GMPartsGiant.com offers the wholesale prices for genuine 2024 Cadillac XT6 parts. Parts like Automatic Transmission Assembly are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.0L, 6 Cyl 3.6L. Model Code: BASE X-OVER 4DOOR, LUXURY X-OVER 4DOOR, SPORT X-OVER 4DOOR.