Question about 1986 Chevrolet C1500
Change gauge sending unit how's it wired
Fairly common problem with GM vehicles. The sending unit in your tank has a small circuit board that an arm is attached to which moves up and down according to your fuel level. This circuit board and arm are not making good contact. Unfortunately the only good solution is to replace this part.
Posted on Oct 28, 2009
Testimonial: "thought probably that was it but better off replacing whole unit .i was for for gauge proplem thanks. "
The sender unit has a fine resistance wire with a slider to read the level, the slider or wires are worn and making intermittent contact, the low fuel light is a seperate switch so it will still work.access to the sender is usually under the rear seat cushon, under the soundproofing and a cover, have a look and describe what you have .
Posted on Nov 01, 2009
I have the same problem on my 2003 Dodge Ram 2500 5.7 Hemi. Also the gauge is sometimesslow to register after filling. Maybe 5 minutes.My neighbor has the same poblem with his 1999 Durango? I think this is a job for a recall.
Posted on Aug 11, 2010
If you only have one wire on the sending unit,the other wire is more than likely an independant ground.
the norm is that if a device only has one wire going to it. is grounded by the outer part of the device.
Posted on Jun 11, 2011
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It sounds like a problem with the fuel gauge sender unit in the fuel tank which has worn out and gone open circuit and needs replacing. Access to the unit is usually through a removable plate in the floor in the rear of the vehicle. Disconnect the wiring connector and any hoses and then remove the securing screws. Replacement is done by reversing procedure.
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