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.
The worst 2008 Hummer H3 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Electrical34
- Visibility27
- Engine22
- Airbags17
- Body8
- Steering5
- Brakes4
- Fuel system4
- Suspension4
- Lights3
- Seats3
- Driver assistance2
- Wheels2
- Acceleration1
- Seat belts1
- Transmission1
Specific symptoms reported on the 2008 Hummer H3
Recalls 2
Visibility: defroster/defogger/HVAC system: fan/motor
- What is wrong
- 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.
- Remedy
- 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.
Recall number 15V421000 · Recall details
Structure: body: hood
- What is wrong
- 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.
- Remedy
- 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 number 10V179000 · Recall details
Technical service bulletins for the 2008 Hummer H3 909
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- New Vehicle Monitoring Programs Section in IVH
- Unknown or other
- This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
- Unknown or other
- This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
- Unknown or other
- Unknown or other
- Electrical system
- This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline...
- This service bulletin provides information on some vehicles that may rock or move slightly forward or...
2008 Hummer H3 fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 3.7L 5‑cyl | 4WD | 13-14 | 18 | 15 |
| 5.3L 8‑cyl | 4WD | 13 | 16 | 14 |
What 2008 Hummer H3 owners say
Most recent owner complaints, unedited.
The fuel level sensor stopped working now it say I’m on E These go out on these cars And are on the recall list, but not on my vehicle yet
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.
The contact owns a 2008 Hummer H3. The contact received notification of the federal safety agency 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.
The last dealership I went to they advised to come th the dealership but when I got there nobody wasn’t 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.
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 don’t 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 to buy a new car.
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)
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.
The contact owns a 2008 Hummer H3. The contact stated that the vehicle failed to start. The anti-theft system warning light illuminated. The contact waited 10 minutes for the vehicle to reset, per the vehicle Owner’s Manual instruction. The contact was able to drive the vehicle. The contact stated that the failure reoccurred increasingly several times per day. Additionally, the vehicle had taken 45 to 90 minutes to reset and restart. The vehicle was towed to an independent mechanic on two occasions; however, the mechanic was unable to duplicate the failure as the vehicle would restart as needed while at the dealer. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed nor repaired. The failure mileage was approximately 101,421.
The contact owns a 2008 Hummer H3. The contact stated that while driving at various speeds, an abnormal knocking sound was coming from the engine. The check engine warning light was illuminated. The contact stated that the failure worsened while driving at highway speeds. The contact called the dealer and the manufacturer and notified them about the failure. The contact was informed by both that there were no recalls on the vehicle. The vehicle was not repaired. The failure mileage was unknown.
Compare the 2008 Hummer H3
Other model years
Questions about the 2008 Hummer H3
Is the 2008 Hummer H3 reliable?
Owners have filed 113 complaints about the 2008 Hummer H3, close to a typical H3 model year.
What is the 2008 Hummer H3 year score?
The 2008 Hummer H3 scores 75 out of 100 (average). The score compares it with the other model years of the Hummer H3: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2008 Hummer H3?
Electrical system, with 34 complaints, typically around 80,000 miles. Next is visibility (27).
How many recalls does the 2008 Hummer H3 have?
2 recalls, covering visibility and structure.
What year does the Hummer H3 have the most electrical problems?
The Hummer H3 model years with the most electrical complaints are 2006 (96 complaints), 2007 (76 complaints) and 2008 (34 complaints).
What gas mileage does the 2008 Hummer H3 get?
Official estimates for the 2008 Hummer H3 range from 14 to 15 mpg combined. The most efficient version (3.7L 5-cyl, 4WD) gets 13-14 city and 18 highway.
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