Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


definitely annoying
Crashes / Fires:
0 / 2
Injuries / Deaths:
0 / 0
Average Mileage:
45,178 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.

2004 GMC Sierra 2500 electrical problems

electrical problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2004 GMC Sierra 2500:

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

2004 GMC Sierra 2500 Owner Comments

problem #9

Jul 142011

Sierra 2500 8-cyl

  • 58,000 miles


Started with speedometer, then gas gauge, then everything else on the dashboard stopped working

- Dearborn Hts., MI, USA

problem #8

Mar 252013

Sierra 2500 8-cyl

  • 63,000 miles
The contact owns a 2004 GMC Sierra 2500. The contact stated that the instrument panel changed the display and language independently. The vehicle was not taken to the dealer. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure and current mileage was 63,000.

- Chesterfield , NJ, USA

problem #7

Aug 132011

Sierra 2500

  • 72,600 miles
Driving down/up a very curvy road and my speedometer became inaccurate. I had to use my gps the best I could to know how fast I was going, so that I wouldn't speed. The speedometer would move up and down but at the wrong speeds. In park at one point said 56mph, at another point 45-50mph. I took it to my local Chevy/GMC dealer to get it repaired. Waiting for the appropriate parts, but the parts are going to cost me over $400 + labor. This is a dangerous problem to have, especially where it affects all my gauges, not just my speedometer, mine just showed itself through the speedometer. This is a ridiculous cost to incur for something that shouldn't fail in the first place.

- La Grande, OR, USA

problem #6

Apr 122010

Sierra 2500

  • 60,000 miles


The contact owns a 2004 GMC Sierra 2500 hd. While the contact was driving between 55-60 mph, smoke expelled from the instrument panel and air vents. The vehicle was driven to the side of the roadway. The engine was turned off. The contact waited several minutes before restarting the engine. The vehicle resumed operation without the smoke failure. The vehicle had not been diagnosed or repaired for the malfunction. There was a recall on the 2006-2009 GMC Sierra models, the NHTSA campaign id number was 10V24000 (electrical system). The contact experienced the identical failures as mentioned in the recall defect. The failure mileage was approximately 60,000.

- Sacramento, CA, USA

problem #5

May 092004

Sierra 2500 8-cyl Diesel

  • 8,000 miles
Letter on behalf of constituent requesting assistance in difficulties dealing with GM regarding a manufacturer's defect in the electrical circuits in his 2004 GMC K2500 pickup truck. The consumer stated the vehicle stalled for no reason while driving 70 mph on the highway. He lost all electrical circuits, power steering and brakes. After 45 minutes, the vehicle restarted. The next day, the consumer took the vehicle to the dealer, where the mechanic found loose pins on the wiring harness connectors at C107 and C108. The mechanic stated he didn't believe that was the cause of the vehicle stalling, but they were loose. Since, the first failure, there have been 10 more failures. The consumer took the vehicle to another dealer where it has been since July 2, 2009 without a specific cause being found.

- Saint Jo, TX, USA

problem #4

Jun 282009

Sierra 2500

  • 8,000 miles
Vehicle dies from time to time, and will not start from 10 to 45 minutes later after the engine dies. When this happens there is no electrical to any of the starting circuits. The first failure happened on an interstate highway, speed set at 70 mph, in left lane. Power steering lost, power braking lost control of the vehicle was critical, median was wooded so had to steer dead vehicle to right lane and off highway. This condition has happened 11 times and the last two were in traffic, with the next to last being in a curve on a 4 lane undivided state highway and coming within inches of a rear end collision. The vehicle was found to have loose pins at connector, but the mechanic said he was unsure that this was the problem, this was at the first failure in 2004. The last time it died was in heavy traffic on dallas North tollway, resulting in dodging traffic. This vehicle is currently in a local GM dealership repair shop and has been there for close to one month, with no sure cause of failure. GM customer assistance center said that this was the only GMC K2500 in the world with this reported problem. This vehicle fails at various times and dates. Beginning on 05/09/04 to 06/28/09 and was placed in the repair shop on 07/02/09 this vehicle is unsafe due to loss of all power assist and difficult to brake and steer during this condition. During various repair shop visits "nothing is found" except the download shows that there are several failures.......

- Saint Jo, TX, USA

problem #3

Mar 142009

Sierra 2500

  • 39,000 miles


Speedometer registers 0-70mph when vehicle sitting at dead stop. Registers erratic when vehicle in motion. Sometimes reads correctly, other times completely wrong. Have disconnected battery to reset speed sensor. Nothing works.

- Ellisville, IL, USA

problem #2

Feb 092008

Sierra 2500 4WD 8-cyl

  • Automatic transmission
  • 63,000 miles
The contact owns a 2004 GMC Sierra 2500. The contact was warming up his vehicle with a portable compressor hooked up to the auxiliary power in the center of the dashboard to inflate a tire. He noticed smoke near the windshield on the driver's side. The contact unplugged the compressor, shut off the vehicle, opened the hood, and disconnected the battery. The front of the vehicle, underneath the dashboard and the cabin were engulfed in flames. The fire department extinguished the fire. There were no injuries. A police report was filed. The current and failure mileages were 63,000.

- Altamont, NY, USA

problem #1

Dec 012005

Sierra 2500 4WD 8-cyl

  • Automatic transmission
  • 35,000 miles
: the contact stated the speedometer went out on the vehicle. The service dealer offered to fix at a charge but the contact declined and expressed that the component should be recalled. Updated 9/13/2006 -

- Waleska, GA, USA

Not what you are looking for?