BLKSSLTT

iTrader: (12)

my truck is a 2000 2500 silverado 4x4 6.0 4l80e. i lost reverse in my truck so i got a replacement trans. tore the old out and got the new in. i have the autotrac t-case. i plugged in all the plugs on the wiring and couldnt find a spot for the one. it seems to me that it goes in the back if the tcase somewheres. its like an oval shapped plug that has 4 pins on the inside. i have a feeling that this plug is causing my speedometer not to work? does anyone have a wiring diagram for my truck or knows where this exactly goes? i spent about a half hour under my truck today looking and cant seem to find it anywheres; im stumped. help me out. also looking for capacities on doing a filter and trans flush myself and also the t case as well.