I recently picked up an 8.1L vortec with the Allison 6-speed. Mine is in a 2007 Classic.
If any one with the same setup could help out I need a picture of the transmission control module mounted to the drivers side of the fan on the radiator shroud.
Not sure the year matters but I'm pretty sure the 5-speed Allison uses a different one. I'm trying to verify which cover is correct
TV 2007 Chevy 2500 Long Box Vortec 8.1/Allison or 2016 Tundra Crew Max 5.7L 4x4
2022 Freedom Express 192RBS
Equalizer 4 way WDH, Prodigy 3 BC
USAF Retired
WAR EAGLE