2007 2500 hd TCM location

[Paul Scerini]

So I have  2005 2500hd with a 8.1 l. With a Alison Tran. Won’t go in reverse changed n s b u on outside of Tran on driver side  and cleaned plug and ingtion switch  as well. But still no reverse and also still says on dash  range shift inhibited    Change fluids  no chunks of metal  both filters   Bought as is with no reverse  was use buy city they have a p t o. Unit on motor as well ? Any help out there on my reverse  don’t know how well drive is but does move in drive. Thanks  folks  Pauly 

[Fraga]

Did U ever find out what was wrong with truck ? I have a problem that os something almost similar 

if U did nail it please post it