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: The 2002-2007 Chevrolet Trailblazer is known for many things, but perhaps it is most famous for its faulty fuel gauge.

This gauge flip-flops more than a politician during election season. Some report that the gauge says "empty" after a fill-up, while others report the gauge says "full" when they're running on fumes. Either way, there's one thing everyone seems to agree on: the darn thing is just wrong.

Following hundreds of complaints and a few accidents allegedly caused by the malfunction, the National Highway Traffic Safety Administration (NHTSA) opened an investigation into the issue in May 2011. Unfortunately for frustrated owners, no recall has been announced.


really awful
Crashes / Fires:
4 / 9
Injuries / Deaths:
3 / 0
Average Mileage:
61,926 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.

2005 Chevrolet Trailblazer electrical problems

electrical problem

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2005 Chevrolet Trailblazer Owner Comments (Page 6 of 20)

« Read the previous 20 complaints

problem #298

Mar 102012


  • 96,000 miles


My speedometer started to go crazy jumping around while on the highway it started off reading fine then all of the sudden it read that I was going 120mph by the time I got home it did not work at all had to guess my speed then about a two weeks later it started to work again same day it went haywire again and now it does not work at all. Also I have been having problems with battery draining I have been to several places to get it check out all that can be found out is that something is staying on while the car is in the off position. There are times when I have to jump my car several times in a day and there are times when I can go days, weeks without the problem just never know when it is going to happen.

- Springfield,Il, IL, USA

problem #297

Mar 112013

Trailblazer 6-cyl

  • 92,600 miles
Vehicle would not start. Had it towed to mechanic shop. Battery was completely dead, though the battery was only 1 year old and was a very expensive ac delco 6 yr battery. Mechanic changed the alternator and the battery and everything tested the same. Put old battery and alternator back in, as battery he charged was holding the charge ok. Could not locate source of problem. The next day, the dash lights were not working, nor the interior lights. As I drove along the highway, the dashlights blinked and then stayed on. Ceiling light works intermittently. The alternator shows that it is charging very hard. According to other incidents reported on the internet, there is an electrical problem in the 2005 Trailblazer that may or may not be associated with the passlock anti-theft system, but in any case, shows slow leak of electrical current that slowly drains the battery 24/7, until the battery is dead. Why is no recall issued making General Motors responsible to find and fix this problem without cost to the owners of 2005 Trailblazers. I spent $130 at the mechanic shop and they could not find what the problem is, much less fix it. My vehicle is parked in a garage most of the time, and there is no reason for this malfunction other than faulty GM part somewhere. Our local Chevy dealer told me they think the problem is related to the passlock anti-theft system but they have never been able to nail it down. They reference a vehicle which they kept for two weeks for diagnosis of a "won't start" complaint, and the vehicle started some days and not other days with no pattern to the malfunction.

- Pierceton, IN, USA

problem #296

Mar 012013

Trailblazer 6-cyl

  • 113,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated that while driving at various speeds, the speedometer failed. The contact was unable to see current vehicle speed. The vehicle was taken to the dealer where it was found that the instrument cluster had failed and needed to be replaced. The manufacturer was contacted. The failure and current mileages were approximately 113,000.

- Denton, TX, USA

problem #295

Feb 052013


  • 127,000 miles


First my speed gauge started going crazy reading different everytime I crank the vehicle then the alternator gauge started reading off the chart my highest number on the gauge is 19 it is reading at the 210 on the temp gauge that is how far past the 19 it is today however it may be different later I love Chevy my family are all Chevy people and it is sad that Chevy has forgotten about there customers I am in law school not long left when I am finished I am filing a suit for all the people who own this vehicle Chevy needs to step up an take responsibility it is not a fluke that this many people are having the same problems and it is ridiculous that Chevy has dropped so low that they expect us to just eat these problem well quite frankly I am full up of the bs I am also writing my local paper and news station and I will bug them until they run an article and air these problems an some other problems these vehicles are having Chevy won't fix our problems they won't listen to the ones whom keep them in business well maybe they will listen to a judge step up Chevy it is crazy that you won't take responsibility for malfunctioning parts you will see your day in court. ## VIN failed ##

- Brooklyn , MS, USA

problem #294

Mar 072011

Trailblazer 6-cyl

  • 112,539 miles
The oil pressure gauge stopped working. Second incident at a later date, the speedometer stopped working correctly, third incident at a different time, the fuel gauge reads incorrectly, fourth incident, the battery gauge is working sporadically. Most of the time the gauges do not function properly or not at all.

