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04 2500HD 4x4 will go into 4x2 sometime

Discussion in 'Chevy Trucks' started by CruzControl, Nov 19, 2011.

  1. CruzControl

    CruzControl Junior Member
    Messages: 2

    On my truck you engage the 4x4 on the dash....it sometime go from 4x4 to 4x2 by its self? help please.....
  2. mpriester

    mpriester Senior Member
    Messages: 394

    i would have the switch on the transfer case looked at as it could be going bad.
  3. chevyzrule810

    chevyzrule810 PlowSite.com Addict
    Messages: 1,214

    I had my service 4WD light come on and off then stay on at 47,000 then a few of the button bulbs blew.Replaced the switch and it fixed both problems.