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.

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


hardly worth mentioning
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
98,086 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 accessories - exterior problems

accessories - exterior problem

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2004 Chevrolet Trailblazer Owner Comments

problem #7

Jul 302014

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 192,000 miles


TL * the contact owns a 2004 Chevrolet Trailblazer. The contact stated that the power window and lock on the driver side door were inoperable. The vehicle was taken to the dealer for diagnostic testing, but was not repaired. The VIN was excluded from NHTSA campaign number: 13V248000 (electrical system, visibility). The manufacturer was not notified. The failure mileage was 192,000. Updated 12/09/14

- Cincinnati, OH, USA

problem #6

Sep 152010

Trailblazer 6-cyl

  • 75,000 miles
I purchased my 2004 Trailblazer of the original owner with 35000 miles on the speedometer. At 75000 miles the door locks started clicking as if locking and unlocking. I took it to a Chevy dealer and the mechanic said it was definitely strange and I would need to make an appointment to have them look at it. Just him saying definitely strange to my ears said expensive. My sister had the same vehicle different color and hers had the same problem. Now how strange is that? I broke the appointment and got used to the clicking. Sometimes it would stop for a week or so and click some more. The clicking was loud as if you could imagine the sound when you lock all the doors with one click. Click click click click every half minute or so. Then the tachometer went nuts. Sometimes it worked sometimes it didn't. same with the gas gage, oil pressure, temp gage and battery. Once the wipers wouldn't come on while being caught in a rain storm. The started working again about 15 miles later. Now the electric door locks are acting up setting off the alarm. I no longer lock the doors due to the alarm going off for no reason. Deactivating the alarm can be a chore as pushing the correct button to shut it up only works after pushing it a few times. We have checked for pinched wires and checked the fuses to no avail. Without these electrical problems I would be one happy customer!

- Vevay, IN, USA

problem #5

May 182013

Trailblazer 4WD 6-cyl

  • 157,000 miles
The contact owns a 2004 Chevrolet Trailblazer. The contact was driving 30 mph when another driver informed her that the vehicle was on fire. The contact moved off the roadway and attempted to exit the vehicle but the doors would not unlock. The door finally opened after several attempts of engaging the automatic door lock function. The police and fire department was notified. The cause of the failure was an electrical malfunction. The vehicle was destroyed. The manufacturer was not notified of the failure. The failure mileage was 157,000....updated 07-10-13 updated 07/16/2013

- Cincinnati, OH, USA

problem #4

Sep 182009


  • 74,000 miles


In September 2009, my 2004 Trailblazer started going haywire! it lost all power (while going down the interstate), the power/cigarette outlets stopped working, the doors started locking themselves (sometimes with the keys in the ignition), the radio would go loud or stop working, my speedometer went nuts (like saying that I was doing 65mph, when I was at a complete stop or 120mph down the hwy), the service engine soon light would go on and off, and my heater will not blow out the vents in the dash. We have taken it to a mechanic. He tried everything from replacing the battery, fuel filter, and spark plugs. He even hooked it up to his scanner (which showed that there was nothing wrong with the car) all this and $700 later I still have the same problems. Now I'm told that the electrical panel will need to be replaced at a cost around $500-$900!! if you look at you see that there are many more people like me with the same car and the same problems. This is a huge safety long will it be before someone pushes Chevy into doing a recall" does someone have to be killed or kill someone else for this to happen" I was so glad to google car complaints and find that it wasn't just me that was having so many problems with this Trailblazer.

- Twin Bridges, MT, USA

problem #3

Jun 182009

Trailblazer 6-cyl

  • Automatic transmission
  • 41,600 miles
The contact owns a 2004 Chevrolet Trailblazer. The contact parked the vehicle, but could not exit because the lock system failed. In addition, the speedometer remains at 30 mph. The contact found other complaints from consumers who were experiencing the same issues. The instrumental panel lights remain illuminated and fail to dim. The gauges also do not work. The dealer stated thta it would cost between $70-$85 to diagnose the vehicle. The vehicle has not been repaired. The failure and current mileages were 41,600. Updated 07/10/09. Updated 07/10/09.

- Saint Louis, MO, USA

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problem #2

Mar 102009


  • 130,000 miles
Driving on dry pavement, clear day. Took freeway offramp, when I reached 40mph, the brakes locked up, went past stop sign into other highway missing other vehicle passing in front of offramp. Happened twice at same speed, brakes lock up, and I pass through the stop sign. Loud grinding noise coming from wheel well area, brakes recently changed about 3 months ago, noise occurs at 25-30 mph, sounds like dragging something underneath. Service man checked, nothing visible. Has occurred 5 times in less than 2 months. Interior lights dim on vehicle then brighten constantly. Door ajar light constantly coming on, back hatch window constantly opening on own driving down road. Instrument panel knobs, panel itself and window and door buttons on doors extremely hot to touch. Various lights on instrument panel quit working and then resume on their own. Reported tach/odometer not working already. Both units registering offline while driving. Where are the fixes to these problems?

- Granger, WA, USA

problem #1

Dec 232006

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 17,000 miles
- the contact has a 2004 Chevrolet Trailblazer with 17000 miles on the odometer, the liftgate does not latch. The contact stated that it first happened on 12-23-06 and it has not worked since. The contact said that she has tried the power lock, and the key fob/remote and it still did not lock.

- Buffalo, NY, USA

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