Check your grounds
My best guess is a body control module (bcm). For some reason car company's decided that having fuses for your components was too expensive to build, so they have done away with most of them and replaced them with a bcm. It is typically located under the dash where you would expect to find a fuse panel. When they go bad, weird things happen. They control everything from your gages to your door locks to headlights and tail lights; everything on the body.
My best guess is a body control module (bcm). For some reason car company's decided that having fuses for your components was too expensive to build, so they have done away with most of them and replaced them with a bcm. It is typically located under the dash where you would expect to find a fuse panel. When they go bad, weird things happen. They control everything from your gages to your door locks to headlights and tail lights; everything on the body. So the result is that they saved a nickel to build your truck, now it wil cost you a thousand nickels to fix. Aren't we all lucky that the car company's are so thoughtful?
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It may seem like the problems are related, but they most likely are not at all, unless it's an actual battery power issue. Your fuel gauge consists of 2 parts and wires to connect them, the sending unit, which is in the gas tank connected to your fuel pump on your truck I believe, and the gauge itself inside your dash. It is most likely your sending unit/fuel pump which sucks cause that's like $350, altho easy enough to replace yourself with very little gas in the tank. As for the radio check fuses, and AC I have no idea...
SOURCE: 2002 chev silverado 2002 lt
if your gauge was working prior to the replacement, then I'd suspect a loose electrical connection. There should be 2 plugs going to the fuel pump module (pump + sender are one piece unit) in the fuel tank. One for the pump, naturally the other for the gauge (two wire socket). If connections are tight, you may have a faulty pump module,or the installer may have damaged the sender upon replacement. I hope this helps.
SOURCE: fuel pump on 1999 chev silverado cuts out
check the connector had problems with burning up.sounds like it may be corroded
SOURCE: 2000 CHEVY SILVERADO 5.3L FUEL GAUGE PROB.
The problem is in the tank.The sending unit float gauge is worn.Its a factory GM issue.You will Need to replace the sending unit in the tank.I had the same problem and thats what I found.Its real common and this will solve your problem..Its 67.00 Dollars on Ebay..
I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589
SOURCE: my 2002 chevy malibu's temperature gauge, fuel
It is a blown fuse. Check your manual and you will find there is one fuse that takes care of all of these things.
SOURCE: 2003 chevy silverado, fuel gauge started registere...
Common problem on the 03-06 Silverado instrument clusters for the fuel gauge to go out. It's usually caused by one of two main problems, either the stepper motor on the cluster's circuit board is going out or the sending unit on the fuel pump is going out. Check out this blog post about the problem - Silverado fuel gauge problems
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