stljim2005

I have the system. You DO NOT run into issues with the "myChevrolet" for lock, unlock, remote start etc. So far I've ran into OnStar in the radio not cooperating but their working on it. They may have a solution that one of their harnesses (the one pertaining to onStar was "pinned" wrong and they have a solution for that so far. I'll still give it a couple days to see if it settles itself out from the fix I did that they mentioned. As far as the cluster issues I can't speak of because I have yet to get the upgraded cluster, but I was / am thinking of getting it. If I do hopefully there is a solution or fix for those issues soon as well.

Any update? I already had the invertor module under the passenger side dash, and installed the factory receptacle in its place. still nothing. So I'm sure the BCM needs a check/update to get the power correctly going to it. Let us know if you have yet to go down that route.

Relays wouldn't be needed. 2 diodes would though. Run a line with diode face correct position from cargo switch wire to "reverse bumber lights" and do the exact same thing to the reverse signal from the taillights. That's how to make them work automatically without manually turning on and off. Now to achieve the manual option, you'll need to do the same as I described earlier but also hook the switch up to a 12v input and run that to your "reverse bumber lights" as well. Then you should have what you were wanting.