Im looking for a wiring diagram for this truck, nothing except for the 6.0 is GM. The battery, brake, brake booster lite are on. They think the lites went out going over bumps. there is a relay up on the dash that cliks, when we unplug it the lites go out or a...

FIX posted 1/12/2010

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle