module overheats, it can increase the risk of a fire.
Fix: GM will notify owners, and dealers will replace part of the blower motor connector and harness, free of charge. The recall began February 26, 2016. Owners may contact Hummer customer service at 1-800-732-5493. GM's number for this recall is 15042.
Problem: GM IS RECALLING CERTAIN MODEL YEAR 2006 THROUGH 2010 HUMMER H3 VEHICLES. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH THE INTEGRAL CLIP-TABS ON THE LOUVER ON THE HOOD MAY FRACTURE, CAUSING THE HOOD LOUVER RATTLE AGAINST THE HOOD AND BECOME LOOSE. IF THIS INDICATOR IS UNNOTICED, ADDITIONAL CLIPS COULD FRACTURE AND THE HOOD LOUVER COULD DETACH FROM THE VEHICLE.
Risk: IF THE VEHICLE IS BEING DRIVING WHEN THIS OCCURS, IT COULD STRIKE A FOLLOWING VEHICLE AND CAUSE INJURY AND/OR PROPERTY DAMAGE.
Fix: DEALERS WILL APPLY AN ADHESIVE TO THE HOOD LOUVER TO SECURE IT TO THE HOOD. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON APRIL 12, 2010. OWNERS MAY CONTACT HUMMER AT 800-732-5493 OR AT THE OWNER CENTER AT WWW.GMOWNERCENTER.COM.
Recall repairs are free at any authorised dealer. A recall listed here may already have been fixed on a particular car: enter its 17-character VIN at nhtsa.gov/recalls to see open recalls.
Crash test ratings
NHTSA side barrier crash test
2008 Hummer H3 4-DR w/SAB
Overall
Not Rated
Frontal crash
Not Rated
Side crash
Not Rated
Rollover
★★★★★
Rollover risk
24.6%
NHTSA 5-Star Safety Ratings (New Car Assessment Program). Ratings are comparable only between vehicles of similar size and weight, and ratings from 2011 on use tougher tests than earlier years. Photos: NHTSA.
Fuel economy
H3 4WD
15mpg combined
City / highway
14 / 18 mpg
Fuel
Regular Gasoline
3.7 L · 5 cyl · Automatic 4-spd · 4-Wheel or All-Wheel Drive · about $4,450/year to fuel
H3 4WD
15mpg combined
City / highway
13 / 18 mpg
Fuel
Regular Gasoline
3.7 L · 5 cyl · Manual 5-spd · 4-Wheel or All-Wheel Drive · about $4,450/year to fuel
H3 4WD
14mpg combined
City / highway
13 / 16 mpg
Fuel
Regular Gasoline
5.3 L · 8 cyl · Automatic 4-spd · 4-Wheel or All-Wheel Drive · about $4,800/year to fuel
EPA estimates from fueleconomy.gov for each engine and transmission sold. Annual cost is the EPA's estimate for 15,000 miles a year at its current fuel and electricity price assumptions. Your results will vary.
What owners report
Problem area
Complaints
Crashes
Fires
Injuries
Typical mileage*
Electrical system Horn; Wiring
34
1
4
0
80,000 mi
Engine
18
0
0
0
71,000 mi
Air bags Side/window
17
1
0
5
57,000 mi
Visibility Defroster/defogger/hvac system › Fan/motor; Sun/moon roof assembly
16
0
1
0
88,264 mi
Visibility/wiper
12
0
0
0
81,000 mi
Structure Body; Frame and members
9
0
0
0
39,892 mi
Unknown or other
8
0
0
0
100,000 mi
Steering Column; Rack and pinion
5
1
0
0
52,891 mi
Suspension Front; Front › Springs › Leaf spring assembly
4
1
0
0
67,000 mi
Equipment Appliance › Air conditioner
4
0
3
0
63,463 mi
Engine and engine cooling Exhaust system › Manifold/header/muffler/tail pipe
4
0
0
0
65,106 mi
Fuel/propulsion system
4
0
0
0
—
*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Recent owner complaints
Apr 10, 2026 · 67,000 milesSuspension › Front › Springs › Leaf spring assembly The contact owns a 2008 Hummer H3. The contact stated that while his son was driving 35 MPH, there was a loud metal rattling sound while attempting to turn left or right. The driver also heard the sound coming from the rear of the vehicle. The vehicle was taken to an independent mechanic, where it was diagnosed, and it was determined that the leaf springs needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The failure mileage was 67,000.
Jan 28, 2026Fuel/propulsion system The fuel level sensor stopped working now it say Iâm on E These go out on these cars And are on the recall list, but not on my vehicle yet
Jul 13, 2025Electrical system The pass lock in this vehicle is faulty. On numerous occasions, it has left me unable to start the vehicle, but if you wait 10 minutes each time, it will start again, but it happens all the time. I've seen numerous complaints online and GM needs to do something about it.
Apr 8, 2025 · 178,000 milesVisibility The contact owns a 2008 Hummer H3. The contact received notification of NHTSA Campaign Number: 15V421000 (Visibility); however, the dealer refused to perform the recall repair due to the age of the vehicle. The contact stated that the dealer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact stated that the blower motor had become inoperable. The failure mileage was approximately 178,000. Parts distribution disconnect.
May 29, 2024Electrical system The last dealership I went to they advised to come th the dealership but when I got there nobody wasnât trying to work there instead the said that it was going to be hard to work on it cause nobody work on those cars anymore and then they said they were going to order the part but never call me back for it. Call them but gave me the runaround basically.
Dec 29, 2023Structure › Body Engine was replaced at 163,000 miles now at 168,000 miles the frame is rusted beyond repair and is about to give at any moment nothing really left near rear axels. This could have definitely caused a horrible accident to myself or others having a big car just give way and collapse. Took it to mechanic who warned me first then next day took it to body shop that said nothing could be done. Basically both said get rid of it for parts as fast as you can and donât look back. After the body shop guy actually showed me the rusted out areas i was scared to even drive it like the 10miles back to my house. It sucks after spending all that money on an engine and now having this issue and now having…
Dec 15, 2023Engine exhaust leaking in cab of the car .Exhaust bolts broke or manifold cracked problem i heard about on line .on a long trip could make you passout with the fumes .please check it out .on most inline 5 cyclinder engines GM makes .Thank you [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Oct 31, 2008 · 1,000 milesElectrical system The contact owns a 2008 Hummer H3. The contact stated that the vehicle intermittently failed to start up without warning. The contact stated that after waiting ten minutes the vehicle started. The contact stated that recently the failure had become more frequent. The contact had taken the vehicle to a dealer however, the mechanic was unable to determine the cause of the failure. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 1,000.
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
