2009 Hummer H3 electrical system problems
34 owner complaints filed with NHTSA name the electrical system on the 2009 Hummer H3 — 49% of all complaints for this model year.
What owners report
“Category: Recall Reimbursement Problem NHTSA Complaint Description I am filing a complaint regarding General Motors’ 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…”
filed Feb 24, 2026
“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…”
filed Aug 26, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
23-NA-001 · Service Bulletin/Repair Instructions · issued Mar 28, 2025This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723J · Service Bulletin/Repair Instructions · issued Oct 25, 2024
Electrical System problems in other H3 years
| Year | Reports | Share |
|---|---|---|
| 2008 H3 | 34 | 30% |
| 2007 H3 | 76 | 32% |
| 2006 H3 | 96 | 27% |
Other reported problem areas on the 2009 Hummer H3
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.