i have a 1998 gmc 4-4 when you step on the brake peddle with the key off the head lights and fuel pump comes on . what could be wroung with it ??
Im thinking you are having an issue with your ignition switch..
Look for a cross connected wiring in the main harness in the frame rail.
Possible bad alternator? Current back bleeding threw the alternator?
Good Morning Shoe !
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