2008 Hummer H3 electrical NHTSA complaints: Electrical System

NHTSA — Electrical System Problems


really awful
Crashes / Fires:
1 / 2
Injuries / Deaths:
0 / 0
Average Mileage:
67,284 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.

2008 Hummer H3 electrical problems

electrical problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2008 Hummer H3:

Unsubscribe any time. We don't sell/share your email.

2008 Hummer H3 Owner Comments

problem #20

Jan 142017


  • 103 miles


It started one morning I went to start my vehicle and it wouldn't start I was getting a (no crank no start).I tested the battery that had been replaced only months before and the battery was fine, I then proceeded to check my ignition and starter fueses and relays all were replaced. I noticed I had a dash ligh on that was a car symbol not ever dealing with it I talked to a garage and was told it was the anti theft pass lock system and that I could check by letting the key on for 10 mins then when the light goes out start it worked as they said. They suggested I replace the lock assemble which included the lock housing, key cyclinder, and pass lock module.I got the parts from my local dealer and had them replaced and re learned car worked fine no light any more for about 4 months. At that time I was driving with my family down the highway and the vehicle shut off during driving I got it to the side of the road an immediately turned my key off and tried starting it again when I did so I noticed that stupid red dash light shaped like a car waited the 10 mins as did before and started right up took it right home now the same thing but it just blinks and will not go off anymore. This is a very serious problem not starting somewhere is one thing that's bad enough but to have it shut off completely when driving is scary. I have maintained this vehicle regularly and I'm finding out that their are multiply people having the same issue with their vehicles not only Hummer's but most GM products.

- Lock Haven, PA, USA

problem #19

Dec 132016


  • 175,000 miles
I have been having security issues with this vehicle for the last 2 years. Keeps me stranded at times until the system resets itself. My hood is rattling and am afraid one day it will come off. Don't want to trade it in but may not have a choice. If companies are aware of these problems they need to fix them before someone gets killed or seriously injured. It is a total shame that consumers have to deal with all these problems and by the way paying high car or truck notes a month and having to deal with extra problems we don't need or want. Fix everything right the first time and there won't be so many complaints coming your way. I have taken my vehicle in more than once for recalls on this vehicle. Please do something about these problems before someone gets sued. Thank you for your time.

- Monahans, TX, USA

problem #18

Apr 302016


  • 70,500 miles
The contact owns a 2008 Hummer H3. While driving approximately 27 mph, the ABS, fog, traction, and tpm indicators illuminated. The vehicle was taken to a dealer who stated that more time was needed to diagnose the failure. The contact did not want to pay the diagnostic fee without checking to see if the vehicle was included in a recall. The failure recurred, but the vehicle was not diagnosed. The manufacturer was made aware of the failure and stated that there was a recall. The contact stated that NHTSA campaign number: 15V421000 (visibility) did not address the failure. The vehicle was not repaired. The failure mileage was 70,500.

- Flint, MI, USA

problem #17

Aug 072016


  • 75,000 miles


Intermittently the vehicles passlock security system disables the starter leaving the driver and passengers stranded for 10 minutes while the system resets itself and reengages the starter. This issues seems to occur at random, I have not been able to duplicate the problem at will. An internet search on the passlock security issues proves that this is a common problem with the H3.

- Spring, TX, USA

problem #16

Jun 032016


  • 107,000 miles
The security lock system on my Hummer H3 intermittently flashes during start causing the vehicle to not crank. Normally I have to wait 10 to 20 minutes for the system to reset itself and she starts right up, but today it's been 8 hours. Finally I had to call for a tow to the GM dealership. We got lucky today. At 10am my wife thought she was going into labor, we get to the truck and no start. Just a flashing security lock symbol flashing at me. Ended up using her car. This is definitely a safety concern, what if her water had broke or my son was needing medical attention. I know GM knows of this defect because I have read thousands of complaints about this exact problem online. They will not fix it unless made to.

- Orlando, FL, USA

problem #15

Jun 132013


  • 46,000 miles
The air conditioning began working intermittently two years ago. About a year ago it stopped completely. The issue is related to overheating or melting of an electrical component (ours has melted and is visible) and I received a recall notice over a month ago but the part is still unavailable to do the repair. I live in Florida where the temperatures are high most of the year so I have been deprived of full use of my vehicle for almost two years. I believe GM needs to do better to get these issues resolved as our loss of use is not in any other means being compensated. This is frustrating and disappointing and we need immediate resolution. It is a frequent, known, recurring and costly issue.

- Lake Monroe, FL, USA

problem #14

Oct 072015


  • 50,000 miles


I own a 2008 Hummer H3 and for the past 4 1/2 years I have been dealing with issues related to engine not starting when you first get in. If you wait exactly 10 minutes, it starts just fine. I have had dealerships and repair shops look at the vehicle and no one seems to know exactly what is causing this intermitant problem. The company that installed my alarm system thought it could be the ignition and/or the passlock. Apparently, the passlock is what thinks your car is being stolen and shuts it down for 10 minutes. However, they are each $600 and no guarantee that either is the problem and the car is out of warranty. After reading some Hummer forum this appears to be a global problem with all Hummer from 2006 to 2010 and GM refuses to admit they have a serious problem and will not submit a recall for the faulty ignition switch.

