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2004 Chevrolet Trailblazer electrical NHTSA complaints: Electrical System

NHTSA — Electrical System Problems


really awful
Crashes / Fires:
2 / 7
Injuries / Deaths:
3 / 0
Average Mileage:
63,541 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 Chevrolet Trailblazer electrical problems

electrical problem

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2004 Chevrolet Trailblazer Owner Comments (Page 6 of 17)

« Read the previous 20 complaints

problem #234

Aug 012010


  • 70,000 miles


Instrument cluster, specifically the tachometer has gone out. From my research its just a matter of time before the rest of my gauges go out. Dealer had quoted me $600 dollars for replacement of cluster panel. This is a common problem and needs to be addressed.

- Geronimo , OK, USA

problem #233

Oct 202010

Trailblazer 4WD 6-cyl

  • 83,500 miles
Mode actuator failure.

- Menifee, CA, USA

problem #232

Jan 142009


  • 82,400 miles
The contact owns a 2004 Chevrolet Trailblazer. The contact stated that while driving 30 mph the fuel displayed a half tank of gasoline; however, the fuel tank was empty causing the vehicle to shut off. The contact stated that at times the entire instrument cluster would malfunction. The dealer stated that the entire instrument cluster needed to be replaced. The manufacturer was fully aware of the instrument cluster failure but had not released a recall. The failure mileage was 82,400.

- Newark, OH, USA

problem #231

Oct 052009


  • miles


The instrument panel doesn't work. The speedometer works when it wants to. It will read that I'm going 120 mph when I'm not, currently it's stuck all the way up!

- Carpentersville, IL, USA

problem #230

Oct 032010


  • 86,000 miles
The contact owns a 2004 Chevrolet Trailblazer. The contact stated that the gauges on the instrument panel stopped working intermittently. The dealer was not contacted. The manufacturer was sent and email but did not respond. The failure mileage was 86,000.

- Pueblo, CO, USA

problem #229

Jun 102010

Trailblazer 4WD 6-cyl

  • 55,000 miles
The tach and speedometer does not function properly on my 2004 Trailblazer. The speedometer occasionally works but 99% of the time tells me I'm going faster or slower than I am. I am currently using my gps, but as we all know with gps, it's not always available on moutains and it's not always 100% accurate so I basically guess how fast I am going when traveling through wv. I contacted GM dealer, no recalls that I am aware of but thousands of online post of this problem.

- Wintersville, OH, USA

problem #228

Jan 232011

Trailblazer 4WD 6-cyl

  • 108,321 miles


On 1/23/2011 I was on a trip, 77 miles from home, when my 2004 Chevy Trailblazer's instrument panel went crazy. I thought my engine would blow because the RPM gauge went off the charts, then wouldn't read anything. Then my speedometer did the same. I had no idea how fast I was going, on the interstate. I was worried, so I moved to the left lane, and stayed behind the slower traffic to be safe. When I got home, I stopped at my local Chevy dealership where I was told that almost every Trailblazer over 80,000 miles is having the same issues. The problem could be my instrument panel computer, or one of several bad modules. The can does not show any error code, so the cost to repair ranges from $600 to over $1500 depending on how long it takes your repair person to find the problem. After my diagnosis I was angry, I am tired of repairing items on this car. I went online to see if it was rare, or if anyone else had the problem, and an exact repair. On one website alone aboutautomobile.com I found over 1,300 Trailblazer owners with the same problem. After further research I have found almost 19,000 Trailblazer complaints about the same problem. I do believe that all Trailblazers will have this issue, and that GM should fix it, with a recall repair. I have sent complaints to GM, but no response has been given.

- Eau Claire, WI, USA

problem #227

Jan 102011

Trailblazer 4WD 6-cyl

  • 85,000 miles
My speedometer failed and reads anything it wants. You can be doing 25mph and it will read 110mph or you can be doing 60mph and it will register 45mph. There are a million complaints on the internet about GM speedometers and other instrument clusters failing. I think this is a safety concern and should be investigated. GM is just passing the buck when you ask for help. Just go to google and ask for GM instrument cluster failure and count the complaints. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Shelton, CT, USA

problem #226

Jan 272011


  • 61,000 miles
Instrument panel malfunctions. Speedometer and tachometer display inaccurate information. Speedometer will register 60 mph while at a red light. Tachometer does not go to zero even when engine is off.

- Waukesha, WI, USA

problem #225

Aug 012010


  • miles
I have seen across many websites that the instrument panel on the 2004 Chevrolet Trailblazers malfunction. Well, our vehicle is having the same issue. My mechanic says he has seen several similar problems and says it will cost about $600 to repair. He suggested contacting Chevy, but I have seen that Chevy is not interested in resolving the problem. I figured if they are getting enough complaints to the ntsb, maybe they will recall the equipment and I can get it properly repaired.

