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Thread: Sevice 4wd

  1. #1

    Default Sevice 4wd

    WE JUST HAD OUR FIRST SNOW FALL IN PA. IT SNOW LESS THE 2 " AND I PUT MY 2003 TAHOE INTO AUTO 4WD BUTTON ON. WHEN I GOT HOME ,LESS THE 3 MILES I PUT IT BACK INTO 2WD AND A SEVICE 4WD CAME ON THE DASH THAT I TO SEVICE THE 4WD.. WHAT DOES IT MEAN? AND WHAT DID I DO TO THE TAHOE?

    VINCE

  2. #2

    Default

    When the service 4wd light comes on, it means that the transfer case control module (TCCM) has detected a fault (analogous to when the service engine soon light comes on). SOP would be to find a shop with the proper equipment to read DTC's from the TCCM.

    It seems that these have frequent problem with the switches.
    '98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
    '92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
    "My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World

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