Hummer H3 Electrical System Problems
Owners have filed 246 complaints with NHTSA about electrical system problems on the Hummer H3 across 6 model years. The 2006 model year has the most (96). The words owners use most often: “blower motor” (11% of reports).
- 246electrical system complaints
- —median miles at failure
- 2mention a crash
- 1mention an injury
- 0related recalls
- 40%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Blower motor: mentioned in 28 of 246 complaints (11%)
- Wiring harness: mentioned in 23 of 246 complaints (9%)
- Glove box: mentioned in 13 of 246 complaints (5%)
- Anti theft: mentioned in 13 of 246 complaints (5%)
At what mileage do electrical system problems happen?
Based on 210 complaints that reported the odometer reading.
How serious are the reports?
Of 246 complaints, 2 mention a crash, 42 a fire, 1 an injury.
Hummer H3 electrical system complaints by model year
When owners reported it
Related recalls (0)
No safety recall lists electrical system for the Hummer H3. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
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…
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…
Category: Recall Reimbursement Problem NHTSA Complaint Description I am filing a complaint regarding General Motorsâ refusal to reimburse an out-of-pocket repair related to Safety Recall N150042 on my 2009 Hummer H3 (VIN: [XXX] ). On December 31, 2025, I paid $946.06 out-of-pocket to correct the…
The contact owns a 2009 Hummer H3. The contact stated that the vehicle failed to immediately start, and the security warning light illuminated. After several attempts, the vehicle was started. The contact stated that the failure was intermittent but had become more frequent. The cause of the…
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.
Frequently asked questions
Do all Hummer H3s have electrical system problems?
No. NHTSA has 246 owner complaints about electrical system for the Hummer H3. Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the Hummer H3 electrical system?
No recall currently lists electrical system for this vehicle.
What do owners say about electrical system problems on the Hummer H3?
The most frequent phrase is “blower motor”, in 28 of 246 complaints, followed by “wiring harness” (23).
Other Hummer H3 problems
- Engine problems (124)
See all Hummer H3 problems.