The video above shows you how to replace the water pump on your Cadillac CTS. The water pump in the video shows a 2008 Cadillac CTS however, this water pump replacement is for a Cadillac between these years 2004-2007. Please make sure to follow manufacturers guidelines when installing the water pump.
Gasket is included with the water pump replacement found over on Amazon for around $95 plus shipping and handling.
Manufacturer Part Number: G2060
ASIN: B0143R0ZZA
OEM Part Number: AC DELCO 89018052, GM 12581580