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:
1 / 1
Injuries / Deaths:
1 / 0
Average Mileage:
85,498 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 engine problems

engine problem

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2005 Chevrolet Trailblazer Owner Comments (Page 2 of 2)

« Read the previous 20 complaints

problem #4

May 012013

Trailblazer 6-cyl

  • miles


2005 Chevrolet Trailblazer. Consumer writes in regards to vehicle fuel gauge sensor issues. The consumer state the first time the fuel gauge starting acting erratic was in 2007. The dealer informed his wife, the vehicle had ran out of gas, even though the gauge indicated there was 1/2 tank of gas. The consumer stated he continues to experience an erratic behavior of the fuel pump and the low fuel indicator light illuminated. The latest preliminary diagnosis was the vehicle was unable to sustain an idle, because of the erratic fuel pressure (fuel pump). The consumer also stated the vehicle has electrical problems and the oil pressure gauge was inoperative.

- Biloxi, MS, USA

problem #3

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 #2

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 #1

Oct 132012

Trailblazer 6-cyl

  • 89,000 miles
Due to a faulty gas gauge the car engine stopped on a highway three miiles away from fuel with children in the vehicle.

- Meriden, CT, USA

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