NHTSA — Electrical System Problems

2006 Hummer H3 (Page 4 of 4)


really awful
Crashes / Fires:
0 / 17
Injuries / Deaths:
1 / 0
Average Mileage:
71,845 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.

2006 Hummer H3 electrical problems

electrical problem

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2006 Hummer H3 Owner Comments (Page 4 of 4)

« Read the previous 20 complaints

problem #14

May 232011

H3 5-cyl

  • 48,484 miles


Overheated and melted resistor and wiring harness for the HVAC blower motor on a 2006 Hummer H3. This has happened to my vehicle and a friend of mine. Also many owners on the internet have had this same problem. It is so prevalent that many parts suppliers are advertising the parts for sale.

- Philadelphia, PA, USA

problem #13

May 092011

H3 5-cyl

  • 62,108 miles
Purchased 2006 H3 with 58K on it. At 61K the A/C blower would increase in speed for no reason then go back to its setting. At 62K it stopped blowing for no reason. Online search of H3 A/C blower issues gave me a place to start looking. Fuse was ok, checked resistor pack (pn 11221007.011) under dash and found pin "a" melted with sign of recent electrical fire due to shorting out. The orange connector on the harness was also melted. Further online research of this issue revealed that it is a "common occurrence". I called dealer and was told "they have never heard of it". I purchased resistor pack, connector, and pins then changed the component myself. Works good so far....

- Jackson, TN, USA

problem #12

Apr 152011


  • 79,000 miles
I have a 2006 Hummer H3, every few weeks or so the motor will turn over but will not start. I let it sit for a while and then it will start. I have taken it to both the dealer and another mechanic but neither can find anything wrong with it. About 6 months ago, I got a new battery thinking that would solve the issue but it has not.

- Gambrills, MD, USA

problem #11

Dec 212010


  • 84,000 miles


Heating/ ac fan blower harness burnt up. A very common problem on an Hummer H3/.

- Spring Grove, MN, USA

problem #10

Nov 052009


  • miles
I bought my Hummer H3 in August of 2009, used at a Chevy dealership that is a sister store of Chevy/Hummer dealership. My 2006 Hummer was fine until the cold weather hit. The first incident occurred around the first week of November. I was leaving to go to a friends house around 9:00pm I went outside however to turn my heat and my heated seat on, and about five minuets later I went out to my car to leave and my car was freezing with no fan motor on at all. After staring at my fuse box and reading the crappy owners manual for around and hour, we came to the conclusion that no fuses had been blown. The next day I drove my vehicle to the Chevy garage. The service man checked it out and said that he would take care of it. A week later I was driving back to pick up my Hummer up. On the way home from the dealership I got about five miles up the road and my car was filling up with smoke. I then returned my car to the dealer. A week later again I picked my car up, drove fine and get this I even had heat for about a month. Until it was around christmas and the same thing happened, dropped my car off and a week later picked it up. Two weeks later and it was around the middle of January, the same thing happened. I took the car to the garage yet again and the fixed the same thing that they have been fixing, no change and no investigation on the problem. The fifth time happened around five or six days after I picked my car up from the previous time getting fixed, only this time they brought it to their sister store the one with the Hummer certified technicians. I finally got my car back two weeks later. Then around the last of the cold weather it happened again it was the beginning of April. I got it back and had no problems, not even with my A/C, which I run all summer long. Now this November was the first time it happened again since last April, and it's going to be the last.

- Cortland, OH, USA

problem #9

Jan 112010


  • 67,355 miles
Heater A/C fan motor quit. The dealer repaired the link as he said it had gotten hot and burnt out. I can't find invoice at this time, but believe it to be around $90. Service done by whitehead Chevrolet of truth or consequences, nm. The service mgr said this was a common problem.

- Marceline, MO, USA

problem #8

Jul 212010


  • 36,786 miles


I own a 2006 Hummer H3. My fan blower quit working. Upon investigation I found the blower motor resistor and the connector to be welded together. I had to replace both items because they were melted together. This has to be a fire hazard and after I googled it to figure out how to fix it I was shocked at the number of people who have had the same problem. I can not believe this has not been a recall issue.

- Ocala, FL, USA

problem #7

May 292010


  • miles
On May 29 2010 I went to the store around afternoon and came back from the store I started my Hummer 2006 H3 the car started and I look at the indash and no light came on and I drive around the parking lot to see if the in dash light come on and I park the car and turn off my ignition and turn it back on still the same no light on my indash and I was scare to drive it out on the road because I don't see how fast I was running or the car might die out on me when im driving and I was thinking to myself this is very dangerous because this could cause an accident and I was mad I drove home and about 3 or 4 minute later the light came back on when I was driving and I was wonder what could cause this to happen or did my electric wire short circuit and my truck is 4 year old and barely driving it. So could you please investigate on this, because it happen to me it could happen to other Hummer H3 owner. So please act now so no one get hurt and to prevent from happening and last month my two door on the passenger side front and back has a squeaky noise everytime I open the front and back passenger it make to much noise and I wonder is this how Hummer make there quality truck like this and my truck is only 4 year old and still brand new.

- Houston, TX, USA

problem #6

Aug 272008


  • 50,000 miles
Fire started in back of my glove box in my Hummer H3.

- Bloomington, IL, USA

problem #5

Nov 012006

H3 4WD 5-cyl

  • Automatic transmission
  • 13,000 miles
The contact owns a 2006 Hummer H3. While driving at 70 mph under normal conditions the oil and air bag warning indicator lights turned on and the vehicle began to decelerate. The contact turned the ignition off, and on within 5 minutes, drove the vehicle and failure didn┐T reappear. The dealer was unable to diagnose the failure. Also, the dealer stated that it could be an electrical failure but they couldn┐T confirm it. The current and failure mileage were both 13,000.

- Santa Calirta, CA, USA

problem #4

Nov 292006

H3 4WD

  • Automatic transmission
  • 11,279 miles


Vehicle locked up while I was driving - unable to start and had to have towed to dealership. Serious electrical problems for the 2nd time.

- Carlisle, OH, USA

problem #3

Oct 182006

H3 4WD

  • Automatic transmission
  • 9,825 miles
While driving vehicle locked up and shut down - could not restart and had to have the vehicle towed to the dealer.

- Carlisle, OH, USA

problem #2

Jan 012006

H3 5-cyl

  • Automatic transmission
  • 10,000 miles
Vehicle had an engine miss fire that required replacement of the head. Miss. Returned shortly after repairs. Dealer said there was no miss. Vehicle filled up with water during a rainstorm. All interior had to be removed and dried out. Electrical problems occurred that required four batteries over 12 months. Dealer stated it was my problem, because I had a small inverter for computer. Sold the vehicle to the Hummer dealer at a loss of $15,000. Hummer refused any assistance after first stating they would.

- Westfield, IN, USA

problem #1

May 162006

H3 4WD 5-cyl

  • Automatic transmission
  • 3,800 miles
: the contact stated while driving on 5 separate occasions the message center read, power reduced and asc failure. The vehicle would not exceed 35 mph during the power failures. The vehicle was pulled off the road without incident and towed to the dealer on 3 occasions. The other 2 occasions the vehicle was driven to the dealer. It was determined the computer that controls all electrical functions failed; however this did not correct the problem. The manufacturer was alerted.

- Oxford, MI, USA

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