Installation Procedure
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Serial Data Gateway Module (1) - Install
- Secure the retaining tabs.
- Connect the electrical connectors.
Communication Interface Module (1) - Install
- Secure the retaining tabs.
- WARNING:
Upon installing the floor duct to the side of the HVAC case, it is necessary to verify duct opening is completely installed, surrounding the HVAC case outlet port. Failure to do so could result in the duct falling downward, with the potential to interfere with driver's legs and gas/brake pedal operation.
Floor Front Air Outlet Duct - Left Side (1) - Install
- CAUTION:
Refer to Fastener Caution .
Floor Front Air Outlet Duct Bolt (1) - Install and tighten - Fastener Specifications
- Perform the necessary programming and setup procedure: Control Module References