WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of GENERAL MOTORS COMPANY
Items
1. G210 Steering Wheel Pad Accessory Wiring Harness (UKL)
2. G209 Steering Wheel Pad Accessory Wiring Harness (UKL)