- Plano, TX, USA

problem #13

Oct 092014


  • 90,851 miles
The contact owns a 2008 Hummer H3. The contact stated that the air conditioning and heating system would independently shut off. The vehicle was taken to the dealer where it was diagnosed that the blower motor and the wire harness needed to be replaced. The vehicle was repaired however, months later, the failure recurred. The vehicle was taken back to the dealer where it was informed that the ac could not be charged and the radiator the ac alternator and the battery needed to be repaired. The vehicle was repaired however a month later then the vehicle began to over heat and fail to start. The vehicle was taken back to the dealer who, stated the ignition switch needed to be replaced. In addition, the contact stated that there was a burning odor emitting from the ac ventilation system. The vehicle was taken again to the dealer who stated the wire harness was melted as a result the blower motor and wire harness needed to be replaced. The vehicle was repaired but the failure persisted. The contact received notification of NHTSA campaign number: 15V421000 (visibility). The manufacturer had not yet determine a solution for the failure. The failure mileage was 90,851.

- Tracy , CA, USA

problem #12

Aug 032015


  • miles
The contact owns a 2008 Hummer H3. The contact received notification of NHTSA campaign number: 15V421000 (electrical system); 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 made aware of the issue. The contact had not experienced a failure.

- Fort Lauderdale, FL, USA

problem #11

Aug 012012


  • miles
An odor smell of baked, cooked, melted, chared, scorched, and roasted electrical wires and have had to twice replace the General Motors, harness, 25949869, and acdelco 15-80647 GM original equipment heating and air conditioning blower motor resistor, and once have had to replace new the heater blower motor with fan cage.

- Alamo, TX, USA

problem #10

Oct 012014


  • 81,000 miles


The contact owns a 2008 Hummer H3. While driving at approximately 5 mph during a rain storm, the windshield wipers became inoperable without warning. The contact pulled over and powered the vehicle off and back on. When the vehicle was restarted, the windshield wipers failed to work. The vehicle was taken to the dealer where it was diagnosed that the body control module failed and needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 81,000.

- Cary, NC, USA

problem #9

Jul 052014


  • 103,000 miles
2008 Hummer H3 alpha with factory tow package trailer routed between sharp body panel and bumper causing vehicle motion to rub the wires. The exposed wires short to the body and cause high current melting interior wiring. This problem has been imntermittent for about 1 year and have had GM dealer troubleshoot the failure of trailer brakes and lights with no solution. I discovered problem by removing rear bumper. Problem can be avoided by shielding wiring and smoothing the sharp metal edges it crosses.

- Manchester, NH, USA

problem #8

Jun 172014


  • 85,678 miles
As many have explained before, my blower motor all of a sudden went out I started to read online what it might be and found that everyone complained of resistor harness wire burning out or the plastic melting. And just as everyone said I pulled out the harness and it was burn completely out. GM this really needs to be addressed, how many people need complain, or something possibly happen to someone before your company takes action, with all the recalls going on with your company you would think you guys would learn.

- Spring, TX, USA

problem #7

May 142014

H3 8-cyl

  • 71,000 miles
I was driving along and there was smoke coming from below passenger side under the glove box. Pull over and saw it was a resistor with two screws. It was burnt, I unplugged and drove home. Then searched internet and there are hundreds of people with the same problem. This needs to be a recall asap, before someone dies in a fire.

- Elk Grove, CA, USA

problem #6

Nov 282013


  • 52,000 miles
The contact owns a 2008 Hummer H3. The contact stated that the engine would not start. The contact indicated that the problem was intermittent and that the security sensor light illuminated. The failure mileage was 52,000.

- Pittsburg, PA, USA

problem #5

Apr 012010


  • 38,000 miles
The contact owns a 2008 Hummer H3. The contact stated while attempting to turn the vehicle off the key became stuck inside the ignition switch and the contact was unable to turn the vehicle off. The vehicle was taken to the dealer but the defect could not be duplicated and no repairs were performed. The contact stated that the defect continued to occur. The manufacturer was not notified of the failure. The failure mileage was 38,000.

- Hawthorne , NY, USA

problem #4

Mar 032014

H3 5-cyl

  • 97,342 miles
I have the same issue as hundreds of others with GM's faulty blower motor resistor. The blower motor resistor and wiring harness have failed 2 times now. Melting to each other. Luckily no fire, yet. These are expensive vehicles, and GM should own up to the design flaw and issue a recall, and or offer a repair kit that truly fixes the flaw that owners can install as the location is fairly easy to get to and work on it. The purchasers of these vehicles should not have to put up with this quality flaw, and risk themselves, family and friends. GM - do the right thing and avoid major lawsuits.

- Big Lake, MN, USA

problem #3

Apr 052013

H3 5-cyl

  • 62,200 miles
Radiator end tank ruptured releasing coolant on everything under the hood and getting on the windshield. Research of this finds that there is a defect in the design of the factory radiator which GM refuses to take action on. Had this happened at higher speeds, this could have been a much worse situation.

- Louisville, KY, USA

problem #2

Oct 152012

H3 5-cyl

  • 78,000 miles
I looked on the internet to find out why my heater blower was not working and there were lots of complaints about the wiring harness and resistor burning out. I checked mine and sure enough mine was burnt on the wiring harness all the way through the plastic. GM needs to figure out why it would cause it to malfunction like that cause it could cause a fire.

- Redvale, CO, USA

problem #1

Aug 092012

H3 5-cyl

  • 63,000 miles
Smell of burning plastic and the A/C stopped blowing. The A/C works on the lower speeds. Burnt/melted plug on the A/C resistor plug. From what I have found online this is a very common problem with H3's at about 40-60K miles. Why wont GM do a recall if this is a daily problem with H3 owners. How many H3's have caught fire from this " it was over a 110 degrees when mine went out. What if I had young child or an elderly person in the vehicle at that temp "

- Agoura Hills, CA, USA

Not what you are looking for?