WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of GENERAL MOTORS COMPANY
Oil Pump Suction Pipe Bolt (1) - Remove
Oil Pump Suction Pipe (2) - Remove
Oil Pump Suction Pipe Gasket (3) - Remove and DISCARD