GMC 2016 Sierra Denali Owner's Manual page 146

Reprogramming a Single
Universal Remote System
Button
To reprogram any of the system
buttons:
1. Press and hold any one of the
buttons. Do not release the
button.
2. The indicator light will begin to
flash after 20 seconds. Without
releasing the button, proceed
with Step 1 under
Programming the Universal
Remote System.
Instruments and Controls 145