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Fuel guage goes to empty and sometimes not - C1500 Chevrolet Cars & Trucks

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More than likely the sending unit is bad, if so you will have to remove gas tank to get to it. The sending unit is attached to the fuel pump inside of the gas tank. Not a hard job, just time consuming.

I read that high ethanol levels in the gas corrode the sending unit and cause faulty readings and I read that filling the tank with the engine is running can cause this so maybe disconnecting the battery to reset the ECM first but if you want to replace the sending unit I tried an unusually method on a Dakota to get to the tank, I removed the bed and got right to the top of the tank and was done is 30-45 minutes. I disconnected the light harnesses and used a impact to remove 4-6 bed bolts and with the help of another slide the bed back on a some pallets. If the access point for the sending unit is on top of the tank then this might be a easier method to get to the sending unit.

Hope helps (remember to rate this answer).

Posted on Oct 07, 2010

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