1993 GMC Truck electrical system

1993 GMC TRUCK
Avatar
SMILEY737
  • MEMBER
  • 1 POST
Electrical problem
1993 GMC Truck 6 cyl Two Wheel Drive Automatic

battery charged, cables tight and correct. no power at all, lights nothing. could smell burning wires before died, however can find no rough spots in wiring. just wondering most likely place for the short.
Mar 28, 2009 at 11:18 AM
Advertisement
Avatar
JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Hello, you may be way ahead of me? If there is a battery junction block, I'd start testing there. There is B+ feed to the junction block, there might be several feed circuits coming off of it, if they are protected by fusible links, one of those links may be blown. If the short is downstream from the fusible link, replacing the link won't fix it. I consider up-stream is toward the battery.

It is possible to use a testlite to see if a circuit is shorted to ground. Your testing for a ground. You need to be on the correct, dead circuit.
Mar 28, 2009 at 12:32 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.