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  1. #1

    Default Newbie in need of 4wd trouble shooting

    Hello all. As from the title, I'm a newbie to this forum. I found it doing a search for a 4wd problem trying to do some troubleshooting.
    I have an 01 GMC Sierra 1500 with the 4wd lever on the floor. Its only got 110,000 miles on it.
    The other day my husband ( Yes, I am a dreaded woman ) said I'd tore out his 4wd in his truck.
    I used it in 4wd for about half a mile on pure ice, then switched back to 2wd. I only drove 8 miles in truck that day.
    He got in next day and said I'd tore it out ..... asked if I'd heard it clunk which I had heater fan on highest setting and the radio up pretty loud so no, I didnt hear any clunking.
    Would any of you think actuator or encoder motor ?
    Our mechanic cant take a look at it for a couple more days but was trying to do some trouble shooting.
    We bought the truck from a very good friend of ours in November and he never had a problem with the 4wd fwiw.
    Thanks for any direction you could guide me into, to do some research.

  2. #2
    stephan's Avatar
    Join Date
    Sep 2010
    Far West, Oregon USA,
    Blog Entries


    Hey WW, welcome to the GM truck club. I can't help you with 4wd problems but someone will be along soon who can. There are a lot of 4wd pros on here so stay tuned.

    ** we don't dread women here. We kind of like you
    BTW, your husband probably blew up the 4WD & is just trying to blame it on you lol
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol

  3. #3
    Jr. Engineer racekid91's Avatar
    Join Date
    Feb 2011
    Green Bay, Wisconsin, United States


    So it will not go into 4 wheel drive? Did you check to make sure all the linkage from the floor shifter to the transfer case is still connected?
    Last edited by racekid91; 02-12-2011 at 05:50 PM.

    1995 Chevy Tahoe

  4. #4


    Welcome to the G M T C !
    Last edited by retired2001; 02-12-2011 at 09:03 PM.

    2010 Z/71 Colorado C/C
    Black 4X4 w/5.3L V8
    2007 Winnebago Adventurer
    w/8.1L Chevy & Allison 6spd.
    Canyon Lake, Texas

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