Removal Procedure

WARNING: This page is about a different car, the 2023 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
Courtesy of GENERAL MOTORS COMPANY

Transmission Wiring Harness Bracket Nut (1) Remove [2x]
Transmission Wiring Harness Bracket (2) - Reposition
Courtesy of GENERAL MOTORS COMPANY

Disconnect the control valve body transmission control module electrical connector (1), then unclip the wiring harness from the cover.
Drain the transmission fluid. Transmission Fluid Drain and Fill
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Automatic Transmission Fluid Cooling Heat Exchanger Inlet Pipe (1) - Remove - Automatic Transmission Fluid Cooling Heat Exchanger Inlet Pipe Replacement (LSY)
Courtesy of GENERAL MOTORS COMPANY

Transmission Fluid Cooler Inlet and Outlet Pipe (1) - Remove - Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LSY)
Courtesy of GENERAL MOTORS COMPANY

Transmission Fluid Cooler Pipe Bracket Nut (1) - Remove
Transmission Fluid Cooler Pipe Bracket (2) - Remove
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{with LSY} Automatic Transmission Fluid Cooling Exchanger (2) - Remove - Automatic Transmission Fluid Cooling Exchanger Replacement (LSY)
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Control Valve Body Cover Bolt (1, 2) - Remove [12x]
Disconnect the wiring harness retainers as necessary.
Courtesy of GENERAL MOTORS COMPANY

NOTE:
Some components not shown for graphic clarity.

Control Valve Body Cover (1) - Remove
Control Valve Body Cover Gasket (2) - Remove and DISCARD
Courtesy of GENERAL MOTORS COMPANY

NOTE:
Some components not shown for graphic clarity.

Body Side Wiring Harness Opening Seal (2) - Remove and DISCARD