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Message: <blockquote data-quote="ORVietVet" data-source="post: 21497" data-attributes="member: 9438"><p>My dentist's assistant has a 2009 Silverado K2500HD with a fuel gauge problem. It can run down to between 1/4 and empty, I told her to think of 1/4 tank as empty, and she fills it and then it will read zero intermittently and no CEL comes on but can intermittently get the low fuel warning at the same time. Then a day or two later it will be correct after she starts it. I checked for codes today and found one history code, P0463. That is for: Fuel Level Sensor "A" Circuit High. Research told me that when this code sets it may or may not get a CEL. She said sometimes, there is a CEL when the problem happens, but then goes off by itself. I retrieved the code and cleared it. She is gonna do an oil change with me soon and I will be checking the steering and suspension for her too. Now the fuel gauge problem. I want to hook up either my new scanner or my Foxwell GM only scanner and both have Live data and Bi-Directional capabilities. If I tell the fuel gauge to read ZERO and then read 1/2 tank or full tank and it responds as it should, that tells me the problem is in the very common fuel level sensor. If it does not react as it should then the stepper motor is suspect. The hardest part may be checking all wiring between the two to make sure there is no wiring problem at either end. If needs the tank to come out and change out the pump and sender, looks like a b*i*t*c*h to do and some places say unbolt the bed and lift it and go in under it. Unless I can move the bed completely back enough to stay away from fuel pump area, I am not gonna try to go in under a bed just lifted straight up for access. Dangerous. I will do the testing and report my findings.</p></blockquote><p></p>