NHTSA — Electrical System Problems

2007 Hummer H3 (Page 3 of 3)


really awful
Crashes / Fires:
1 / 9
Injuries / Deaths:
0 / 0
Average Mileage:
67,358 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2007 Hummer H3 electrical problems

electrical problem

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2007 Hummer H3 Owner Comments (Page 3 of 3)

« Read the previous 20 complaints

problem #15

Feb 022014


  • 120,000 miles


The contact owns a 2007 Hummer H3. The contact stated that while driving 25 mph, she began to smell plastic burning under the dashboard. The contact stated that when she stopped the vehicle, she noticed that the resistor for the motor blower had caught on fire and melted. The vehicle was not taken to the dealer for inspection. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 120,000.

- Stoughton , WI, USA

problem #14

Jun 062013

H3 5-cyl

  • 68,000 miles
Here are multiple issues well documented across the internet of Hummer having and issue with these resistors, as well as Chevy colorados. My blower quit a few months ago, and the resistors and wiring harness are melted to the point of charring! the NHTSA needs to investigate this or are you waiting for an actual fire to cause GM to fix this issue?

- Kittanning, PA, USA

problem #13

Jan 142013

H3 5-cyl

  • 94,000 miles
The anti-theft passlock system is faulty and will not let me start my car. It has happened twice since I got the car in December of last year. Going on-line to see what to do about it made me aware of the overwhelming amount of GM car owners that this has affected. Some being stranded for hours and days of not being able to start their cars due to the faulty passlock system. It is happening to all makes and models of GM cars. I called GM and they weren't interested in doing anything about the problem unless you force them to. Please check into this and help those of us who get stranded in places (sometimes scary places) because our car won't start. Thank you.

- Lynden, WA, USA

problem #12

Mar 052013

H3 5-cyl

  • 65,000 miles


Driving down the road at 20 degrees outside and the heater fan quit. Had cut out a couple times before and come back on.

- Tawas City, MI, USA

problem #11

Nov 092009


  • 40,000 miles
The contact owns 2007 Hummer H3. The contact stated that the ignition failed to recognized the key, causing the anti-theft system to activate. The vehicle was taken to the dealer several times who was unable to diagnose the failure. The manufacturer was made aware of the failure who did not offer any assistance. The vehicle was not repaired. The VIN was not available. The failure mileage was 40,000 and the current mileage was 98,000.

- Baconton , GA, USA

problem #10

Aug 292011

H3 5-cyl

  • 76,500 miles
I was in a parking lot, I started the vehicle and turned the air conditioner on. It worked but suddenly stopped blowing air. I took it in and it was diagnosed as the blower motor resistor had gone out. I had it replaced only to have the same thing happen again one week later but this time I smelled something burning. The wiring had burned going to the resistor. The technician informed me that this happens often with these vehicles and he doesn't understand why there isn't a recall. After researching the problem, I found that this is a common and potentially very dangerous problem with the Hummer H3. There needs to be an investigation and recall so that no one gets hurt. If I had a passenger in my vehicle at the time of this incident, they would have received burns on their feet from the wiring malfunction and burning. I again am having to pay to get this corrected. VIN # [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Norco, CA, USA

problem #9

Jul 202012


  • 61,000 miles


The contact owns a 2007 Hummer H3. The contact stated that he started the vehicle and noticed that the air conditioner was no longer functioning. The vehicle was taken to an authorized dealer and the contact was informed that the fan switch needed to be repaired. The contact was also informed that the wiring harness was burned. The vehicle was in the process of being repaired. The failure mileage was 61,000. The VIN was unavailable.

- Ellwood City, PA, USA

problem #8

Aug 102012

H3 5-cyl

  • 47,950 miles
Malfunction of air blower for air con and heat, melted plastic on resistor, rendered in opt.

