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Intermittent Turn Signal Failure 1997 Suburban

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by Huntr, Nov 22, 2013.

  1. Huntr

    Huntr Member

    I have a 1997 Suburban.
    Left turn signal works sometimes and sometimes it doesn't within the same trip. When I plug in my trailer, it always works.
    Thoughts?
    Thanks
  2. dw6171624

    dw6171624 New Member

    Look and check your grounds it sounds like wen u plug your trailer in its giving it a solid ground from trailer so i would start with checkin grounds
  3. Huntr

    Huntr Member

    Do you know where is the ground on the back of the suburban?
  4. dw6171624

    dw6171624 New Member

    No i dont a haynes or chilton should tell u
  5. Huntr

    Huntr Member

    It eventually started affecting left and right both. Always after driving a while. Changed the flasher relay. Seems to have fixed it.
  6. 98BIGBLOCKBURB

    98BIGBLOCKBURB New Member

    I have the same problem on my 98. Also works fine when I plug into 7-pin of my camper. The circuit boards of these tailights are notorious for going bad. First to go was my right then my left. Am now looking into a quality replacement set of stock looking LED tailights. Have seen them ranging from about $140 a set on ebay to about $300 from LMCtruck.
  7. Huntr

    Huntr Member

    Try changing your flasher relay first. $15.00 part. Mine have worked without a problem since changing the relay.

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