2010 Hummer H3 problems, complaints & recalls
Most-reported problem areas: Electrical System (4) · Visibility (1) · Power Train (1)
🧭 Reliability snapshot
Compared against other Hummer H3 model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (2)
Visibility:defroster/Defogger/Hvac System:fan/Motor 2015-07-01 · campaign 15V421000 · 164,993 vehicles
Defect: 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.
Structure:body:hood 2010-04-30 · campaign 10V179000 · 162,129 vehicles
Defect: 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.
Service bulletins (1,066)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-09-04 · PIP4902W · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Unknown Or Other 2026-04-01 · PIT3271Q · Service Bulletin/Repair Instructions
this preliminary information communicates information about how to determine if a wheel and tires size change is available.
Unknown Or Other 2026-03-09 · PIP6104 · Service Bulletin/Repair Instructions
this preliminary information communicates the steps on how to save a gds2 session log and upload to a technical assistance case in cx connect.
Unknown Or Other 2026-03-09 · PIP4902V · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Unknown Or Other 2026-01-08 · PIP4902U · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Unknown Or Other 2025-11-20 · PIT5214G · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions without utilizing the support of general motors technical assistance center. if va
Showing the 6 most recent of 1,066 bulletins. Search all of them free at nhtsa.gov.
What owners report
2024-03-02 · Power Train“my transfer case established a large fluid leak so i inspected it, the findings was a large hole in the main housing on the transfer case fluid was leaking out. the transfer case was removed and disassembled, and found that the 2 screws that hold the chain guide to the housing had backed out or fell out and let the chain guide fall down in to the …”
2019-10-22 · Electrical System · 200 mi“tl* the contact owns a 2010 hummer h3. on many occasions, the vehicle would not immediately start and the security indicator illuminated. the vehicle had been serviced for the same failure many times at maritime motors (985 post rd, fairfield, ct). the fuel pump, alternator, and battery were replaced during the repairs, but the failure continued. t…”
2018-11-14 · Electrical System · 107,000 mi“the vehicle sometimes will not start due to a problem with the security sensor in the ignition switch. this is when starting up the vehicle and will only periodically occur. the security system light comes on and you have to wait 10 minutes to start the vehicle, then it will start. it has happened in the summer and now the winter.…”
2015-01-28 · Engine · 60,000 mi“while i was on the road going home i noticed that my temperature was slowly rising then all of a sudden my engine room was smoking i pulled aside and looked at the engine room the smoke was caused by the radiator leaking on front top cover of radiator was cracked... don't get me wrong but i never did 4 wheeling on my hummer i drive it for my everyd…”
2015-01-13 · Electrical System · 30,450 mi · 🔥 fire“my heating and ac blower motor stopped working on a vehicle that has less than 31k miles on it. the estimated repair costs are 500$, not including the tow, being that it is the middle of winter and the closest dealership is 20 miles away. additionally, the time off of work and ebing without a car for a week. i have heavily researched this i…”
2013-06-29 · Electrical System · 80,300 mi“ i was driving home and the fan on the a/c stopped working. shortly afterward i detected a burning odor. i ended up replacing the resistor and wiring harness for the a/c blower motor. the resistor was burnt and the harness wire was slightly melted. i am concerned about the potential for a fire if this happens again. *tr…”
2010-08-10 · Visibility“sun glare reflects off the chrome part placed on the engine hood and quickly blinds the driver for short periods of time causing very dangerous road driving conditions. *tr…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.