Question about 2002 Chevrolet TrailBlazer

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My gas gage stays on empty when theirs gas in it then moves when its warm

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Weak sensor in the tank. these are tested with an ohm meter as well before removing the tank

Posted on Feb 06, 2010

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Posted on Jan 02, 2017

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The petrol gage is not working how do I fix that it is a Chevrolet captiva ltz 4x4 2008 model


Unfortunately, it's usually the sending unit that's gone bad, it's inside the gas tank.
Very few vehicles have an opening in the floor directly above the gas tank to pull the sending unit and pump. Usually you have to jack up the vehicle and drop the gas (petrol) tank.
The replacement part is cheap and a mechanic should be able to do the repair for a decent price. They have to remove most of the petrol before removing the tank so I would get the tank close to empty before bringing it in. (I know, without a gage it's hard to guess)

Jul 21, 2016 | Chevrolet Cars & Trucks

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My gas gage is always moving It says empty then minutes later it says full and so on and I don't know how to fix it


remove your gas tank and change a new one so that your Gage will move accurately

Jun 30, 2015 | Cars & Trucks

1 Answer

2008 jaguar s series gas gage quit working


probably not all that difficult to fix it you have patience. The needle going way past full is an indication of a short before the sender unit or in the sender unit. Pull the power wire from the sender unit and see what the gauge does. IT should stay on the empty mark. IT may be just a fuel sender unit .

Dec 23, 2013 | 2008 Jaguar S Type

1 Answer

My 2000 chevy venture gas gage stays empty and hard to tell how much gas i have left.


THERES A CONTROL MODULE FOR THE GAS GAGE COST ABOUT $200 I know my daughters chevrolet SUV DID SAME THING

Jun 18, 2009 | 2005 Chevrolet Express

2 Answers

Even with a full tank my 2005 Envoy XUV fuel light stays on and fuel gauge marks empty


u need to change this gauge or try to dissasseble and clean it very well then try to install it back again

Jun 06, 2009 | 2005 GMC Envoy Xl

2 Answers

I have a 94 chevy s10 and my gas reads empty while i drive.but when i shut off the truck the gauge moves to different readings.


Is......the problem--"the gas gage reads empty when there is fuel in the tank. OR, The gage moves when the key to turned off ?

If it's the first,
You will need to test the gage and through process of elimination, determin if the Sending unit inside the fuel tank has gone Bad.

If its the second ? - Electrical gauges will move when powered down. Normal

Testing the gauge may not be easy - just depends on your ability.
It is a simple 2-wire gauge circuit, when disconnect (usually need the fuel tank) the gage reads in one direction (either full or empty)
then when shorted-the gage reads in oppisite direction.

Of course you must select the correct wires or you may short out the wrong circuits!! Most GM vehicles use a purple wire & black wire.

A quick method I have used to check the in-take part of the gauge is this.
1st. know there is gas - 1/2 tank works best.
2nd driver's door open, key in run position, engine not running.
3rd gently lift up on the door then let if come back down, gently.
just enough to cause the gas to slosh around.
4th - keep an eye on the gas gage, a bad sending unit in the take will show up as a "twitchy" needle.

Of course, if the gage never leaves empty - sloshing won't work.
I have a known good sending unit I can plug into the vehicle and simulate different levels of fuel - if the gas gage works, I know the problem is in the tank.

Let us know.

Dave

Feb 28, 2009 | 1996 GMC Sonoma

1 Answer

1996 Buick Regal


you gas tank float tells you weather your empty or full. it sound like it is stuck. you might need to replace the float to get you gas gage working again.

Jun 24, 2008 | 1996 Buick Regal Olympic Gold

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