NHTSA — Electrical System Problems

2007 Hummer H3 (Page 1 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 1 of 3)

problem #55

Jan 032017


  • 135,000 miles


The battery continues to be dead: Sometimes starts, sometimes doesn't. I've replaced the battery twice and problem remains. How many complaints does it take for the manufacturer to remedy this problem? I love my Hummer, but I am afraid to go anywhere in it because I don't want to get stranded when it is below freezing outside. Currently I have to carry a spare battery and jumper cables in my backseat just to get it started when this problem acts up. Also affecting my ability to work and take care of my family. Strongly suggest a class-action law suit against the manufacturer to correct this problem. Enough is enough!!

- Wheelersburg, OH, USA

problem #54

Nov 132016


  • 80,300 miles
I purchased this 2007 Hummer H3 on June 2016 with 77,000 miles on it. On 11/13/2016 with 80,300+ miles, I experienced the first no start condition due to "passlock theft-deterrent system" indicator blinking when I tried to start the vehicle. I looked up the owners manual on page 100 and it indicated to wait 10 minutes before starting the vehicle again. The vehicle started after waiting for 10 minutes. The second no start condition with "passlock theft-deterrent system" indicator blinking again was on 12/05/2016 with 80,900+ miles and outside temperature was freezing point at that time and I have to wait 10 minutes inside the cold vehicle before I can start it again.

- Marysville, WA, USA

problem #53

Nov 062016


  • miles
Several times, while parked, the passlock security system will randomly disables the engine from starting. After waiting 10 minutes the system will allow the vehicle to start. This makes starting the vehicle in an emergency very unreliable and dangerous.

- Trabuco Canyon, CA, USA

problem #52

Jul 152016


  • 82,000 miles


Ignition switch on this vehicle is failing same as on other GM vehicles which have been recalled. Switch setting changes into off position shutting off vehicle when a moderate bump or dip in the road is encountered, shutting off vehicle and locking steering wheel. GM refuses to honor recall for ignition since this vehicle was not listed under active recall/lawsuit settlement. 5 occurrences of this shut down to-date. GM complaint number 8-2272247746 was resolved in their opinion by stating to me this vehicle was not covered under the umbrella of the current GM ignition recall. The stated that they share my safety concern and believe I should have the vehicle serviced at my expense. They suggested contacting safe cars.gov to attempt adding this vehicle to active recall. Please help.

- Carlsbad, CA, USA

problem #51

Sep 102010


  • 7,000 miles
The contact owns a 2007 Hummer H3. While the vehicle was parked, the key became stuck in the ignition and could not be removed. The vehicle was towed to a dealer where it was diagnosed that the ignition cylinder failed and needed to be replaced. The dealer made many attempts to repair the vehicle, but the remedy failed. In addition, various electrical functions failed and a burning odor was noticed. The manufacturer was notified of the failure. The failure mileage was 7,000.

- Steamwood, IL, USA

problem #50

Jul 212016


  • miles
Repeat no start due to faulty security system. Had to go to emergency room and could not go due to faulty security or "pass lock" issue and this is apparently known. Why is there no recall, this is a safety issue!

- Reno, NV, USA

problem #49

Jun 272016


  • miles


My car will not start due to the pass lock engaging when I go to start the vehicle. I have to wait 10 to 15 minutes for pass lock to reset and then it will start. My car is always parked when this problem occurs. This problem has been on going for a year now, started once a month and now it's every 2 weeks.

- Odessa, TX, USA

problem #48

Jun 012016


  • 67,000 miles
Passlock problem (GM security) causing the vehicle to stall at any speed with no power brakes or steering till you coast to the shoulder and try it again might go 1 mile might go 100 miles before it happens again, passlock light flashes when vehicle stalls, tons of people with the same problem on the internet, this has happened 100's of times till I took it to the only service mechanic shop on our island in Alaska and it has sat there for a month no one can figure out the problem and no dealership has come through on the phone to help either

- Thorne Bay, AK, USA

problem #47

Mar 182016


  • 98,000 miles
The contact owns a 2007 Hummer H3. While the vehicle was parked with the engine off, the radio turned on independently. The failure recurred intermittently. The vehicle was not diagnosed nor repaired. The manufacturer was not notified of the failure. The failure mileage was 98,000.

- New Orleans, LA, USA

problem #46

Aug 222014


  • 87,000 miles
I keep getting a code that states that my truck runs with a low engine temperature. Plus my truck has had a leak from some where around the lower windshield that is causing electrical problems and soaking wet floors! we had a mechanic look for the leak and try to fix this issue but was unable to find the problem and we were also told by a few dealership that they have seen a lot of H3 Hummer with the same problem! also we are having issues that causes the traction signal to come on regularly and it causes my truck to lock up. It has almost caused us to wreck several times! it's very scary to drive my Hummer! every time we have any of these problems we are always in motion and it's always on the highway when we are driving at higher speeds. It never seems to happen while driving around town!! this has been continuing going on ever since we purchased this vehicle in August 2014

- Sulphur, LA, USA

problem #45

Aug 122015


  • 48,000 miles


I received an important safety recall letter from Hummer (GM) in August 2015 for my 2007 Hummer H3. It is safety recall 15042. The letter indicated that it was a safety recall stating the connector module that controls the blower motor speed in the heat/vent/air conditioning (HVAC) system may overheat under extended operational periods at high and medium-high blower speeds. If this condition occurs there could be a risk of fire. The letter said parts weren't available and when they were I would be contacted to arrange a service appoint. After several months and no call, I contacted the number, 1-800-833-6537, and asked what the hold-up is on the parts? I was told the parts were still unavailable. After several more months, I called again only to receive the same excuse with no projected date of arrival. To me this unacceptable especially this recall involves a potential risk of a fire. It is now March 2016 and I have not been contacted. I find it hard to believe that it takes so long to obtain replacements. I am hesitant to use the blower motor because of the potential fire risk.

