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Restraints Control Module Replacement

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.
GM5020715Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
WARNING:

Do not strike or jolt the Restraints Control Module (RCM). Before applying power to the RCM, make sure that it is securely fastened. Failure to observe the correct installation procedure could cause Supplemental Inflatable Restraint (SIR) deployment, personal injury, or unnecessary SIR system repairs.

WARNING:

Refer to SIR Warning .

Preliminary Procedures

  1. Disable the SIR system. SIR Disabling and Enabling 
  2. Air Distributor Duct Adapter Replacement
1 Sensing and Diagnostic Airbag Module Nut [ 3x ]
CAUTION:

Refer to Fastener Caution .


Procedure 
Disconnect the electrical connectors.
NOTE:

Disconnect the electrical connections from the SDM module prior to removing the SDM module nuts.


Tighten 
9 N.m (80 lb in)
2 Restraints Control Module

Procedure

  1. Perform the necessary programming and setup procedure:Control Module References
  2. Enable the SIR System. SIR Disabling and Enabling