WARNING: This page is about a different car, the 2008 GMC Sierra and 2008 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Transfer Case Shift Control Module Replacement
Courtesy of GENERAL MOTORS CORP.
Callout
Component Name
1
Transfer Case Shift Control Module
Procedure
Disconnect the electrical connector.
Remove the module from the module bracket by releasing the retaining tabs.