Allison 5sp: Transfer trouble

[Harleydoc]

This is my first post here. I have an 2003 3500 and it seam like the transfer case is kicking in and out of neutral going down the road this is when it is in 2wd. If I get out of the gas for a bit it is kick back in an go fine for a while. I have not lights still waiting to check if there is any DTC in it. Any help would be great.

Thanks Will

 

[Harleydoc]

Ok so I pulled some history out of the computer today is is have a transfer switch malfunction and a switch malfunction. I guess I need to change the switch and go from there. Anyone have any other ideas

 

[chevyburnout1]

What are the code numbers? Should start with a 'C'

 

[Harleydoc]

I found the problem the transfer case looks like a bomb when off inside it.

 

[chevyburnout1]

That'll happen

 

[Harleydoc]

Now I am about to go and change the fluid in my wife gasser and my gasser as well. What would you guys run in a 2004 chevy suburban with full time 4x4 and 2002 chevy 1500 that has the auto 4x4 button? I run amsoils sever gear in my 4runnner but don't really know what would be the best for the gassers. I looks to me that the oil all slugged up and could not be pumped thur the pump and cause it all to take a poop.

Thanks Will

 

[Harleydoc]

Well I guess for what I have found dex III for the duramax and autotrac for the gassers

 

[adeso]

Well I guess for what I have found dex III for the duramax and autotrac for the gassers

That is what the book says, if you get another used trans be sure to put in a "pump rub kit", my guess is that is what happend to yours

 

[blk smoke lb7]

That is what the book says, if you get another used trans be sure to put in a "pump rub kit", my guess is that is what happend to yours

X2 and i run the autotrac in my transfercase a good friend of mine at GM said to run it,its the best.Its pricey tho 6 to 8 a quart.

 

[Harleydoc]

That is what the book says, if you get another used trans be sure to put in a "pump rub kit", my guess is that is what happend to yours

I got a reman for a local guy here in town today that has being doing Lot do that thing and he has upgrade with pump rub stuff

 

[Harleydoc]

The fuild in the case was more like grease I was thinking someone put the wrong lube in it and could not lube it self