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My 2001 silverado is having an electrical issue. The fan controller, 4 wheel drive switch and some of the guages and odometer dont work. It has happened a few times for various lengths. Last time it happened i hit a bump and everything went off.
 

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My 2001 silverado is having an electrical issue. The fan controller, 4 wheel drive switch and some of the guages and odometer dont work. It has happened a few times for various lengths. Last time it happened i hit a bump and everything went off.
Might be loose connection behind
 

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My 05 sierra may or may not crank, my amp gauge maxes out sometimes, fuel gauge went all the way around and buried itself, speedo buried itself a few times. When I turn the key sometimes nothing happens. After several tries it catches and cranks, WTF? Right now all gauges work. I've cleaned every ground on the truck and added a couple, but it will happen again. I'm open to suggestions.
 
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