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I was just out hunting,I have never had my truck off road adn well we had to put it into 4x4 high,all was well for about 45min and then a engine light came on and the truck wouldnt move,he code said transmisiion malfunction also on the truck itself it said,something??cant rtemeber the first word then it said prohibited,the truck woudnt stay in drive so i drove home after clearing the code in M Iout it into 6th gear and shifted fine the whiole way home,the dealer gave me heck for clearing the code,but I ouldnt go anywhere what was I suppose to do I was 25 clicks in the bush,I have it home now and went for a quick drive in D and it works fine,the gm tech figures its transfer case related,any thoughts???:mad:
 

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Moved to the Allison Aftermarket section due to the B&M Valvebody upgrade! ;)
 

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Clicks??? Civilian speak please.:D


Was the transmission hot??

Check the easy stuff first. Tranny fluid level, transfer case fluid level.

Kinda sounds like a transfer case problem but I'm no expert.


Change the spin on filter on the ali and check to see if there are any fm in there.

Someone with some knowledge will chime in on this I'm sure.
 
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