- 2019–2020 Single-source
GM Authority's LTA engine page gives the CT6 Platinum and the CT6-V for 2019–2020 with the 10L90 transmission; the NICB manuals list 4.2L twin turbo series in 2019–2020
LTA Single-source
Documented applications
This page aggregates every documented appearance of LTA in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.