WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
Illustration
Tool Number/ Description
EN-471 KM-471 Adapter Use in combination with EN-6327 - A and commercial pump
EN - 6327-A KM-6327-A Cooling System Test Adapter Use in combination with KM-471