Print this page 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:
62,068 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

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2005 Chevrolet Trailblazer:

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

2005 Chevrolet Trailblazer Owner Comments (Page 6 of 21)

« Read the previous 20 complaints

problem #301

Apr 072009

Trailblazer 6-cyl

  • 26,000 miles


Purchased 11/24/2008 ~20K miles. Within 5months a whole host of issues started, the 1st being the fuel gauge not working by showing full & actually not (ran out of gas twice) and then showing empty after fillup. 1week later the engine light came on & the instrument panel stopped working. ~ one year later, Dec 2009 the speedometer fluctuated from working properly to ~50-55mph base instead of 0. after a few days, the speedometer did zero-out but then did not show any speed but stayed at 0. along with the speedometer issue are the headlights dimming sporadically. All of the issues have continued on-off since. March 2012 the windshield reservoir started leaking/cracked. February 2013 had tuneup, brakes, and thermostat replaced and since then add front vents stopped working plus severe, sporadic, high idle - driving to work (metropolitan, downtown, capital of state-high rush hour) the high rev started and all I wanted was to get to workplace parking lot ~2miles. 2blcks fr pkg lot, I was braking at a left, dblturn light with the rev & brakes grabbingh/counteracting. I come to a full stop but my SUV revs to over 3rpms & I thought the trblzr would break free & crash into the cars in front of me! I have a "christine" car and hate the feeling of driving an unsafe vehicle that Chevy won't recall/fix and I can't afford to buy anything else currently or get all these issues repaired. I place mine, my kids and passengers' lives & safety into jeopardy every time we get in to drive/ride. I only have 78K miles and 1yr of car pymnts left. I will never buy another Chevy again and I was a diehard Chevy and "buy american" consumer. This vehicle is a piece of junk. My next purchase will be any vehicle that is safe, whoever the manufacturer may be. Can anything be done to help"?"

- Aurora, CO, USA

problem #300

Mar 182013

Trailblazer 6-cyl

  • 73,000 miles
I had just filled up my SUV, and while on the highway, my fuel gauge started dropping within a minutes time, to 3/4 tank, 1/2 tank, 1/4 tank, then the fuel light came on and stated I was on empty. I didn't smell gasoline, but the gauge then started going back up, then down and went haywire. After some of the gas was used, it went back up to almost full, but after a bit, it dropped back down to half tank again. Every subsequent time I fill up, the gauge does the same thing. Another incident that has been happening for the last few years is the head lights dim and get brighter. This doesn't happen all the time, but at least three times a week. I didn't think too much about it until I saw other complaints on this website about the same thing.

- Middleburg Hts, OH, USA

problem #299

Mar 012008

Trailblazer 6-cyl

  • 60,000 miles
I purchased my '05 Trailblazer new off the lot never had any problems until the speed odometer stopped working. Couple years later my oil & gas gage stopped working. I based my speed off my RPM & calculate my gas mileage after each fill up. Now my dashboard lights are dimming & I've noticed on many occasions my headlights flicker...I have replaced the battery twice & the water pump twice. Now when my check engine light or this other little chk gage light comes on, I don't know if a malfunction of if something is truly wrong. Now it's running rough, acts as if it wants to cut off. They have checked all that they can but because the chk engine light isn't on, there's no way for them to identify the problem. And unfortunately, when the mechanic rides with me of course the car won't do it...and although, these are separate issues I can't wonder if replacing the battery is connected the same system as the dashboard. I've been told by 2 differ mechanics it would cost up to $600 to replace the whole system. But after reading all the complaints, many having the same issue as me I can't help but wonder if this problem could or should be on a recall & if not, why? if you view the complaints why not look into the very present & persistent problem! its very frustrating & aggravating to play a guessing game when your up & down a highway daily! not to mention a safety hazard! surely, your company isn't so money hungry that you can't take responsibility for you product & offer to pay for some or all the costs to repair! I'm a single mother of 3 & I was blessed enough to pay my car off a year ago but I've paid more in repair costs & stressing whether or not I'll make it safely to & from my destination! I never had this many issues with my grand Jeep Cherokee. I am truly disappointed in your vehicle...

- Guthrie, OK, USA

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

Read the next 20 complaints »

Not what you are looking for?