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  1. #1

    Default Electrical problem

    My truck started and nothing electrical worked( radio ,windows, a/c).

  2. #2
    Jr. Mechanic
    Join Date
    Dec 2011
    Location
    Jacksonville, FL
    Posts
    98

    Default

    We're definitely gonna need more specifics!!! Year, model, what mods or parts have been changed lately, etc....

  3. #3

    Default

    Sorry. It's a 1985 gmc Sierra with a 350 vortec small block. I just bought it. I was having a problem with flickering (headlights, dash lights radio) so I figured out my engine wasn't grounded to the frame. It's worked fine for a couple weeks. Now this. Thanks !

  4. #4
    Jr. Mechanic
    Join Date
    Dec 2011
    Location
    Jacksonville, FL
    Posts
    98

    Default

    I would start by checking grounds. You mentioned it's a vortec so it isn't the original motor, how long hs the motor been in the truck? There are most likely a few wires that couldn't be retrofitted into the '85 that may be causing some of this!

  5. #5

    Default

    Not sure how long. Not too long. I notice the wire I used had a little burnt spot on the wire coating. I'm going to get a heavier wire. It's worked perfect since I grounded it. What about fuses?

  6. #6
    Jr. Mechanic
    Join Date
    Dec 2011
    Location
    Jacksonville, FL
    Posts
    98

    Default

    Yea fuses and relays could cause this....just go through all of the fuses and check them.

  7. #7

  8. #8
    Jr. Mechanic
    Join Date
    Dec 2011
    Location
    Jacksonville, FL
    Posts
    98

    Default

    Yea man if that doesn't fix it just let me know.....one of us guys on here can help you figure it out!

  9. #9

    Default

    Cool. Do u think that wire that I used might have been the cause? I guess anythings possible

  10. #10
    Jr. Mechanic
    Join Date
    Nov 2011
    Location
    Central Illinois
    Posts
    128

    Default

    Quote Originally Posted by Quietflight72 View Post
    Not sure how long. Not too long. I notice the wire I used had a little burnt spot on the wire coating. I'm going to get a heavier wire. It's worked perfect since I grounded it. What about fuses?
    Be careful using heavier wire. If there is a short you could damage components instead of just burning a wire. That's like replacing a 5A fuse with a 10A because you keep blowing the 5A. Not usually a good idea.
    Also, make sure the wire you replaced was not actually supposed to be a piece of fuseable link. Replacing that with a piece of wire is bad.
    2012 Silverado 1500 LT 4X4
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