WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Audio Rear Volume Control Knob
Courtesy of GENERAL MOTORS COMPANY
Callout
Component Name
1
Audio Rear Volume Control Knob (Qty: 2) Procedure Using light pressure pull the audio rear volume control knob off from the heater and air conditioning and radio control module stem.