- Henderson, NV, USA

problem #224

Jul 172006

Trailblazer 4WD 6-cyl

  • 40,000 miles


GM is having an electrical issue on many 2004 vehicles resulting in gradual deterioration of instrument cluster performance. It starts with the speedometer failing, reading 120 mph while sitting at a red light. Then the fuel gauge, low fuel light will come on, then while driving to a fuel station it will slowly climb to 1/2 tank reading or more. Next is the tachometer, it will bounce from 2000 RPM to over 6000 RPM (red line) also while sitting at stop sign or parked in a parking space. Finally the oil and coolant temperature gauges read hot (past red line) at initial start up from sitting 12 hours in -3 degree weather. An online search has found numerous complaints of the same problem around the United States extending beyond the Trailblazer to other vehicles. This same issue was recalled on GM trucks but the other vehicles. The vehicle operator has no accurate idea of mph, RPM, oil or water temperature and battery charge. The average repair cost to replace the bad computer board is $500 to $1000.

- Mentor, OH, USA

problem #223

Sep 012010

Trailblazer 4WD 6-cyl

  • 45,000 miles
Instrument cluster keeps breaking.

- Cranston, RI, USA

problem #222

Aug 012005


  • 25,000 miles
Instrutment cluster does not work at times....door locks lock and unlock by theirselves at times...been happening for a long time...

- Forest, MS, USA

problem #221

Jan 162011

Trailblazer 4WD 6-cyl

  • 88,000 miles
The problem is on my 2004 Chevrolet Trailblazer. The entire dash gauges malfunction occasionally, from speedometer to battery gauge to oil pressure gauge to water temp gauge to RPM gauge. I am one of thousands of Trailblazer owners who have this problem not only in the usa, but around the world, just read the forum on edmunds.com and you will see. I usually temporarily fix this problem but turning the vehicle on and off until the gauges fully reset, but that puts a lot of strain on the starter. Please open an investigation to trigger a recall because Chevy dealers want us owners to shell out $100 to figure out the problem we already know and then want to gouge us for another $700-$1000 to fix. That is totally uncalled for, for a part on the vehicle which is vital to drivers, the instrument gauges.

- Tukwila, WA, USA

problem #220

Feb 012010


  • 60,000 miles
The contact owns a 2004 Chevrolet Trailblazer. The contact stated that the speedometer always displayed an improper reading. The improper readings can vary from 0 to 120 mph and all of the speeds between. The failure was not diagnosed by the dealer or a local mechanic. The failure mileage was 60,000 and the current mileage was 78,000.

- Mattoom, IL, USA

problem #219

Jun 162010


  • 81,000 miles
The contact owns a 2004 Chevrolet Trailblazer. While driving approximately 50 mph the oil pressure gauge and the tachometer on the instrument cluster stopped working properly. The vehicle had not been taken to the dealer for the failure. The failures were intermittent at first and recently stopped working. The vehicle was not repaired. The VIN was unavailable. The failure mileage was 81,000 and the current mileage was 83,000.

- Sherwood, AR, USA

problem #218

Dec 252010


  • 92,000 miles
Speedometer stuck/instrument panel on christmas day we were traveling to families house to celebrate the holidays. 1.5 hours into the trip, the speedometer went crazy and was at 90 when we were going 65. Pulled over and when we stopped it increased to 120 mph. Since we had another 3.5 hrs of our trip and it was unsure exactly what was wrong (since there were no dealership/service stations open), we turned around and went home. Nice christmas that we had, not. On Monday (the next day the dealership was open) I called to get an appt. And couldn't' get in until Tuesday. Went in Tuesday and of course charged me a diagnostic fee, when I could tell from searching the internet what was wrong (by now the speedometer was straight down between 0 and 120). 1.5 hrs later the dealership tells me it is the instrument panel (surprise, surprise) and that they would have to order since they have none in stock. It would take 4-5 business days. The earliest we're looking at getting is next week, now 10 days past the day it happened. I asked the dealership for a loaner and they offered me enterprise rental for $40/day (my expense). They could offer me nothing else, sending me on my way. Ok, Chevy...since this is a huge problem, the least you could do is stock dealerships with the panels, especially since this is a large dealership. It is not safe to be driving around with no working speedometer. Did I mention this is also my vacation week....nice, being stuck at home cause you have an inoperable vehicle. Chevy needs to step up to the plate and make this right with their costumers. I have been a faithful owner since 1994. A $415 part/plus labor is ridiculous when there have been so many complaints, you need to recall this.

- Woodbury, MN, USA

problem #217

Oct 252010

Trailblazer 4WD 6-cyl

  • 83,000 miles
Instrument panel gauges stopped working. Tachometer, speedometer, oil pressure and voltage gauge randomly stop working.

- Richmond, MN, USA

problem #216

Oct 152010


  • 60,000 miles
The contact owns a 2004 Chevrolet Trailblazer. While driving approximately 40 mph, the speedometer stopped functioning properly. The contact stated that the speedometer registered 115 mph when he was only driving 40 mph. The fuel and RPM gauges were also not functioning. The vehicle was taken to an authorized dealer who stated that the instrument cluster needed to be replaced. The vehicle had not been repaired. The failure mileage was approximately 60,000 and the current mileage was approximately 61,000.

- Visalia, CA, USA

problem #215

Dec 052010


  • 104,400 miles
2004 Chevy Trailblazer has instrument cluster failure...tachometer stuck at "maximum", and dealer reports all the gauges will be unreliable, shortly. Have read dozens of these complaints, but GM (who* saved) won't make it right?

- Cincinnati, OH, USA

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