Help? Blinker flashing

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by MurtherX, Sep 8, 2010.

  1. MurtherX

    MurtherX New Member

    Just bought a 1994 Chevy Silverado and left back blinker and brake light don't work. I tried flashers everything works but nothing in the back left blinker and brake light. Also front left blinker flashes fast but with flashers on it doesn't. I checked the bulbs, they're fine. Even replaced them and problem still persists.

    Any other suggestions?
  2. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Sounds like your tail light circut board has had it.. They are $15-$30 for new ones.
  3. MurtherX

    MurtherX New Member

    Are those hard to put in? Is that in the circuit the inside of the taillight?
  4. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    You tail light and the circut board are two differnt pieces, the circut board you have to remove to replace a bulb so you disconnect the harness and swap the bulbs into the new holder (circut board) and your done.. about a 10min job.
  5. MurtherX

    MurtherX New Member

    Makes sense. That's what the plug goes into. That has the bulbs. Very easy then! =)

    Well, Friday when I get a chance I will pull my other tail light and plug it in on that side to see if it works. If it does, then we know for sure its the circuit board.

    Thank's. I will keep you guys updated! =)
  6. MurtherX

    MurtherX New Member


    I didn't get a chance to check out what I previously stated but noticed tonight when I turn lights on that while in park with lights on the break light or tail lights don't come on... On either side!

  7. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Well i would start cleaning connections and check the ground. the connection and the ground are both by the spare tire in the rear. Also it is possible that you have bad circut boards but start with cleaning and go from there.
  8. MurtherX

    MurtherX New Member

    I put the other tail light on the side where seemed no power and nothing happen. So I know it's not circuit board. Has to be ground somewhere. Also does it matter, I noticed on some forums that people said something about towing lights on it. It has a towing connection on back, should I check anything on that?

    ---------- Post added at 06:08 PM ---------- Previous post was at 06:06 PM ----------

    Also, I checked the fuses inside my truck. Is there fuses under the hood of my truck as well? If so, I cannot find them anywhere!

    ---------- Post added at 06:54 PM ---------- Previous post was at 06:08 PM ----------

    Update - So I was outside messing around under it where the ground was and found a black ground that went to nothing (from towing cable) so I hooked it up to a ground and nothing came on. So there was another cord inside where the tailight comes down that was black and hanging I hooked it up and nothing happen. But now when I try right blinker it blinks fast (nothing appears) and now nothing works on the back! LOL.. wtf...

    I'm thinking a fuse is blew. But I have no idea where. I looked under dash all are good from what it seems. I see nothing under the hood that holds fuses.
  9. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    I would remove the towing harness connector and just plug the lights in straight together...
  10. GMGUY

    GMGUY Member

    I agree trailer wiring is always a place of suspect. If you still have no luck check on the left frame rail roughly below the brake master cylinder. The tail light wiring is run in a loom on top of the frame. It is held to the frame with a metal retainer that can rub throught the conduit and provide an unwanted ground.

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