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2007 Hummer H3 electrical NHTSA complaints: Electrical System

NHTSA — Electrical System Problems

2007 Hummer H3 (Page 1 of 2)


hardly worth mentioning
Crashes / Fires:
0 / 6
Injuries / Deaths:
0 / 0
Average Mileage:
72,409 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 2)

problem #27

Nov 132013


  • 85,000 miles


The contact owns a 2007 Hummer H3. The contact stated that the vehicle failed to start and the security warning light illuminated. The vehicle was taken to an independent mechanic where the technician was unable to determine the failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 85,000.

- Keller, TX, USA

problem #26

Oct 242013


  • 100,000 miles
The contact owns a 2007 Hummer H3. The contact stated while attempting to start the vehicle, the pass lock disabling system light illuminated and prevented the vehicle from being started. The contact had to wait approximately 10 minutes for the vehicle to successfully restart. The vehicle was taken to the dealer for diagnostic testing. The technician was unable to duplicate or diagnose the failure. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 100,000.

- Albany , GA, USA

problem #25

Jul 092014


  • 79,000 miles
I have a 2007 H3 Hummer with 81000 miles. This past summer I got into my truck and put on my air conditioning on high. Nothing came out of the vents. Blower motor wouldn't even move. I did some research on the topic and it all lead to a burnt out blower motor resister. I had purchased a new one and replaced it to find out that there was a small fire in the plug from it getting to hot. This is a common problem with the H3. I talked to GM safety and they won't do anything and bout it because it's out of warranty due to age and miles. There is no reason for this not to be a recall issue. No blower motor means no defrost on your windshield. Due to cold winters in New York you need the defrost. Now my trucks blower motor works when it wants to due to faulty wire harness in truck. I have pictures of the plug and old resister. Thank you

- North Tonawanda, NY, USA

problem #24

Oct 112014


  • 85,400 miles


Air blower for air conditioning and heater stopped working because melted plastic on resistor also fried wiring and harness needed to be replaced.

- Alexandria, VA, USA

problem #23

Aug 262014


  • 64,000 miles
My son was driving his 2007 Hummer H3 when it caught on fire. It was an electrical fire started on the passenger side in the dash. He didn't know it was on fire until he got out of the car to go into a restaurant. He didn't even smell anything burning and had only been driving around 5 minutes. People were pointing at his car telling him it was on fire. The local fire department got to him in 3-4 minutes. The Hummer H3 was totaled out because of the fire. The car had approximately 64,000 miles on it and was in excellent condition.

- Prestonsburg, KY, USA

problem #22

Jul 012014


  • 60,000 miles
Just had my Hummer in 2 weeks ago at the GM dealership to have the ignition switch replaced. Had been dealing with it stranding me and my kids for 10 minute periods long enough. ( sometimes longer) while it was in there we also had to get the radiator replaced due to it being cracked. Now 2 weeks later my check engine light and traction light have come on. The traction light saying service sab system. After reading all the Hummer problems I can not believe that there was not a recall on both the ignition switch and radiator. The ignition switch being faulty put me and my kids in situations in places for long periods of time that were not safe and at times we were very cold since we can can have below zero weather in Colorado. The ignition not recognising the key causing the anti theft system to activate is recall issue and GM you should be taking responsibility for this!!

- Ault, CO, USA

problem #21

Jan 032011


  • 40,000 miles


The contact owns a 2007 Hummer H3. The contact stated that whenever the air conditioner or heater was turn on, burning wire fumes would emit into the vehicle. The vehicle was taken to the dealer. The technician diagnosed that resistor needed to be replaced. The vehicle was repaired but the failure recurred. The vehicle was taken back to the dealer who replaced the blower and the wire harness that had melted. The failure recurred. The manufacturer was not notified of the issue. The approximate failure mileage was 40,000.

- Crestview, FL, USA

problem #20

Jan 142014


  • 115,000 miles
Continuous problems with vehicle shutting down and or not starting with faulty passlock II system............. owners manual says to wait 10-15 min but keeps happinging intermitinly 4 times on 9-9-14 problem is worsening by the week

- Key Largo, FL, USA

problem #19

Aug 092014


  • 119,000 miles
The contact owns a 2007 Hummer H3. The contact stated while traveling approximately 25 mph, the vehicle stalled. The contact was not able to restart the vehicle. The vehicle was towed to an authorized dealer. The technician diagnosed that the PCM needed to be replaced. The vehicle was repaired. In addition, the key became lodged in the ignition causing the battery to drain. The vehicle was taken back to an authorized dealer who diagnosed that the shifter needed to be replaced. The manufacturer was notified of the failure. The approximate failure mileage was 119,000.

- Columbia, SC, USA

problem #18

Aug 092014


  • 119,400 miles
Was driving in a small town and the vehicle just lost all power with no warning. It cost me over $600 to get repaired and I'm thankful I was not on the highway going 60 or 70 and I'm thankful there was no vehicles behind me. Also the key won't come out of the ignition after I drive it for a while and this wears down my battery and I have to get a jump. Has there been any recalls or other complaints about these problems.

- Columbia, SC, USA

problem #17

Jul 102014


  • 145,000 miles


Fan blower resistor burnt up and melted wiring harness electrical seat button that controls position and heat turns on due to the side plastic seat molding that flexes when you sit in the seat.

- Fairview, TX, USA

problem #16

Jul 012010

H3 5-cyl

  • 26,000 miles
My car began show the passlock disabling system light and then failing to start. After starting, it would then show the air bag warning lights for a period that might be several minutes to several days before going out again. This cycle happened at random times disabling the auto without warning and in some dangerous situations. It is a well known and publicized problem that GM has chosen to ignore. I have solved the problem by having passlock disabled and ignoring the air bag warning light with the assumption it is a false warning. These recent events have me reconsidering that action, but the cost of having the problem rectified would be more than I could afford.

- Creedmoor, NC, USA

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

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