- Harrison, AR, USA

problem #293

Sep 222004


  • 122,000 miles
2005 cheverlot Trailblazer has had an issue since I purchased it in 2004 with stalling out. However over the last 4 years I have had an issue of no start... everything has been replaced by the dealer ignition switch, alternator, starter, exhaust, etc.... last result was the PCM powertrain module supposedly the brains of the car. However the same day it stalled again, most recently my dealership took it for a week and said they could not reduplicate issue. So there again I am at the same place where the car will be fine for weeks then do a no start untill after serveral attempts and smell of gas finally the car will start. Chevrelot Trailblazer have known this problem for awhile has done nothing about it...resolve the issue and do a recall spent over $10,000 on just maintenance.. what is Chevy going to do about this issue? ## VIN failed ##

- Newark, NJ, USA

problem #292

Feb 102013

Trailblazer 6-cyl

  • 60,000 miles


The fuel gauge reads empty when there is plenty of gas in the tank. It sometimes read full when there is little gas left.

- Surprise, AZ, USA

problem #291

Sep 082011


  • 42,000 miles
In 2007 I paid off my vehicle and now became the proud owner of my truck. In 2009, I noticed some problems with my truck. First, the gas gauge would say "F" full, but really it was on "E" empty. Then the mileage gauge " I can be on the expressway going as fast as the other cars, but my car reads 20 mph. This is crazy!!!! I called at 800-number for GMC and was informed that there was no recalls or any others calls for the 2005 Trailblazer, which I knew was a huge lie!!!! I decided to go on line and google the make and model of my car. Wow? guesses what I seen" there were over 41,000 people who have the same problems that I had for their 2005 Trailblazer. Again, the problem with my truck has gotten worst. In 2010, I called again and was informed that their still wasn't any other calls or concerns with my truck and that I should take it to an authorize Chevy dealership. Well, I did... in 2011, I called again.. same script same story!!! I received a letter for a emission test for my car. Well, let me tell you when I took my vehicle up to the emission testing it failed!!!. I got an estimate cost of $ 1900, plus they found 3 additional codes.. well, I got a 2008 Chevy Impala. I went from paying no car note, to $381 a month note. The week of September 4th, 2011.. I receive a letter from Chevrolet addressing the issues with the 2005 Chevy Trailblazers, and offering 50% on repairs for the same problems that I have been calling on for 2 years. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Chicago, IN, USA

problem #290

Dec 112012


  • 108,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated that the vehicle was parked when she noticed that the driver's side window was opened mid-way independently. Upon further inspection, she found that the components were melted. The vehicle was taken to a dealer for diagnosis and she was informed that both a fuse and the master switch would need to be replaced. The manufacturer was not notified of the failure. The VIN was unavailable. The failure and current mileage was 108,000.

- Jeffersonville, IN, USA

problem #289

Aug 092012

Trailblazer 6-cyl

  • 65,000 miles
Filled up truck and gas gauge still said it was empty. Gas gauge is faulty and no longer works. Have to keep track of mileage now so I don't run out of gas. I also read that GM is willing to cover half the cost and were suppose to send a letter stating that. Never received anything. Not at all impressed with GM and will find it hard to stay a loyal customer.

- Sheboygan, WI, USA

problem #288

Dec 102012


  • 118,852 miles


I was traveling at approximately 55mph and the speedometer was indicating 120+mph. The speedometer has been sticking and indicating incorrect speed for about a month. Normally when the engine is cold and the outside temperature is cold. When driving and the vehicle warms up, the speedometer eventually corrects itself after stopping at a light and shutting the engine off and back on.

