Somebody didn't put things back together properly. 99.99999% chance that the wiring, grounds, fuse blocks, ECU connections etc. need to be looked at...
Most of those are history and permanent codes. The ones that are pending and current look like some are tune related. Looks like you have 3 or 4 that...
ill give that a go and see how it does, with the updated shift speeds it feels way better under normal driving, no more holding a gear for dear life...
I have a 2011 colorado that I put a 6.0 in it. I have 2011 colorado v8 harness. I have ecu from ctsv. I'm new to tuning but am trying to learn. Do I...