I know, I know, before you say it. I have looked over the forum till my eyes are about to pop out! I’ve got an 06 Colly with a 5.3/4l60e and computer out of an 02 Suburban. So far I’ve managed to get the tach, temp gauge working properly. Found the wires to the fuel sender (purple and black) and hooked them up to the 5.3 computer (purple to pin 54 and black to pin 80). The gauge works, just reads backwards. I saw on another post where someone said to just reverse the wire from the sending unit. Not sure how that would work because the ohm reading would be the same either way. If anyone knows how I can fix this problem I would greatly appreciate it. Heck, as long as I’ve spent trying to figure it out I would be willing to pay for the information. If you’ve done this before, please help a brother Colorado owner out.