Have a new 2018 Yukon 5.3 Wanting to purchase a new ECM and TCM to tune and keep warranty with originals as un-programmed spares. Have GM TIS for VATS and latest factory downloads.
Just see a lot of different part numbers for the E92. And with a 6spd have seen some use a T87 in place of the T87A Any issues tuning the T87A ? Trying to get rid of TCC slip
Thanks !
