the traction control have anything to do with transmission not shifting
No and yes at the same time. If you Trac control simply fails your trans will be fine. If your speed sensor fail the trans won't shift and the Trac control won't work
Search Chevrolet C/K 1500 Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Chevrolet C/K 1500 Experts