[NC_John]

Got some really good info from Justin at Speartech. He confirmed wiring and termination points across the switches, PCM and TAC. He also mentioned I may want to use the 2004 corvette base tune instead of the 2004 truck. I'm not near that point in troubleshooting yet but it might come up later. Here is what he had to say about it -

The 2004 Vette Blue/Green PCM is known to support cruise control. When we test with some of the truck manual files the clutch switch doesn't always change in the tech 2 but with a Vette file it does. Not sure if trucks don't utilize a clutch switch or not, which I would imagine they would to cut the cruise but you never know with GM. Heck, the manual trucks may not have cruise from the factory so you may not be doing anything wrong. So the Vette file would certainly give you a better foundation file for working cruise. I'm just speculating and haven't confirmed via GM schematics but if we were the ones that would have done your base file for this setup it would have been Vette based.