- 2014 Confirmed
new for 2014 (GM's 2014 changes); the 2017 order guide prints it only as contents of 1SB, the one equipment group every car carries (p.4, p.5, p.8, p.10), and in its RPO code index (p.22), so 2017 is not claimed
TKA Confirmed
Documented applications
This page aggregates every documented appearance of TKA in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.