try to run either one of them and I get this message:

"Unable to execute file........The application has failed to start because its side-by-side configuration is incorrect. PLease see the application event log for more detail"

any suggestions???

Buy a custom tune through Diablosport? How do I go about doing it?

Hey there, and thanks in advance for the help.......I just bought a 2008 Tahoe 5.3L, and opted for a Trinity programmer. My previous vehicle was a 2007 Tahoe 5.3L, on which I used a Superchips programmer.
I am happy with the performance overall, but was surprised when I initially plugged in the ...