2007 Hummer H3 problems, complaints & recalls
Most-reported problem areas: Electrical System (39) · Visibility/Wiper (24) · Engine (21)
🧭 Reliability snapshot
Compared against other Hummer H3 model years — complaint volume vs the model's median year, recalls and severity. How we score →
🛣️ Complaints by mileage
192 NHTSA complaints that reported an odometer reading.
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 (822)
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 2025-08-07 · PIC5650M · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. technician may find diagnostic trouble codes b3055, b3060, b3935, c0750, c0755, c0760, c0765, and/o
Unknown Or Other 2025-07-18 · PIP5601C · Service Bulletin/Repair Instructions
this pi communicates the requirement to provide a pico file to receive diagnostic assistance from tac.
Unknown Or Other 2025-05-30 · PIT5074R · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about the use of j-35616-64b and mini 50 terminal test probe, replacement terminals, and terminated leads.
Unknown Or Other 2025-05-30 · PIT5074R · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about the use of j-35616-64b and mini 50 terminal test probe, replacement terminals, and terminated leads.
Unknown Or Other 2025-05-30 · PIT5074R · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about the use of j-35616-64b and mini 50 terminal test probe, replacement terminals, and terminated leads.
Unknown Or Other 2025-03-28 · 23-NA-001 · Service Bulletin/Repair Instructions
this service bulletin provides information for dealers/technicians on onstar module 2g sunset information.
Showing the 6 most recent of 822 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-10-10 · Suspension“i was driving my hummer on the highway about 45 miles an hour when i felt somthing poped and the back started to sway back and forth so i startted slowing down and i was all over the road came to a stop on side of the road looked underneath and my drivers side wheel was all the way back against the body looked up and the frame had broken off and th…”
2026-07-02 · Electrical System · 197,000 mi · 🔥 fire“the contact owned a 2007 hummer h3. the contact stated that while the vehicle was parked, the ac was turned on, and the contact became aware of smoke entering the cabin of the vehicle. the smoke was coming from the front passenger's side underneath the dashboard. the ac was turned off, and the smoke ceased. the contact exited the vehicle and went i…”
2025-06-04 · Electrical System:instrument Panel:speedometer/Odometer · 122,799 mi“odometer fraud. the contact purchased a 2007 hummer h3. the contact discovered that there was a mileage discrepancy. the vehicle was an independent dealer sale. at the time of purchase, the vehicle mileage was 122,791 and at the time of registration, it was discovered that the mileage was 122,799 but additional documents also showed that the mileag…”
2024-01-31 · Suspension“the problem was unknown to me and probably would be to any vehicle owner that is not a mechanic. i was driving a death trap and didn't know how easily it could have been a serious problem. the driver side leaf spring bracket had completely broke apart from the frame on the upper drive side corner in an area that without getting underneath the vehic…”
2023-06-22 · Unknown Or Other“louver hood vent cover flew off on the highway as i was driving. …”
2022-10-17 · Structure · 140,000 mi“the contact owns a 2007 hummer h3. the contact stated that while driving at various speeds, the hood louvers loosened without warning. upon investigation, the contact discovered nhtsa campaign number: 10v179000 (structure) which he linked to the failure. the dealer was notified of the failure and informed that the vehicle was already serviced prior…”
2022-09-07 · Fuel/Propulsion System“i have the well known issue with the passkey security system. nothing is wrong mechanically with the car but the security system will not allow the truck to start, therefore leaving me randomly leaving me stranded. much has been documented on this issue, yet gm has never done a recall. …”
2022-07-29 · Unknown Or Other“so the part that is a malfunction is the rear doors weren’t made with any child lock and of course one of my kids opened the door while i was driving on the highway.i have a 3 and 5 year old and it scared me so bad i had to hurry and pull the hummer over and park and just held my son. i couldn’t even drive after that because of how bad it traumatiz…”
2021-12-03 · Steering“the (2) u-joints , upper and lower, in the steering column were failing and the front wheels would not return to straight. according to the shop that replaced the u-joints they had failed. this is the second h3 with the same problem.…”
2021-11-16 · Fuel/Propulsion System“i bought my 2007 hummerh3 used w/124,000 miles. i've had it a month and already had it in mechanic shop due to not starting. the mechanic thought it was a fuel relay and charged me 258.00 parts/labor/tow. today 11-16-21, only a day after i got it back, it stopped on me again!! just had it towed again. just learning that this is a common problem! is…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.