2016 Cadillac CT6 Engine: 2.0L L4;. 2017 Cadillac CT6 Engine: 2.0L L4;. 2018 Cadillac CT6 Engine: 2.0L L4;. Part Type: Vacuum Pump. Contents: Vacuum Pump. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.
