Defroster/defogger/hvac system: fan/motor
Risk. If the blower motor connector module overheats, it can increase the risk of a fire.
NHTSA has logged 361 owner complaints about the 2006 Hummer H3, most often about the electrical system. It is covered by 4 safety recalls, and for recall 15V-421 the manufacturer reports only 45% of affected cars repaired.

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through July 21, 2026. Updated daily. Photo: Elise240SX, CC BY-SA 4.0.
361 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Electrical system | 96 | 19 |
| Engine | 52 | 1 |
| Structure | 36 | 1 |
| Engine and engine cooling | 35 | 0 |
| Visibility | 31 | 5 |
| Suspension | 29 | 0 |
| Visibility/wiper | 29 | 6 |
| Air bags | 20 | 5 |
| Power train | 20 | 1 |
| 17 other systems | 90 | 8 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. If the blower motor connector module overheats, it can increase the risk of a fire.
Risk. IF THE VEHICLE IS BEING DRIVING WHEN THIS OCCURS, IT COULD STRIKE A FOLLOWING VEHICLE AND CAUSE INJURY AND/OR PROPERTY DAMAGE.
Risk. IF THE PASSENGER SENSING SYSTEM MALFUNCTIONS, THE FRONT AIR BAG ON THE PASSENGER SIDE MAY BE DISABLED WHEN IT SHOULD BE ENABLED, OR ENABLED WHEN IT SHOULD BE…
Risk. A MISPRINTED LABEL COULD LEAD TO IMPROPER VEHICLE LOADING SPECIFICATIONS OR TIRE INFLATION WHICH COULD RESULT IN A TIRE FAILURE, INCREASING THE RISK OF A CRASH.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Hummer.
88kmiles, median
Based on the odometer reading in 81 electrical system complaints. 63% were reported before 100,000 miles.
Dollar amounts owners wrote in their complaints when describing a repair or a quote. These are not price estimates; a system is shown only when at least 8 owners mentioned a cost.
$3,092median
If a problem is covered by a recall, the dealer fixes it for free. Some manufacturers also reimburse owners who paid for a repair before a recall was announced.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the H3 median. How we score
2006 Hummer H3 4-DR in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.


Recent electrical system complaints filed with NHTSA, shortened. Personal details are removed.
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…
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…
THE H3 WILL NOT START. DASH SCREEN KEEPS SHOWING THE PASSLOCK ACTIVATED AND WON'T TURN OFF. COMPUTER THINKS THE H3 IS BEING STOLEN. I HAVE TRIED TO RESET AND NO LUCK. I HAD THIS PROBLEM ABOUT 4 WEEKS AGO AND CHANGED THE FUEL PUMP. THEN IT HAPPENED AGAIN LAST WEEK AND NOW ON 28 MARCH 2020. ENGINE IS…
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.