NHTSA — Electrical System Problems

2006 Hummer H3 (Page 2 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 2 of 4)

« Read the previous 20 complaints

problem #54

Aug 252015


  • 118,000 miles


The contact owns a 2006 Hummer H3. While driving approximately 50 mph, the air conditioner was activated and began to power on and off independently. The contact also stated that there was an abnormal burning odor. The failure was recurring. The vehicle was not diagnosed or repaired. The approximate failure mileage was 118,000.

- Pineville, KY, USA

problem #53

Jul 162014

H3 6-cyl

  • 130,000 miles
The contact owns a 2006 Hummer H3. The contact stated that once the anti-theft was activated, it was unable to be deactivated using the key fob or manually. As a result, the engine locked, and the contact was unable to start the vehicle. The failure recurred numerous times. The vehicle was not diagnosed or repaired. The contact also stated that during rainy weather, water entered the vehicle from the drain holes on top of the vehicle. As a result, the interior of the vehicle and the air bag were wet. The failure recurred during the rainy weather conditions. The manufacturer was notified of the failure. The approximate failure mileage was 130,000. Updated 09/18/15 updated 09/22/15

- Laplata , MD, USA

problem #52

Aug 062015


  • 60,000 miles
GM has a security system called passlock that over time seems to fail and trips a "failure" and flashes a key symbol on the dash and disables starting your vehicle until it resets 10 minutes later. This occurs to my wife almsot 50% of the time she tries to start her vehicle. So far GM has come forward with a fix yet I've seen posts on Hummer forumns from hundreds of owners. This has many safety concerns as well as just being a general annoyance: 1) in las vegas we routinely see tempatures over 110F. If the system trips and you have to wait 10 minutes in that heat it can be deadly 2) missing appontments or being late to work because you vehicle intentionally is disabling itself it unacceptable 3) groceries cold/frozen stuck in the heat for 10 minutes waiting for a reset get ruined 4) my wife when alone is stuck waiting outside the vehicle in the heat or locking herself inside waiting for the system to reset can leave her exposed to criminal types

- Las Vegas, NV, USA

problem #51

Aug 302007


  • 1,200 miles


Since vehicle was delivered new, when the key is in the off position in the ignition switch, the key will 'turn itself on' with only the slightest 'bump' of the key or the steering wheel. This is a well known issue with all same vehicle owners. What with all the issues with other vehicle ignition matters this issue should have been noted and corrected years before now. I still own this vehicle.

- Madison, WI, USA

problem #50

May 062014

H3 5-cyl

  • 96,000 miles
The contact owns a 2006 Hummer H3. The contact stated that the key failed to release from the ignition after attempting to turn off the vehicle. The vehicle was taken to a dealer. The technician diagnosed that the tunnel ignition needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 96,000 and the current mileage was 103,000. Updated 09/09/14

- Mount Pleasant, MI, USA

problem #49

Sep 232013

H3 5-cyl

  • Automatic transmission
  • 126,000 miles
The contact owns a 2006 Hummer H3. The contact stated while attempting to turn the vehicle off, the key became lodged in the ignition. Also, the contact mentioned that the air bag warning light illuminated. The vehicle was not taken to a mechanic. The vehicle was not repaired. The manufacturer was made aware of the failure.. the failure mileage was 126,000 and the current mileage was 136,000. Updated 9/18/14

- Alma, MI, USA

problem #48

Jan 012008


  • 40,000 miles


The contact owns a 2006 Hummer H3. The contact stated that the fan motor and the on star system failed due to an electrical issue. The contact stated that the body wiring harness was replaced four times. However, the failure was not corrected. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 40,000 and the current mileage 154,000.

- Turlock , CA, USA

problem #47

Jun 022014

H3 5-cyl

  • 96,500 miles
Was traveling through a parking lot, noticed a glow from the corner of my eye, and something drip from under the passenger glovebox. There was a funny smell. I immediately stopped, and told my passenger to get out, and noticed a fire under the passenger glovebox. I tried pouring milk and juice on the fire to put it out under the dash but it didn't put the fire completely out. Bystanders helped with fire extinguishers but it didn't help much either, the fire moved through the firewall and was under the hood. The car quickly went up in flames and the fire department was called to put out the fire. Once the fire started, the doors didn't automatically unlock when I shut off the car. I was not able to get the back doors open since there is no key entry and it's all electronic. If I had children or passengers in the back seat when this happened, I would not have been able to get them out through the back doors - they would not open. The fire started under the passenger side glovebox seemed to be related to the resistor and wiring harness tied to the A/C. this should be a recall, and GM should recoup everyone who has had a total loss related to this incident. I will never buy american car again, this one was a mistake since I purchased it with constant issues and now this at less than 100K miles. Unbelievable! GM should be accountable for these incidents.

- Phoenix, AZ, USA

problem #46

Mar 242014


  • 65,000 miles
The contact owns a 2006 Hummer H3. The contact stated that the key continued to become stuck in the ignition and the instrument panel constantly illuminated. The failure was recurring for three months. The vehicle was taken to the dealer who stated that the ignition switch needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 65,000.

- Bloomington, MN, USA

problem #45

Jul 022013

H3 6-cyl

  • 66,104 miles
While driving at 45mph all systems shut off. No power steering nothing. The car would not restart. This happened multiple times with out warning.

- Seminole , FL, USA

problem #44

Mar 032014


  • 120,000 miles


I was traveling to work on a residential street at 5am when I noticed a smell and saw a glow coming from under my dashboard. When I could stop I noticed it was a fire. The fire did put itself out but the fire department was called and they advised me not to driver the vehicle. I did report this to GM and they advised me they could not help me with the repairs and there is currently not a recall.

