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no back up lamps

Discussion in 'Chevy Trucks' started by ajracing81, Jul 28, 2012.

  1. ajracing81

    ajracing81 Member
    Messages: 78

    i have a 05 2500 gmc and my back up lamps arent working. I checked the fuse under the hood and it is not blown. I also checked the bulbs and they are fine. Any ideas on what is the problem?
  2. peteo1

    peteo1 PlowSite.com Addict
    Messages: 1,658

    Check for corrosion in the lamp sockets. Possibly a bad ground as well.

    SHAWZER PlowSite.com Addict
    Messages: 1,121

    On my dodge it ended up being the reverse switch on the side of trany.tymusic:drinkup:
  4. mcwlandscaping

    mcwlandscaping 2000 Club Member
    Messages: 2,557

    I'll second ^^ possibility. Did you see if you had 12vdc to the fixture?
  5. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,743

    Ck the electrical "box" on the frame rail by the spare tire. There's like 4 plugs going to the box,,,unplug them all and ck for the green fuzz .
  6. maverjohn

    maverjohn Senior Member
    Messages: 902

    On my 89 chev it was the switch on the trany, Hpoe that helps.
  7. GSS LLC

    GSS LLC Senior Member
    Messages: 637

    Might be the shifter cable adjustment?
  8. ajracing81

    ajracing81 Member
    Messages: 78

    so i have been trying to figure this out still i have power at the trailer plug for reverse lights. I dont have interior lights except if im in reverse and the doors open. The lights on the doors work when i open them. any ideas?????????????
  9. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,743

    Well,,,did you ck the 4 plug box at the frame rail?