Fuel gauge does not work properly. It does not accurately indicate amount of gas in tank and fluctuates. Low fuel light comes on even when there is gas in the tank.

- Cuba, NY, USA

Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6) my 2006 Chevrolet Trailblazer ext ls has a faulty the fuel gauge/fuel sending unit. At first it would show full when we filled up, but after driving for 5 minutes would go to empty. Now it never even registers the fuel level anymore, and the check engine light stays on all the time. I am afraid of stalling, especially since I have children with me. The dealership told me that they couldn't fix it because no recall had been issued. This problem started at around 38,000 miles. [xxx]

- Brandywine, MD, USA

Please open an investigation into the performance of the fuel tank sensor in 2006 Chevrolet trailblazer. It is defective and the fuel level jumps around continuously. The sensor is defective and could result in a vehicle running out gas and causing an accident that could result in major injuries.

- Edgewood, NM, USA

Our 2006 Chevrolet Trailblazer ext ls has a faulty the fuel gauge. At first it would show full when we filled up, but after driving for 5 minutes would go to empty. At around 1/4 a tank it would go back to an accurate level. Now it never even registers the fuel level anymore, and the check engine light stays on all the time. I am afraid of stalling, especially since I have children with me. The dealership told me that they couldn't fix it because no recall had been issued. This problem started at around 36,000 miles.

- Honolulu, HI, USA

Last year I purchased a 2006 Trailblazer ext and last week I filled up the tank only to have the fuel gauge peg on E for empty. After about three hours of driving did it finally go to full. I'm filing this because after pulling out code PO463 with my tester and researching this fuel sensor failure on the web I found out that about 400 other trailblazer owners have the same defect. From the looks of it the cost is around $800-$1000 to repair. Why isn't this a safety defect already. My wife and child depend on this vehicle and I can, T have it run out of gas in the middle of a busy highway. (usaf retired).

- Canadensis, PA, USA

4WD quit working and was told by the dealership today I needed to replace the transfer case for over $2,000. Already reported the fuel sensor quit working. Told by a phone rep for NHTSA it could take at least a year to investigate and was given a phone number for the ftc. My car has under 44,000 and when the transfer case went it there was a smell of smoke.

- Parker, CO, USA

2006 Chevy trailblazer, fuel gauge light and fuel indicator activates when there is still plenty of gas in the vehicle. Once the gas gets down to 1/2 or 1/4 tank of gas it will activate the empty fuel light. This is a major concern and safety problem as it is misleading. I don't know how much fuel is actually in the tank. It could run dry and leave a person stranded. We do a lot of night driving and I certainly wouldn't want my pregnant wife running out of fuel in the middle of our "not so safe" city which by the way has one of the highest murder rates in the states. So yes, this is a safety issue that should be addressed and covered by the GM.

- Brockport , NY, USA

Fuel gauge on my 2006 Chevrolet trailblazer has started working erratically or not at all. Every time I fill my tank, the gauge stays at empty at first, then eventually starts working, but sometimes erratically. It can go up or down for no apparent reason, showing the tank as being completely empty when it is, in fact, full. I have not replaced it to this point as my vehicle is out of warranty, instead using the odometer to track actual mileage and filling the tank accordingly. Based on research on the internet, this appears to be an extremely common problem with Chevrolet trailblazers built since 2004. The average cost to repair, again according to internet research is $500-$700. This is a safety issue because it could result in running out of gas in an inconvenient or dangerous location, such as while driving at highway speeds on an expressway, or in a secluded or inaccessible area. Given the extent of this problem, why has there not yet been a recall for this issue?

- East Norriton, PA, USA

The fuel gauge sensor is malfunctioning in my 2006 Chevy trailblazer. In reading on-line posts, this is a common problem that GM is ignoring. I already had to pay out of pocket for a rear differential that snapped about 7 months ago. Now I have to deal with a gas gauge that could potentially leave me out of gas or even cause problems with the fuel pump.

- Milford, NJ, USA

2006 Chevrolet trailblazer 65,000 miles, lost power on the interstate at 70 mph resulting in a near crash. Gas gage read 1/2 tank when leaving home, car stalled after 5 miles. Tried to re-start engine and the low fuel warning light and chime came on. Vehicle would not re-start. Family member brought a can of gas for the vehicle at it ran fine. Since that time the gas gage has been more sporadic. If I fill the tank, it may read full, it may read empty. It sometimes reads full, then drops to 1/2 then to E in less than 5 miles. Called Chevrolet dealer where I bought it. The service department stated it was the fuel sending unit, without ever seeing the vehicle. Service manager stated is a common problem with these vehicle.

- Marshall, MI, USA

My 2006 trailblazer has 50,000 miles the gas gauge started going from empty to full while in transit and now it just stays on E all the time now. From my research this is a common problem with most 06 trailblazers and it been going on for more than a year in the Chevy's. it cost almost $800 and I don't have the money to have it fixed so I have to use the trip meter to keep track of my gas through mileage. This all started when the mileage was about 32,000 miles.

- Bronx, NY, USA

Was driving car with quarter tank of gas and suddenly fuel gauge dropped to empty. Filled tank with gas and gauge began to fluctuate between levels then began to read correctly for several days. At a quarter tank it dropped to empty again. Filled with gas and is now fluctuating again. This could be a real hazard if I run out of gas on the interstate. After all the complaints I've read about this problem I don't think I should have to use my extended warranty and pay a deductible for something that should be a recall.

- Temple, GA, USA

2006 Trailblazer ext, 12/08 exiting freeway onto 50 mph roadway and accelerating from stop sign at top of ramp, when engine lost power and slowed to a stop, with engine running and check engine light on, all at once. Almost broadsided on drivers door by approaching traffic.. onstar said in was a throttle valve body issue and had it towed to dealer for night drop off. Next morning no code found, but they cleaned the throttle body valve assembly and linkage. No charge for diagnostics or cleaning! 4/21/09, 3000 miles later, the check engine light comes on with vehicle operating normally. Onstar says get it to a dealer in one day, its the throttle valve body and linkage. $100 for diagnosis already sent to dealer by onstar. Dealer says the electronic radiator fan clutch is not engaging and engine runs cold, technician said no, it runs hot, neither of which was occurring. Dealer says they have a history code for throttle valve and linkage, so its obviously carboned up and though its not listed anywhere in owners manual for such service, they say its a maintaining issue, don't void your warranty. If you don't let us do it for $149, it's $52 for reading the history code. They remove the air cleaner duct and they try to sell me a bill of goods, I.e. look at the carbon build up, which is nothing more than a very thin, thin coating of darkened oil vapor residue which is pulled in from the crank case vent hose attached below the intake horn, after he air filter and sensor. Rip off! the vehicle ran perfect but for the check engine light, never ran cool or over heated and was getting good mileage. I let them replace the $600 plus fan for the $100 diagnostic fee. To keep from voiding my warranty, I had to spend the $149 for an old history code, to prove that I maintained the vehicle per dealer recommendations. Rip off !!!

- Thousand Oaks, CA, USA

Fuel sensor failure on 2006 trailblazer. This has happened twice in two years. The first time the vehicle was under warranty, now it is not for the exact same failure.

- East Amherst, NY, USA

2006 Trailblazer ext 4.2 6cyl...is having fuel gauge problems. As far as I know I am not the only trailblazer owner with this problem. Fuel gauge reads empty with low fuel light on. And check engine light for the same problem when tank is full.

- Plainfield, IL, USA

I own a 2006 Chevrolet Trailblazer ext and the fuel gauge never registers the correct amount of fuel. It always fluctuates between empty and 3/4 full even after filling the tank completely. I have had this problem for at least one month now and the repairs will be at least $500 to complete. The problem is still occurring as I can not afford to replace the part at this time and hopefully no further problems will emerge in the meantime. I have been researching the problem over the internet to determine if others are having similar problems. This appears to be a trend that has been ongoing for a few years now. This would be a huge courtesy if the manufacturer would do a recall for this fuel sensor problem and avoid legal action as well as to continue upholding a great american legacy such that Chevrolet has built.

- Smyrna, TN, USA

Fuel system, gasoline.

- Lakeland, FL, USA

After getting gas and getting back in truck, I noticed the fuel gauge read E. after driving 100 plus miles the gauge would slowly drift up to half, then fall back to E. over time it got worse until the fuel gauge read E all the time. I finally convinced the dealership this was under ca emission warranty and they agreed to fix it. When they were doing the repair, they noticed the main connector for the fuel pump got hot and melted and was ready to short out. So they replaced the entire fuel pump assy. Also they noticed the clips that hold the fuel line to the tank were never installed by the manufacturer. So they installed those as well. The service dept knew about this problem right away, which tells me this has been a on going problem and they just do the repair under warranty to avoid any recalls. This is becoming a problem with more and more vehicles, and no one is willing to investigate this issue, unless the vehicle finally catches fire and someone loses their life before someone acts. If a fuel pump assy has a melted connector, there is something seriously wrong.

- Oceanside, CA, USA

2006 Chevrolet trailblazer V6, gas gauge is failing, reading empty when tank is full and reading full when tank is empty. On an internet discussion board there are many people with the same problem.

- Union, NJ, USA

Stopped at a local exxon station to fill up with gas at 1/4 tank level. I filled the tank to full a now $90 expense. When I got back in and started my 2006 Chevy Trailblazer ext, the gas gauge indicated an empty tank and the yellow warning light stayed on. I drove for a few miles, stopped turned the vehicle off and restarted the vehicle with no indicated change to the fuel level. I checked to make sure that the gas cap made a good seal. Nothing seems to make a difference. Now the gauge jumps from full to empty and all levels in between with no rhyme or reason. After seeing how many people at www.topix.com/forum/autos/Chevrolet-trailblazer/th8ji6tepo3vrji3D are having the same problem; I believe that this should be a mandated recall for GM. This has all happened within 1000 miles of my manufacturer's warranty expiration.

- Antioch, TN, USA