FixVault

Accessory AC and DC Power Control Module Replacement (Regular Cab)

WARNING: This page is about a different car, the 2021 GMC Sierra 3500 HD and 2021 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
GM5161791Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
Preliminary Procedure 
Body Rear Panel Insulator Replacement
1 Accessory AC and DC Power Control Module Nut [3x]
Tighten 
9 N.m (80 lb in)
2 Accessory AC and DC Power Control Module
Procedure 
Disconnect the electrical connectors.