Question about 2006 Chevrolet Trailblazer

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2006 trailblazer The low fuel light and guage are reading empty, and the car is full of gas

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  • tamekia2001 Sep 22, 2008

    Check engine light came on. Was told it was idle air control value. Had to end up buying and replacing the entire throttle body. Check engine light went off. Later came back on and now the fuel light comes on even when there is fuel in the car. Had to replace idle pulley as well. Just drama with this truck...very dissatisfied...:(.

  • Evargas77 Oct 17, 2008

    I just filled up my tank w/gas & when i started the truck the gas guage stood in empty, I turned the engine off & started it again, changed to full, as I drove the check engine light turned on & the gas guage arrow goes from empty to full. Can someone please advise me what I should do?

  • mustanggirl1 Nov 13, 2008

    The fuel gauge in my 06 trailblazer would sometimes read empty,but now it does all the time and the check engine light stays on.

  • cjgatto Jan 15, 2009

    there is a small recall for the sending unit in the fuel tank
    call your local chevrolet ( or gmc ) service department
    and have your serial # handy only a certain few are covered

  • melly8094 Feb 12, 2009

    filled my tank up and gas gauge showed empty and low gas light stayed on and on top of that my engine light came on five minutes later!!!!!!!!! what the heck is going on with these trailblazers i have a 2006 trailblazer ls.. please someone help me I was told this was going to cost 600 for the sensor and 300 for the labor>>> ouch this truck only has 40,000 miles shouldnt be breaking down already??????

  • ddhughes79 Feb 17, 2009

    The fuel gauge in my 06 trailblazer would sometimes read empty,but now it does all the time and the check engine light stays on.

  • yaaright May 08, 2009

    after filling up the fuel tank, the fuel comes on and then the check engine light comes on. After a while the check engine light goes off, but then the fuel gauge jumps from full to empty. I have replaced gas cap, but this did not work.

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Ajkill is right. I had the same problem with the fuel light always being on and the guage read empty no matter how much fuel is in the tank. I had to have the fuel level sensor in the tank replaced. This is something that they have to drop the tank for. It was about $400 with the part and labor at the dealership.

Posted on Oct 04, 2008

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The fuel sensor goes bad because of sulphur deposits that are naturally present in most gasolines. To help remedy the problem in the future, use a product called Techron every 3,000 miles. It is a gasoline additive.

Posted on Oct 10, 2008

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This is the problem with the fuel sensor in the full tank id defective replace the fuel sensor .

Posted on Jun 05, 2008

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Went to start my trailblazer. Turn key nothing happens. No noise, nothing. Was starting fine

Posted on May 05, 2012

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I am also having the same problems as others have listed. I called the dealership, and they told me it was common, and that it would cost $600-800 to have it fixed...I don't think so..I just went to chevy's website, and sent in a complaint. Maybe if we all send in detailed complaints about this, they will do something. I sure hope so!!

Posted on Oct 04, 2010

  • whodo8 Dec 03, 2010

    If this a common problem shouldn't G M recall the vehicles and fix the problem. I also have the same problem and if nothing else warrenty should cover repairs.

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1 Answer

Check guages light keeps coming on when i am in park or have my foot on the breaks it is a 2002 chevy trailblazer.


I would check my oil pressure gauge and the oil level as well. the fuel level guage also malfunctions on those models so make sure it is working properly and not floating from full to empty that will cause the light to come on as well as overheating of the engine(low coolant levels)low oil level,low fuel level,and low charging volts from your alternator.if all is well suspect a short in dash.

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Just filled the gas tank in my 2006 f-350 turbo diesel super duty (6.0), started the truck and the guage showed a full tank. Drove down the road about 1/10 of a mile and the guage dropped to dead empty...


A loose connection on the sending unit could cause the problem but also moisture in the tank in cold weather could also be a factor in which i would add fuel line antifreeze to a full tank of fuel..........Hope this helps you out.

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Fuel guage moving all over 2006 chevy trailblazer


I had this problem as well. Took it to the garage and it was a $700 bill the part alone was $440 they had to drop the gas tank - and since then it's not been working right. The fan clutch went a week later another $700 bill. Picked it up and it was still making the same sound - garage replaced another sensor without charging me--picked it up and three days later the service engine light came on. Back to garage and another $80 part was needed under the hood. All this with just 52,500 miles and I keep it well maintained. Not a happy camper at all! Holding my breath but it's been only two days so far so good.

Apr 30, 2010 | 2006 Chevrolet Trailblazer

2 Answers

Just filled up my trailblazer with gas and the


If you tank has gas and your guage doesn't read the gas, then the sending unit is bad or relay or fuse for sending unit is bad.

Sep 16, 2009 | 2006 Chevrolet Trailblazer

1 Answer

40000 miles on Trailblazer gas guage shows empty/check engine lig


i have the same problem and it will cost to have it fixed.but right now we are using our trip odometer by 1st fulling up and refueling at 300 miles then resetting.as far as the check engine it could be as smple as a lose gascap. go to advance auto parts and ask them to check it.they will do it for free.if you buy the part from them you can take it back and they will clear your codes.hopes this helps you get by for a while

Jul 11, 2009 | 2006 Chevrolet Trailblazer

1 Answer

Mine did the same thing


Replace tank level sending unit.

Jun 27, 2009 | 2006 Chevrolet Trailblazer

4 Answers

Fuel gauge


khooper, in another forum, told me that "Chevron Techron Fuel System Treatment Plus can remove harmful sulfur deposits from the sending unit and a filmer agent that can prevent the deposition of said sulfur"

My 05 Trailblazer LT 2WD.
Erratic readings, and when the fuel level was below 1/2 full, the needle would sit on "Empty" with the amber light staying on.

So I went to a dealer, they replaced the fuel level sensor (p/n 19177712 SEN KIT 3.107 $118.62) with labor $270.00 for a total of $398.86 this appears to have fixed it for now.

I also talked to another mechanic who blames ethanol for these deposits !

Mar 08, 2009 | 2006 Chevrolet Trailblazer

2 Answers

Fuel guage fluctuaging and low gas light dinging in 1997 Jeep


the sending unit is more then likely a mess, take it back to where you bought it and demand they fix the problem

Dec 29, 2008 | 1997 Jeep Cherokee Country

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