Newest Gallery Photos

  1. Chevy Truck Forum

    Welcome To GMTruckClub.com!

    The #1 Chevy Truck Forum Online

    Online since 2004, we're the #1 Chevy Truck & SUV user community. If you have any questions about your Chevy or GMC Truck, SUV or Crossover, or just want to connect with other GM owners and enthusiasts around the world, you've found the best place on the internet to do that.

    Join Today ~ It's Free

    Registering is Free and Easy! Do it today and we'll see you on the forums soon!

1989 TopKick Differential Lock

Discussion in 'Medium-duty Truck Forum' started by bugvert, Jan 25, 2012.

  1. bugvert

    bugvert New Member

    I have an 89 GMC TopKick that is a line truck, single axle. There is a differential lock light and a buzzer that is on and will not go off. I don't have any manuals for the truck part of my rig. Can anyone tell me how to get the light/buzzer to go off or how to unlock the differential. I've looked everywhere and can't find a button, knob, or switch that has anything to do with this issue.
     
  2. Coach24

    Coach24 Rockstar 3 Years 5000 Posts

    Last edited: Feb 14, 2012

Share This Page