Question about 2001 Chevrolet Blazer

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My fuel gage shows low fuel just filled the tank, when idleing the light comes on says low fuel and needle drops ?????

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You most likely have a fault in the fuel sensor that sits inside the fuel tank.

will need to be replaced if you cannot stand the annoying low fuel beep that will keep coming on.

Posted on May 08, 2010

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Posted on Jan 02, 2017

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2006 Chevy Colorado Truck. Gas tank filled and fuel gauge indicator dropped to 1/4 full, when truck is idling fuel gauge drops to empty and low fuel light comes on. Suggestions? Thank you.


Check and or test fuel gauge sending unit and the gauge . Videos on youtube showing how to . Also i would have the vehicle checked for DTC's - diagnostic trouble codes . You may want to think about taking to a qualified repair shop .

Fuel Gage
The instrument panel cluster (IPC) displays the fuel level as determined by the engine control module (ECM). The IPC receives a serial data message from the BCM indicating the fuel level percent. The fuel gage defaults to empty if:
• The ECM detects a malfunction in the fuel level sensor circuit.
• The IPC detects a loss of serial data communications with the BCM.
• The BCM detects a loss of serial data communications with the ECM.

DTC P0461
The fuel level sender changes resistance based on fuel level. The powertrain control module (PCM) monitors the signal circuit of the fuel level sender in order to determine fuel level. When the fuel tank is full, the sender resistance is low and the PCM senses a low signal voltage. When the fuel tank is empty, the sender resistance is high and the PCM senses a high signal voltage. The PCM uses the signal circuit of the fuel level sender in order to calculate the total remaining fuel percent in the tank. The PCM sends the fuel level percent via the class 2 serial data circuit to the instrument cluster in order to control the fuel gage. The fuel level information is also used for misfire and evaporative emission (EVAP) diagnostics.

DTC P0462 Fuel Level Sensor Circuit Low Voltage
DTC P0463 Fuel Level Sensor Circuit High Voltage

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1 Answer

If my fuel gage on my 2005 Chevy Aveo doesn't work, how do you fix it? This started @ 78,000 miles


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1 Answer

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How big of gas tank is on it. {gallon wise}. And the gage shows full when you fill it up then after you have about 2-4 gallons left it drops to below the yellow line. Light comes on. Why.


ok im trying to be a mind reader now!!! what car is it????
i can tell you why the light come's on,,,its to tell you you need to fill up with gass again? in the uk we call that light the "**** he*d's light" as people dont see it then they run out of gass! stupid "A" if you realy need to know how many galls it takes just fill it up when the light comes on,,not after you have ran out of gass!

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Check gauge light can come on for a number of different things, from Low fuel to low oil pressure to high engine temperatures. When the light comes on check all the gauge's and see whats causing it, one or more of the gauge's will be showing an issue, Low fuel or low oil pressure, Low battery power. Any of the mentioned things can cause it... Figure out whats causing it then you can remedy the situation...

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Fuel level sensor in tank bad????


Yes it is all one unit, and yes that is what the problem is. don't use aftermarket parts, use OEM, (Delco Remy) they are much better quality.

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While in drive, the idle will bounce low and high, there is a stutter when you press on the gas peddle, has stalled while pressing/pumping gas pettle. have to hold gas peddle too keep from stalling when...


I have a 91 shadow and had a similar problem. Mine is fuel injected, and the quick fix was to just go buy some fuel injector cleaner, I reccomend STP, and throw that in the gas tank every fill up for about a month. Mine hasn't had the problem since.

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