- Milwaukee, WI, USA

problem #7

Jul 202012

H3 5-cyl

  • 53,600 miles
I am the original owner of a 2007 General Motors Hummer H3. The auto has been well maintained and professionally serviced by a GM dealership. The vehicle has 53,600 miles and is in perfect mechanical condition except this recent issue with passlock security which has rendered the vehicle unreliable and a personal and public safety hazard. The vehicle is less than 30 days out of warranty and dealer will not repair under warranty. In recent weeks, the passlock security light began randomly illuminating while driving. This light could extinguish on next start or stay illuminated through several starts. Two weeks ago while returning from a trip later at night, the vehicle was disabled and failed to start in an airport parking lot. The passlock light continually flashed and the engine cranked, but without starting. A tow truck was called, but by the time it arrived, an attempt to start the vehicle was successful and the light was extinguished. This has happened at least twice since in less inconvenient and less dangerous areas. The vehicle is unreliable and unsafe. I cannot trust it to allow my wife to drive it for fear if her being marooned in a dangerous situation. The dealer has indicated it might be several hundred dollars to repair this problem and was well aware that it was a widespread problem with GM autos. There are hundreds of similar complaints on the internet and yet there is no response or attempt to remedy this situation by the manufacturer. I am a senior citizen and need to rely on my vehicle, but cannot rely on a vehicle whose security system can disable the vehicle at any random time. As my representative, I request the NHTSA address this with the manufacturer and remedy this safety concern. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Creedmoor, NC, USA

problem #6

Jul 132012


  • 60,000 miles
The contact owns a 2007 Hummer H3. The contact stated that the air conditioning unit fan failed. The vehicle was taken to the dealer where the failure was located at the wiring harness. The vehicle was repaired. The contact stated that he owned a second 2007 Hummer and the fan wiring harness failure was experienced on the other vehicle as well. The vehicle was not repaired. The manufacturer was made aware of the failure. The VIN was not available. The failure and the current mileage was 60,000.

- Ellwood City , PA, USA

problem #5

May 202012

H3 5-cyl

  • 40,000 miles


My vehicle has a very common issue with a faulty resistor/wiring harness on the blower motor. There is a safety recall for the same problem on other GM trucks & vehicles and the problem is widely known/reported on the internet. For some reason GM refuses to issue/fix this recall for the Hummer H3? the problem causes the wiring to get so hot to melt the insulation, which could cause a fire. I park my vehicle in an attached garage.

- Evansvile, IN, USA

problem #4

Oct 292010

H3 5-cyl

  • 35,000 miles
Ever since I purchased this vehicle, the vehicle has stalled at between 25mph and 0. I work for the us census bureau, permanent worker and I travel through all types of weather conditions in a day, from 9,000 ft mountains covered in snow to desert gravel roads, mesas, cliffs. Over the past two years the vehicle has shut off while traversing mountain roads covered in snow with no guard rails, and three times, when the engine shut off, I lost steering and came within inches of going off the side (cliffs) of these roads, not to mention in town, when my engine shuts off as I drive, I have come close to hitting other vehicles or poles as I lose power steering on a turn.. I have to drive about 90 miles one way to get it serviced, while under warranty, I had it "repaired" about five times, no success, once warranty expired, GM dealers 90 miles away were still willing to inspect vehicle since problems started while under full GM warranty, but now, they refuse to give me a rental and tell me they do not know what the problem is. My local GM dealer (alamogordo) refuses to inspect vehicle and thus I am required to make a 180 mile round trip, but now, even dealer tells me they do not know what the issue is and they cannot reproduce the problem in the shop. I took about 6 videos with my droid after the problem happens, because the problem lingers for about 15 minutes, then it stops and the vehicle works fine. The videos how the RPM's going up and down, up and down, until the car shuts off, I restart it, then it shuts off again, over and over again. Problems usually appear in the am, as I drive off for the first time, before it is driven a good distance, but can and has happened at any moment. Very dangerous and I do not feel safe each morning as I leave my mountain home, especially in cold snow weather.

- High Rolls , NM, USA

problem #3

Jun 052011


  • 63,000 miles
HVAC blower fan harness/conector burnt fan no operating found fix on Hummer forum.

- Florida, FL, USA

problem #2

Feb 012010


  • 60,000 miles
The contact owns a 2007 Hummer H3. The contact attempted to start the vehicle but it would not start. After ten minutes, the vehicle started. The vehicle was taken to an authorized dealer where it was repaired (repair details were not given). The failure continued to occur intermittently. In addition, the contact stated that the seat heater on the driver's seat would involuntarily turn on and the seat shifted while she made turns or applied the brakes. The vehicle was taken to an authorized dealer where the failure were repaired, however the failure continued. The failure mileage was approximately 60,000 and the current mileage was approximately 72,000.

- Baconton, GA, USA

problem #1

Jun 072009


  • 33,184 miles
The contact owns a 2007 Hummer H3. The contact was notified that his vehicle caught fire while parked in the garage. The fire originated under the hood near the battery area. The vehicle was destroyed. The fire department filed incident number 09060410 and the manufacturer filed case number 71-731425623, reference number 6744389. The failure and current mileages were 33,184.

- Indianapolis , IN, USA

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