Brake light switch

Ok, Whats the trick on changing the brake light switch? How do you get at it? 99 burb 5.7 4X4

first you stretch, climb into the driver's seat, upside down mind you and take a gander up behind the brake pedal and you'll see it. it's mounted in there with a jam nut like a toggle switch. when your finished installing the new one get your wife, buddy, son, or dog to extract you from the vehicle. remember to stretch again.