Autotrac - service 4wd - now no power on dash buttons
#1
Autotrac - service 4wd - now no power on dash buttons
My 2004 silverado 3/4 ton has autotrac. A while back it would "put itself" in 4wd low. I could stop and push it to 2wd Hi, or auto, and it would be back to normal. That went on for a while, and I replaced the dash button, and it went away completely. A while after that, the message came back on, and the dash buttons quit working all together. Stealership said that it was the actuator in the transfer case. So that was replaced yesterday after all of the winter ice crap. . . . Still no action on the dash buttons for the transfer case.
I checked the power wires at the t-case, and I have 1.8v. This is while using the ground on the harness or grounding off of the frame.
I checked the 4wd fuse on the door panel and it's also good with 12v.
What else is there to check or reset? New dash button, and new t-case actuator.
I checked the power wires at the t-case, and I have 1.8v. This is while using the ground on the harness or grounding off of the frame.
I checked the 4wd fuse on the door panel and it's also good with 12v.
What else is there to check or reset? New dash button, and new t-case actuator.
#3
13 Second Truck Club
iTrader: (7)
A neighbor said there was Gm bulliten on this, ( master machinic for them) made mention that the front diff fluid needed to be changed out to a synthetic....
I had that message come on but it would go away- I changed those fluids and haven't seen the message since-
Good luck hope it's a easy fix for ya this time around
I had that message come on but it would go away- I changed those fluids and haven't seen the message since-
Good luck hope it's a easy fix for ya this time around
#4
A neighbor said there was Gm bulliten on this, ( master machinic for them) made mention that the front diff fluid needed to be changed out to a synthetic....
I had that message come on but it would go away- I changed those fluids and haven't seen the message since-
Good luck hope it's a easy fix for ya this time around
I had that message come on but it would go away- I changed those fluids and haven't seen the message since-
Good luck hope it's a easy fix for ya this time around
Found out that there's some kind of controller that might need to be read at the stealer ship
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#8
I found some testing procedures, I'll try them out tomorrow
transmission/transfer case issues
#9
Custm2500's Rude Friend
iTrader: (17)
Did you get access to the codes or see if the actuator could be controlled with a scan tool.
Likely you have a broken wire or a loose connection if you have replaced the switch and the actuator with no success.
A friend of mine had a loose connection at the fuse box under the hood.
Verify all the grounds are good as well.