- Leavenworth, KS, USA

problem #44

Aug 102015


  • miles
The contact owns a 2007 Hummer H3. The contact stated that the vent control functions for the ac/heater failed to operate without warning. The vehicle was not diagnosed or repaired. The contact later received notification of NHTSA campaign number: 15V421000 (visibility) and 10V179000 (structure) but the parts were not available to receive the recall repairs. The manufacturer was notified of the failure. The failure mileage was not available. Parts distribution disconnect.

- Brooklyn, NY, USA

problem #43

Feb 052016


  • 120,000 miles
The radiator has a crack in it which is a very common issue...needs to be recalled. My H3 was idling rough and would shut off. Had to replace throttle body and solenoid. The anti-theft acts up and the H3 won't start have to wait 10 minutes. The ac blower and connector burnt paid for it to get fixed then the recall comes out 7 days later....still haven't been refunded for that. I have all the issues on my 2007 H3 that should all be recalled and fixed at GM expense. Sunroof drains get clogged all the time and have water leak onto the floor which makes the ABS light trigger on and off. Issue after issue which GM doesn't take any responsibility for. It looks like it's time to sell the Hummer H3!!

- Tallahassee, FL, USA

problem #42

Jan 112016


  • 111,000 miles
The contact owns a 2007 Hummer H3. While driving approximately 60 mph, the contact smelled burning plastic. The vehicle became filled with the odor. The dealer diagnosed that the connector model, blower switch, and HVAC unit melted and needed to be replaced. The manufacturer was notified. The approximate failure mileage was 111,000.

- Amarillo, TX, USA

problem #41

Jun 012014


  • miles
After reading all if these complaints I decided to write mine. Probably about a little over a year ago the first thing that started was my tpm sensor would come on and then go off I took it to the tire store and they said this could be going bad ok well then it stopped, next I got into my vehicle from grocery shopping and my car would not start in the hot summer in my vehicle ( thank god my 2 young kids weren't with me) after several attempts it finally started, this happens a lot more then once until one day when it was freezing cold outside in wonderful Wyoming my key would not come out of the ignition, I had to unplug my battery until I could take it to the shop ! then after I get my car back a few days later my blower to my heater quit working for a few minutes and then I smelled a burning smell, I called the repair shop again to take it back and there was a charred wire and they had to replace what was being recalled.( I received the 1st letter about 6 months later), which I still haven't received a 2nd letter! now I'm starting to have a issue of my car dying when I'm slowing down to stop at a stop sign or to turn!!! I happened to get on her and read all the complaints and nothing has been done!!! I have 2 small children and this is absolutely disturbing, I am really regretting not getting rid of this vehicle last year!! I beg that you all please look into these, before someone dies or anything else!! ( it shouldn't even get to that point). I had about 70,000 miles when this all started and noe I have 84,999. My mph was 0-30 !!!

- Casper, WY, USA

problem #40

Mar 102014


  • 40,000 miles
The contact owns a 2007 Hummer H3. The contact stated that the key failed to turn in order to start the vehicle. In addition, the vehicle stalled. The vehicle was taken to the dealer more than five times and the repairs did not remedy the failures. The details were not available. The vehicle was taken back to the dealer where the vehicle was pending a diagnosis. The manufacturer was notified of the failures. The VIN was not available. The approximate failure mileage was 40,000.

- Streamwood, IL, USA

problem #39

Jul 012015


  • miles
The contact owns a 2007 Hummer H3. The contact stated that when the vehicle was started, the heater and defroster were inoperable. The contact also stated that the air conditioner failed. The failure occurred each time the vehicle was driven. The contact received notification of NHTSA campaign number: 15V421000 (visibility) however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the failure. The approximate failure mileage was 85,000. The VIN was not available. VIN tool confirms parts not available.

- Louisville, KY, USA

problem #38

Nov 142015


  • 134,000 miles
Went out to start Hummer would not start it turns over but will not start waited a few minutes and it started up with no issue so decided to go ahead about my day driving on the freeway and the truck cuts off while driving on the free way I was terrified was close to an exit got off and restarted the car no issues this has happened to many times and is dangerous I have children and this needs to be looked into do not know if it is the ignition or the alarm system sending the wrong signal please help I'm to the point of going to find a new vehicle because I D not feel the Hummer is safe please help before something bad happens please

- Pontiac, MI, USA

problem #37

Nov 042015


  • 72,000 miles
The car wouldnt start because the passlock system engages and then you have to wait 10 min for it to reset, then it will start. The vehicle was in park and off.

- Lake Orion, MI, USA

problem #36

Apr 102015


  • 90,000 miles
I've had electrical concerning the factory and after market alarm system that the dealer influenced me to buy. I've had some sort of short causing to have it towed to dealer several times, I never got a complete understanding or reasoning for the problem. Now my air condition blower stopped working and I was not informed of the recall for my car from the manufacturer or the dealer. After contacting dealer that I bought the car from was informed that there wasn't a fix for the problem

- Lake Jackson, TX, USA

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