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I was changing out the radio in the truck and i must have pulled a wire in the dash because my fuel pump stopped working, no power getting to it ive tested the wire to the pump, everything else still works, truck turns over, just no gas from the pump. I've had no luck searching online for which wire it is specifically. I've already checked the fuse and relay and both are good so it has to come down to a wire in the dash. Any help would be appreciated.

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Did you try removing the radio & checking the wiring behind it?

Also, try pulling out the radio fuse & see what happens.

If nothing changes, reinstall the fuse.

Have any check engine lights come on since this happened?

If so try hooking up a scanner to see if it can assist.

 

Haven't used this forum before but maybe they can help.

 

http://www.gmtruckclub.com/forum/forums/chevy-silverado-forum-gmc-sierra.17558/

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This may help with at least part of the problem:

 

http://sparkys-answers.com/2011/08/1990-chevrolet-k1500-pickup-multiple.html

 

There are fusible links associated with radios. It's possible that the fusible link has either a weak connection or very likely the fuse in the link is bad. Also, if the radio you installed has a different fuse amp it could be interfering.

 

I'm still researching through Google but hopefully this will give you somewhere to start.

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