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. Notes: It would be ill-advised to blaze any trails with the 2004 Trailblazer. Its faulty fuel gauge could leave you stranded.


really awful
Crashes / Fires:
3 / 10
Injuries / Deaths:
5 / 0
Average Mileage:
65,344 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 12 of 19)

« Read the previous 20 complaints

problem #141

Oct 102009


  • 585,000 miles


Oct 10,2009 58500 mile on Trailblazer. Driving from work pass a police running 110 mph. I was only going about 50 mph. Then the tach started messing up too. Still ongoing problem. Can GM have a recall to fix all these complaints. They have fix other model doing the same thing.

- Cleveland, TN, USA

problem #140

Dec 292009


  • 90,100 miles
The tachometer needle points straight down and does not respond to engine speed. According to information online, the problem will progress to the other gauges inside the instrument panel of my vehicle. It will be a safety issue when the speedometer stops working. GM has made repairs for some models but not the Trailblazer.

- Liverpool, NY, USA

problem #139

Apr 112008


  • 56,000 miles
I own a 2004 Chevy Trailblazer that recently has began to give me problems with the instrument panel not reading correctly. My speedometer sits at 0 even when I'm doing 65 mph. My tach reads the same. Upon checking this out, I found that this is a ongoing problem with this particular vehicle that GM has no recall as of to date. Other have issues with their gas, voltmeters and oip pressure gauges. I find these issues not only annoying but unsafe while going down the freeway not knowing if your speed is correct. The average cost of repairs for this is about $500 to $700. There are many of these cases going on with this particular vehicle. A safety recall would be nice.

- Houston, TX, USA

problem #138

Dec 252009


  • 82,700 miles


2004 Chevy trail Blazer, speedometer, tachometer and gas gauge all failed while on the road. A speedometer is a must. I saw on the net where this is not an uncommon problem and the site said that GM has already won a law suit but has not issued a recall.

- Conroe, TX, USA

problem #137

Oct 202009


  • 98,000 miles
Instrument panel (speedometers, gas gauge and water temp gauge) on my 2004 Chevy Trailblazer lt-a is defective but Chevy will not recall and fix this problem even though they have recalled and repaired others models with this problem.

- Wadsworth, IL, USA

problem #136

Dec 192009


  • 80,000 miles
Headlights continually burn out. Replace every month! just replaced on 2 days ago and already out again! speedometer does not work.

- Rush City, MN, USA

problem #135

Dec 172009


  • 92,465 miles


While driving along my tachometer and speedometer on my 2004 Chevy Trailblazer dip below zero. I took it to my mechanic who said the electrical is shot in the dashboard area. My vehicle has to be running for 30 min or more for it to act up. If I leave cruise control on the needle stays, once cruise is turned off I'm doing (hopefully) 70 while my speedometer says I'm doing 20. Searching on the internet I'm not the first to complain about this. Has Chevy recalled the dashboard unit in the 2004 Trailblazer yet?

- Lansing, MI, USA

problem #134

Dec 152009


  • 65,527 miles
Speedometer on my 2004 Chevrolet Trailblazer no longer functions properly. Shows the vehicle is moving at 15 - 20 mph sitting in the garage. Have no idea how fast the vehicle is traveling when driving on the road. GM has recalled the full size vehicles (I.e. Tahoe/escalade) that have exhibited the same failure mode in the instrument cluster. The Trailblazer/Envoy chassis use the same cluster as the full size vehicles, no idea why they are not included in the recall.

- Portage, MI, USA

problem #133

Dec 032009


  • miles
-dashboard lights, speed-gas-RPM gauges stopped working. -I can't track my speed or see my gauges at night.

- Foley, AL, USA

problem #132

Dec 122009


  • 83,000 miles
My instrument cluster on my 2004 Chevrolet Trailblazer has stopped working.

- Frederic, WI, USA

problem #131

Dec 012008


  • 67,000 miles


My speedometer works when it wants too, sometimes it will not work for 3 to 5 days, and then it work fine again seems to do this when it gets cold outside.

- Franklin, ID, USA

problem #130

Dec 012009


  • 160,000 miles
Instrument panel/cluster stopped working in my 2004 Chevy Trailblazer. At first the gas gauge and tac stopped and then would work occasionally. Now they do not work at all and neither does the speedometer. Over the past week my entire panel, electronics, radio readout, digital readout, temp readout all go blank and then it will come on sometimes.

- Lakewood, CO, USA

problem #129

Nov 042009


  • 50,000 miles
Speedometer and tachometer stopped working at 50,000 miles.

- Chicago, IL, USA

problem #128

Jun 012009


  • 55,000 miles
2004 Chevrolet Trailblazer speedometer is consistently incorrect. The speedometer will frequently reset the point of zero mph. E.g. zero will be set at 50 mph so when the vehicle is actually traveling 20 mph, the speedometer will read 70 mph. The only way to reset the point of zero is to turn the vehicle off and start the car over and over again, lowering the point of zero by about 5 mph at each vehicle start.

- Brooklyn, NY, USA

problem #127

Dec 012009


  • 98,000 miles
Speedometer will not display accurate reading, additionally headlights flicker as if I am flipping from bright to dim - causing other drivers to become angry with me - when checked with GM they said it was a problem with the electrical system of my model but there was no recall. I have seen numerous other complaints from other owners with the same problem.

- Eatonton, GA, USA

problem #126

Nov 202009

Trailblazer 6-cyl

  • 25,750 miles
I purchase brand new 2004 Chevrolet Trailblazer 3.2L V6 as of right now it only has 25,800 original mils. And all the gauges on the instrument panel (oil pressure, speedometer, fuel, and tachometer has stop working while on the highway my god that was scary. Also, this has drain the battery had to replace it the cluster instrument panel is being replace it is coasting me $580. I think there should be a recall on this issue due to this can cause traffic accident. As I was at the Chevrolet dealership at the service center today there was another Trailblazer with the same problem.

- Willingboro, NJ, USA

problem #125

Feb 142009


  • 43,000 miles
The speedometer on my 2004 Chevrolet Trailblazer gives the incorrect speed most of the time. When I compare the speedometer reading to my gps, it will sometimes read anywhere from 10 to 40 miles per hour too high or too low. The temperature gauge is also malfunctioning. I had a similar problem with my 2003 Chevrolet Silverado and the instrument cluster was replaced under a recall. At this time, no recall has been issued by GM for my 2004 Chevrolet Trailblazer.

- Chino Hills, CA, USA

problem #124

Sep 222009


  • 45,000 miles
Why has Chevy not included the 2004 Trailblazer on their recall list when thousands of people around the country are posting problems with their instrument clusters? my entire panel goes in and out but mostly out. I never know if I need gas or how fast I am going. Some of the time every light that is built in the dash is on at the same time. This is a very serious problem that is occurring in many of Chevy's other vehicles yet they will not add the Trailblazer to the recall list. Please help the public in this very important safety issue. Thank you.

- Dumfries, VA, USA

problem #123

Nov 152009


  • 63,000 miles
Speedometer stopped working while driving on highway.

- W. Long Branch, NJ, USA

problem #122

Nov 052009


  • 117,650 miles
Speedometer not indicating correctly on 2004 Chevy Trailblazer. GM will not cover replacement cost of instrument cluster even though they have recalled full size pickups and SUVS for same problem. Many complaints for same problem registered on various internet sites. Cannot tell correct speed vehicle is traveling, and not confident in other system indicators on instrument panel.

- Benton, LA, USA

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