- Elizabethtown, KY, USA

problem #287

Nov 142012


  • 58,000 miles
Speedometer show 120 mphs when driving 40 mphs.

- Bryon , IL, USA

problem #286

Jan 032012

Trailblazer 6-cyl

  • miles
My speedometer displays an extremely inaccurate reading, or doesn't work at all.

- Iota, LA, USA

problem #285

Aug 202009

Trailblazer 6-cyl

  • 62,000 miles
Is no longer working broken.

- Greenville, SC, USA

problem #284

Apr 012012


  • 78,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated while trying to turn the vehicle off the key became seized in the ignition. The contact mentioned that it took several attempts to remove the key from the ignition. The vehicle was taken to an independent mechanic. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 78,000 and the current mileage was 84,000. The VIN was not available.

- Milwauke, WI, USA

problem #283

May 172011

Trailblazer 6-cyl

  • 140,000 miles
The blower/fan on the air conditioner/heater stopped working. It first began with #4 and #5 on the fan selector switch not working, but then it stopped altogether. After doing research this blower motor problem is very popular amongst these vehicles. Also, the fuel gauge on the dash hasn't worked in about 3 years. After doing some research, it appears that this is due to the fuel sensor in the fuel tank. Again, this is very common occurrence within the Trailblazer community. I was given an estimate of $774 for the blower motor to be fixed and $600 for the fuel gauge to be fixed.

- Soddy Daisy, TN, USA

problem #282

Aug 082012


  • 132,000 miles
Door locks repeatedly locked and unlocked, then cascading failures, anti-lock light, engine light, other warning lights. Engine started to run rough and would not make power, engine quit. Note transmission gear indicator read incorrectly. Disconnected battery, and reconnected, engine started got me home. Three occurrences that the engine just quits. It will restart after a few minutes. Mechanic could not find anything wrong. Had another occurrence, mechanic found a code indicating the ECM may be bad. He tells me this should have noting to do with the door locks. The door locks latch and unlatch, uncommanded. Engine stops when under power. Mechanic has no course of action at this time.

- Monroe, OH, USA

problem #281

Mar 122012

Trailblazer 6-cyl

  • 130,000 miles
I have the same issue as the 2006, 2007 Trailblazer recall of August 2012. The door module shorted out.

- San Andreas, CA, USA

problem #280

Aug 182011


  • 95,000 miles
The low beams on my wife 2005 Trailblazer went out while we driving home to va from SC. They still wont work. Apparently mine aint the only vehicle with this problem. Why wont Chevy recall them and repair them.

- Weber City, VA, USA

problem #279

Jun 012010

Trailblazer 6-cyl

  • 75,000 miles
While driving the, window switch began to smoke so I physically removed the switch and have since not had power window access on the passenger side front door. The cost to replace was too great and at the bottom of the priority list. More recently, maybe 2 months ago, the driver side switch showed signs of the same results after a smell of burning electronics and heat to the touch so I simply unplugged the switch all together. The cost to replace these switches is quite significant and have not had any luck with Chevrolet in the past with complaints so I figured I would wait until I had a little extra money to replace these switches. On the news today I heard the end of a report and only caught the words GM and window switches so I came home and searched and came across so articles involving 2006 models. That is how I came across this website. I would very much hate to find out that the company does not know the problem exists further than 2006. An unrelated problem I encountered with the vehicle, which was quite unnerving, was that the third brake light assembly came off while driving on a local highway at @ 65 mph approximately 2 years ago. The fixture became un attached from the passenger side and was "flapping" off the driver's side. Only for a matter of time, I'm sure. Luckily our family was being followed by another family and they notified us by cell phone and we were able to remove the fixture without incident on the shoulder. It would have caused serious problems without doubt had it come completely off. When we notified the dealership, they told us we were out of our warranty and were on our own. Thank you for taking the time to try to make our highways safer!

- Glenside, PA, USA

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