2021 Trailblazer ACTIV FWD
My husband was washing my car and discovered a button while detailing the inside that made the horn honk. Sitting in the driver seat, it’s just to the right of your legs, on the outside part of the section that has all the buttons (auto start/stop, LKA, etc). It’s not labeled, no icon or picture on it, and I couldn’t for the life of me find it in the manual. Any idea what the function of this button is?