Problems · by component
2009 Hummer H3 electrical system problems
38 owner complaints to NHTSA about the 2009 Hummer H3 cite electrical system, 48% of all 80 complaints for this model year.
Complaints
38
48% of all complaints
Crashes
0
Reported by owners
Fires
4
Reported by owners
Injuries
0
Reported by owners
What owners say about the electrical system
Verbatim from NHTSA complaints, newest first
“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 defect covered by Recall N150042 (blower motor connector module). The repair was performed at Coleman Buick GMC Cadillac in Lawrenceville, New Jersey. A complete reimbursement package was submitted to GM. GM has denied reimbursement, claiming that this recall was previously repaired in 2016. However: • No documentation has been provided to support that claim. • No repair order number has been provided. • No servicing dealer or repair location has been identified. • No proof of recall closure documentation has been produced. • No warranty claim record has been provided. Despite repeated requests, GM has refused to provide any evidence that Recall N150042 was completed in 2016. The defect was present in 2025 and was corrected by a GM-authorized dealership. If the recall had truly been completed in 2016, documentation should exist and be readily producible. GM is refusing…”
“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 failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assistance was provided. The failure mileage was 97,000.”
“RECENTLY MY 2009 HUMMER H3, HAS BEEN ACTING STRANGE. WHILE DRIVING DOWN THE ROAD, WARNING LIGHTS WILL FLASH, WILL BEEP, (TRACTION CONTROL, ABS, SERVICE 4WD, CHANGE OIL, SERVICE TPM), ALL THE WHILE ALL THINGS ELECTRICAL STOPS WORKING SUCH AS HEADLIGHTS, BRAKE LIGHTS, BLOWER FAN, HEATED SEAT, TURN SIGNALS, AND ALL THIS WHILE DRIVING DOWN THE ROAD AT NORMAL SPEED. IT STARTED DOING THIS AS THE WEATHER GOT COLDER BUT THIS H3 IS WELL MAINTAINED AND IS GARAGE KEPT AND I ONLY USE IT TO DRIVE TO AND FROM WORK. IT IS NOW A SAFETY HAZARD AND WITH THESE ISSUES WILL NOT BE ABLE TO TRADE IT IN. I HAVE NO IDEA WHERE TO START IN ORDER TO FIX IT. AFTER FINALLY DRIVING FOR 30 MIN OR SO SOMETIMES IT WILL FINALLY QUIT MESSING UP AND ACT NORMAL.”
“PERIODICALLY 2-3 TIMES A YEAR FOR PAST 6 YEARS WHEN DRIVING DOWN THE HIGH CAR WILL DIE, WHEN PULL OVER TO THE SIDE OF THE ROAD, CAR WILL NOT RESTART, MAY RESTART AFTER 10 MINUTES OR AFTER TOWED TO REPAIR SHOP,TAKEN TO THE DEALER SEVERAL TIMES AND SEVERAL TIMES TO HIGH END INDEPENDENT AUTO SHOPS, NO ERROR CODE EVER FOUND. READ ON HUMMER FORUMS ISSUE WITH IGNITION SWITCH, REPLACED IGNITION SWITCH AND FAULT HAS NOT RECURRED. *TR”
“TL* THE CONTACT OWNS A 2009 HUMMER H3. THE CONTACT STATED WHEN SHE ATTEMPTED TO DRIVE THE VEHICLE, SHE NOTICED THE PASSENGER SIDE WAS FILLED WITH WATER AND THE ELECTRICAL SENSORS WERE ALL AFFECTED. SEVERAL DAYS LATER WHEN THE VEHICLE WAS DRY, THE VEHICLE WAS TAKEN TO A LOCAL DEALER (FLOW BUICK GMC - GREENSBORO1205 BRIDFORD PKWY, GREENSBORO, NC 27407) FOR DIAGNOSIS AND REPAIRS .THE DIAGNOSIS WAS THE VEHICLES INTERNAL DRAINING HOSE WAS IMPROPERLY INSTALLED. THE VEHICLE WAS REPAIRED BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 130,000.”
“TL* THE CONTACT OWNS A 2009 HUMMER H3. THE CONTACT STATED THAT THE VEHICLE SHUT DOWN AND LOST ALL POWER FOR TEN MINUTES. THE FAILURE OCCURRED WITHOUT WARNING. THE CONTACT VISITED HILEY BUICK GMC (3535 W LOOP 820 S, FORT WORTH, TX 76116, (817) 349-6235), BUT THEY WERE NOT AWARE OF THE FAILURE OR HOW TO PERFORM THE REPAIR. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND REFERRED THE CONTACT TO NHTSA. THE FAILURE MILEAGE WAS UNKNOWN.”
Showing 6 of 38 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.