Last post on Jun 17, 2013 at 9:52 AM
You are in the Chevrolet Silverado & GMC Sierra
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Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck
#379 of 385 Re: 1993 gmc sierra wont go into 4x4 [titen]
Dec 07, 2012 (4:58 pm)
Hey Thanks for sharing especially about the ATC fuse. My truck has been sitting for 2 years . After reading your blog i went out and it was the ATC fuse. i changed it and the truck works after being stuck in 4 low....I looked 2 years ago and all the fuses for 4x4 were good. but i never knew to look at the one labled ATC.. You are the Man!!!! T hank you so much..Steve
#380 of 385 Re: Robalmighty [robbint]
Dec 24, 2012 (9:30 am)
Hey i just wanted to know if you fix this problem i have the same issue driving hit a bump or roll down hill 30mph rmps drop and fall out of gear, i have to stop hit 4wd button hard clunk and back to 2wd and iam off again.... PLEASE any help would be appreciated.....
#381 of 385 Re: Robalmighty [djgorillaman]
Dec 26, 2012 (11:53 am)
If there is anything we can look into for you (warranty/recall questions, follow up on an appointment with a dealership), we can be reached at socialmediagm.com (include a brief summary, the last 8 digits of your VIN, and your name and contact information).
Sarah, GM Customer Service
#382 of 385 Re: 2003 sierra 4x4 probs [bruce48532]
Feb 02, 2013 (6:31 pm)
Just replaced my encoder motor after reading this thread given your description of the problem. My truck would not shift out of 4wd until a hit a big bump or put it into park then reverse. I had a grinding noise, slipping of the transmission when I gave it gas and pulling to the right (under throttle). It is now working like a champ again! Thanks!
Feb 09, 2013 (7:03 am)
I have a 2006 4x4 silverado ext cab and when I have it in 4x4 auto and turning on dry pave it seems to bind up like it is in 4x4. I thought that when you are in auto 4x4 it is only suppose to be in 4x4 when the wheels spins, My truck has been doing this sense it was new, is this normal?
#384 of 385 Re: auto 4x4 [waffie]
Feb 09, 2013 (11:20 am)
Did you ever get this checked into by your dealership while it was under warranty?
Sarah, GM Customer Service
#385 of 385 Re: 96 chevy silverado 4x4 problems [96chevy4x4]
Jun 17, 2013 (9:52 am)
The actuator is a ground side switch and is one of the last ones in the circuit. Make sure you are getting power out of the fuse first. The transfer case switch is the first switch in the circuit. When you switch to 4wd the t-case switch closes and that sends power to the actuator. Check the t-case switch (you can run a jumper wire and see if the 4wd engages then). There is a chance that the new actuator is bad but that is a very low chance. Check power and ground first, then start checking the switches. And since the floor shifter starts the process check any wiring/switches, or hoses associated with that to make sure it's not causing the actuator not to work when engaged. Like a short or something. Make sure you have ground at switch.