The loss of the LSY engine from the Cadillac CT6 powertrain lineup means the sedan is no longer available to order with rear-wheel drive. The remaining three CT6 engines are mated to all-wheel drive as standard. These engines are:
- Naturally-aspirated 3.6L LGX V6 making 335 horsepower and 284 pound-feet of torque
- 3.0L LGW V6 Twin-Turbo making 404 horsepower and 400 pound-feet of torque
- 4.2L LTA V8 Twin-Turbo Blackwing making:
- 500 horsepower and 574 pound-feet of torque in the Platinum model
- 550 horsepower and 640 pound-feet of torque in the CT6-V
All three engines are paired with the new GM 10-speed automatic transmission.
Cadillac Society discovered the powertrain change via information provided to it by dealers. The documents state the LSY engine is “built out” and “no longer available” for the 2019 Cadillac CT6. The online configurator for the CT6 confirms the development, no longer showing the 2.0L Turbo engine – which made 237 horsepower and 258 pound-feet of torque – as an option.
There has been no official announcement from Cadillac about the engine’s rather sudden disappearance. We reached out to Cadillac for clarification but, after a week of waiting, have not received a response. As of this writing, two unofficial theories explain the engine’s sudden disappearance.
First, Cadillac could have simply decided to move the CT6 upmarket, though dropping the 2.0L Turbo engine when its (somewhat) direct rivals – like the Mercedes-Benz E-Class and BMW 5 Series – offer such engines is certainly a head scratcher. The other possibility is that production of the 2.0L LSY, an all-new engine that’s rolling out across a myriad of new GM vehicles, is currently constrained. Hence, GM could have simply decided to stop offering it on the CT6 for the time being, and could offer the engine on the CT6 at a later time, when production of the motor is not constrained… though there’s no indication that this will happen.
Source: Cadillac Society