I own a 2021 Trailblazer LS and since day one there is a "click" sound coming from the break pedal nearly every single time I depress the break, even lightly. It sounds like a switch being activated, I took it to dealer who literally said he had no clue as to what it was, but I shouldn't worry because the vehicle breaks fine. He never once had it checked out by an actual mechanic. Even more strange, while pushing on pedal, continuously braking while going over big bumps in road, the clicking sound appears- so it is not just while initially stepping on pedal. This is driving me crazy with worry. Anyone else experiencing this annoying sound?