GM engineer told me that the early T1 trucks (19 to 22 classic) were actually a modified K2 platform truck and that the electronic issues are gone on the 22 and up T1 trucks. These are the trucks that have super cruise on some high end models. He also told me to except to see displacement on demand on the 3.0l diesel in the next year or two (along with higher torque/horse power numbers).
Jay
2023 Tahoe 3.0l diesel
2013 Harley Switchback
2021 Ram 2500 6.7l (sold)
2018 Chevy Traverse (sold)
2021 Silverado 3.0l LM2 (sold)
2019 GMC Sierra 6.2l (sold)
2019 Colorado ZR2(sold)
2017 2500HD CC D/A (sold)
2015 1500 CC High Country 6.2l (sold)
2010 Chev 2500HD CC D/A (sold)
2013 Chev 2500HD CC D/A (sold)
2006 Chev 3500 CC D/A (sold)
2005 Harley Ultra Classic (sold)