2006 Hummer H3 problems, complaints & recalls
Most-reported problem areas: Electrical System (52) · Engine (41) · Visibility/Wiper (29)
🧭 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
285 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 (738)
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 2025-07-18 · 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.
Unknown Or Other 2025-02-20 · PIP5358D · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. technician should get record a sound clip or take a video of the noise for assessment by engineering. technician will need to
Showing the 6 most recent of 738 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-07-21 · Electrical System“theses templates dosent recognize the key and kicks on the security system which stops the motor from turning on. so you are stuck for 10 minutes then you can try again all so sometimes the motor tries to turn on by just sticking the key in the ignition before you even turn it. by looking at youtube alot of the h3s and the colorados do this…”
2026-01-14 · Structure:frame And Members · 130,000 mi“the contact owns a 2006 hummer h3. the contact stated that the frame was rusted on the driver's side. the check engine warning light was illuminated. the contact looked underneath the vehicle and was able to see through the subframe. the contact also noticed cracks in sub frame. the contact was concerned about driving the vehicle. the vehicle was …”
2025-11-11 · Unknown Or Other“the blower resistor and harness needs replaced it looks like it caught fire or default…”
2025-08-09 · Unknown Or Other“i was trying to get away from a stranger that was following me that was threatening and scary and when i got in the my hummer h3 it wouldn't start its the anti theft that's thinking the car is being stolen this is happened several times of the car not starting i went to google and youtube and there's hundreds of videos complaining and giving instr…”
2025-01-02 · Engine“on the electrical, i refer to my air conditioning and heater. when i have my air selection to coldest and i drop 1 click for it to be less cool, my heater turns on and at times it smells like something burning. i have to turn it off . on the engine, after i hit 90,000 miles, i have to fill up my engine oil every 2-3 weeks because my vehicle is burn…”
2024-12-28 · Suspension“was driving this vehicle about 45 mph and began to shake violently. was able to get it slowed down and back under control. happened two more times on my drive home and took it to an auto repair shop today and found the frame is broken on both sides in front of rear leaf springs. …”
2024-08-27 · Engine“was heading home from work and the 2006 hummer h3 shut off while traveling in the middle of traffic was able to cruise in nuetral until i could stop to start car again started car and yet again i receive a cylinder misfire code which has been repaired on multiple attempts still no success. i am going to end up either crashing or an emergency vehich…”
2024-08-23 · Unknown Or Other“sunroof leaking creating water to leak into the driver seat, passenger seat, speakers on the door. water trickling down from the onstar system while parked and in motion this is a safety hazard. the only resolution that is given from gm is to blow out the hose to the sunroof, that’s not helping this issue is creating mole into the vehicle and once …”
2024-08-22 · Engine“engine has very bad rough idle after multiple attempts to repair will get a misfire code often that goes on and comes off engine has rough idle to the point where truck shuts off completely while waiting at traffic light. my safety is at risk as this could happen during driving causing a wreck or during a light change when the emergency vehicles ne…”
2023-11-22 · Wheels“frame rust entire frame needs replaced…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.