GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Page 1 of 2 12 Last Post byLast Post by
Results 1 to 10 of 18

Thread: Tow/Haul Switch

  1. #1

    Question Tow/Haul Switch

    Tow/Haul switch inoperative.

    99 GMC Sierra 1500 4x4.

    Owners manual doesn't tell which of the three fuse blocks contain the fuse, perhaps combined with another wiring circuit? Neither does the Chilton's even address the Tow/Haul switch.

  2. #2
    Legend

    Join Date
    Aug 2008
    Location
    East of Branson, Missouri
    Posts
    2,788
    Blog Entries
    14

    Default

    I'm not even sure what switch you are talking about so I won't be of much help! But if all else fails grab yourself a meter and go from one fuse to the other checking for continuity on all the fuses.
    Steven



    "The Sarge"
    1999 Chevy Suburban LT- K2500
    7.4 454 Vortec, 4WD
    305/70/16 on Eagle Alloy




  3. #3

    Smile

    Quote Originally Posted by Springthing View Post
    I'm not even sure what switch you are talking about so I won't be of much help! But if all else fails grab yourself a meter and go from one fuse to the other checking for continuity on all the fuses.

    Thanks Steve!

  4. #4

    Smile

    Quote Originally Posted by Springthing View Post
    I'm not even sure what switch you are talking about so I won't be of much help! But if all else fails grab yourself a meter and go from one fuse to the other checking for continuity on all the fuses.

    It's the button at the end of the shift lever that locks out overdrive when towing.

  5. #5
    Legend

    Join Date
    Aug 2008
    Location
    East of Branson, Missouri
    Posts
    2,788
    Blog Entries
    14

    Default

    ah! I know what you mean.. I don't have it so wasn't sure if yours did. Well, hopefully someone will come along and be able to give advice. I'd say if you have a meter just start going to town on checking for continuity. Should take you more than 5 minutes or so.

  6. #6
    Sr. Mechanic trimhalifax's Avatar
    Join Date
    May 2009
    Location
    Halifax,Nova Scotia,Canada
    Posts
    173

    Default

    You might want to check for broken wiring. Pop off the cover under your steering column and check the two wires near the shift lever. These have a habit of breaking due to movement of the lever.
    01 Silverado Ext
    4x4
    pewter
    billet grille
    step bars

  7. #7

    Default

    Quote Originally Posted by trimhalifax View Post
    You might want to check for broken wiring. Pop off the cover under your steering column and check the two wires near the shift lever. These have a habit of breaking due to movement of the lever.
    I agree on this one. They are two very small thin wire wrapped in a larger casing. I had to cut them to replace my shifter boot, and there is NO extra slack on them. i could see them breaking. I had to extend them to keep them from shorting when I shifted out of park once I fixed them. I would check this and if one or both wires are broken, I would solder in some extensions, seal them up, and you should be good to go.

    2008 FORD F350. My new all-around truck.
    2001 Silverado Reg. Cab Not-So-Base -- SOLD
    2003 Avalanche Z71. No Cladding. Check out my Mod thread. - Crashed. Will be rebuilt soon.
    1974 Triumph Spitfire 1500 - Work in Progress
    2003 Sierra 3500 Duramax. The Newer, Better Work Truck -- FOR SALE


  8. #8

    Default

    Thanks to all of you!
    cberentsen

  9. #9

    Default tow/haul switch

    cberentsen did you find a problem with your wiring. My 06 just up an quit working over the winter. Only use it when camper is loaded and the switch did nothing.
    QUestion for you is, when you switch on ignition does the light come on during the light test? My light does not so was thinking burnt out bulb, will road test to see if shift points are diff\rent soon.

    Brad

  10. #10
    Sr. Mechanic trimhalifax's Avatar
    Join Date
    May 2009
    Location
    Halifax,Nova Scotia,Canada
    Posts
    173

    Default

    Mine only lights up when switch engaged,not at initial startup.

Page 1 of 2 12 Last Post byLast Post by

Similar Threads

  1. Tow Haul
    By 1flyfisher in forum General Chevy & GM Tech Questions
    Replies: 1
    Last: 04-17-2010, 08:04 AM
  2. tow/haul not working
    By bigbrett in forum Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)
    Replies: 1
    Last: 02-22-2010, 08:25 PM
  3. Question about TOW/HAUL
    By osduck5 in forum General Chevy & GM Tech Questions
    Replies: 3
    Last: 12-03-2009, 09:27 AM
  4. tow/haul
    By judsteele in forum General Chevy & GM Tech Questions
    Replies: 0
    Last: 11-16-2009, 08:13 AM
  5. Tow / Haul
    By bzboardco in forum GM Powertrain
    Replies: 2
    Last: 01-05-2009, 11:41 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •