Hi,
The fuel level sensor on this vehicle is in the fuel tank and part of the pump module. I suspect that since it isn't accurate, the float may be stuck or the rheostat has failed. The only way to be sure is to remove it. I attached a pic of it.
To remove it and inspect. Here are the directions for replacing it. The attached pics correlate with the directions.
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2004 GMC Truck Canyon 4WD L4-2.8L VIN 8
Procedures
Vehicle Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Fuel Level Sensor Service and Repair Procedures
PROCEDURES
FUEL LEVEL SENSOR REPLACEMENT
REMOVAL PROCEDURE
1. Remove the fuel tank module.
Pic 2
2. Disconnect the fuel level sensor electrical connector from the module.
Pic 3
3. Complete the following in order to remove the fuel level sensor from the module assembly:
3.1. Disengage the locking tab from the sensor.
3.2. Slide the sensor downward from the module.
INSTALLATION PROCEDURE
pic 4
1. Complete the following in order to install the fuel level sensor to the module assembly:
1.1. Align the edges of the sensor with the slots in the module.
1.2. Slide the sensor into position, ensure the locking tab is fully engaged.
Pic 5
2. Connect the fuel level sensor electrical connector to the module.
3. Install the fuel tank module.
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What I suggest is to check that. Let me know if you have other questions,
Take care,
Joe
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Tuesday, May 19th, 2020 AT 8:22 PM