- Hackettstown, NJ, USA

problem #43

Oct 012013

H3 5-cyl

  • 89,000 miles
Car has been spontaneously stalling while driving at high speeds. Engine cuts out, power brakes and steering fail, no radio, etc. Vehicle loses all power. It is terrifying. Has happened at least 3 dozen times now. Several visits to dealer could not pinpoint problem. Dealers unable to duplicate stalling, although it has happened to me regularly for months - ie, every time I drive the car (with my two babies) for an extended period on the highway.

- Cotuit, MA, USA

problem #42

Jan 272014


  • 108,000 miles
The contact owns a 2006 Hummer H3. The contact stated while driving in reverse she smelled a strong smoke odor and saw flames releasing from the glove compartment that spread to the engine. The fire department advised her that fire was caused by an electrical failure. The vehicle was destroyed. The manufacturer was made aware of the failure. The failure and current mileage were 108,000.

- Battle Creek , MI, USA

problem #41

Apr 152012

H3 5-cyl

  • 62,500 miles
Smelled burning smell intermittently, then one day blower just quit blowing any type air, did research found the problem to be the blower motor resistor, resistor and harness had melted so replaced it and worked fine but never really worked on the number 1 setting again. Has now happened again January 29, 2014, burning smell and just quit working again. Thankfully not expecting 0 degree temps again before I can get the parts and get it fixed again. Ordered the blower motor, wiring harness and resistor this time. With the number of complaints on this particular item I certainly hope they issue a recall before someone has a fatal incident.

- Lebanon, TN, USA

problem #40

Dec 302013

H3 5-cyl

  • 101,000 miles
I left my house to pickup my stepson from practice. While driving to the school I began to smell an odor of melting plastic, pulling into my stepson's school, I began to smell and see smoke. When I got closer to the parking area, sparks began to fall from underneath the right passenger dash. I immediately parked the car and ran around to the right passenger side and opened the door. I told the kids to move back and placed a coffee cup underneath to catch the flames dripping from under the dashboard which was quickly spreading and burning the carpet. I told my stepson to call the fire dept. I took his phone and got through to collin county. And they switched me to the local fire dept. Before the fire dept arrived, my car was engulfed in flames and a total loss. The fire report concurs where the fire began. I have searched online and found that this is a common reoccurring problem with Hummer and there are many reports similar to my experience. As a matter of fact, I have had to replaced that same harness about six months after I purchased the car because we smelled smoke and realized the very same part had burned. Many other Hummer owners have replaced this part multiple times do to this defective blower motor fan harness. The problem is Hummer knows the part is defective and the replacement is also defective. Also, that part is a dealer item. This problem needs to fixed with a national public recall before something terrible occurs. When my car caught on fire, I was in front of a school with children around and need I restate I was in the car when the fire began.

- Allen, TX, USA

problem #39

Dec 032013

H3 5-cyl

  • 122,000 miles
After I started my vehicle inside my garage I turned the heat on. The truck was still in park. After I turned on the heat I went into the house to get my coat. When I came back out to the truck to prepare to leave I noticed smoke inside the vehicle. I immediately turned the vehicle off and removed the keys. I opened all four doors to let the smoke out, the garage door was already open. The time from when I started my truck to when I saw the smoke was about 15 seconds. I let the truck sit for about an hour before I started looking for what could have caused the smoke. I remembered that the smoke didn't start until after I turned on the heater so I immediately checked all relevant fuses and relays which were good...none were blown. I then set about checking the fan, and as I removed the resistor from the fan housing under the dash and unplugged it I saw that it (the resistor) was burned at one of the blades.with some plastic around it and scorch marks at another blade. This prompted me to inspect the resistor female receptacle on the wiring harness. I began inspecting the receptacle. I found a burned up female blade receptacle. I don't know if the resistor shorted out or the wiring harness shorted out. I went to the auto parts store and bought another resistor because I needed heat in my vehicle so I plugged in and reinstalled the new resistor and started up the truck and observed the resistor. No smoke. I then turned on the heat (fan) and it wouldn't come on so I juggled the wiring harness and it came on. But now I cant select recirculate on the instrument panel. When I do all three lights on all the environmental control knobs just blink about 5 times then stop.. any assistance you can give me in this matter will be greatly appreciated. Thank you.

- Fort Wayne, IN, USA

problem #38

Dec 072013


  • 112,000 miles
The contact owns a 2006 Hummer H3. The contact stated that while driving approximately 35 mph, the dashboard caught on fire from the passenger's side of the heater. The vehicle was taken to the dealer, who diagnosed that the harness, resister fan motor, replay, heater hoses and baffle fan needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the problem. The approximate failure mileage was 112,000.

- Swartuzcreek, MI, USA

problem #37

Sep 202013

H3 5-cyl

  • 120,000 miles
Blower motor quit working. Took to dealer said needed motor wiring harness and resitor. They said the wiring harness caught fire and fused together. Cost of $300 to fix. Fire hazard.

- Lexington, KY, USA

problem #36

Jun 032013


  • 80,000 miles
The ventilation system stopping blowing air. I went online and did some research about this and found that many others had the same complaint and how to diagnose it. I opened up the area under the glove compartment and found that a resistor was burnt up. This appears it could have been a very dangerous situation if it had caught fire.

- Mount Joy, PA, USA

problem #35

Aug 252013


  • 91,000 miles
Blower motor for HVAC stopped working. A/C compressor kicks on, but no air flow or fan noise. Found resistor and wiring harness behind glove box burned out and melted. Part numbers affected: 12059296 and 10397098 resistor. This is a fire hazard!! come on, GM!!

- Pensacola, FL, USA

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