How to Disable the Seat Belt Chime in a 2005 Chevy Trailblazer
- 1). Park your vehicle and remove the key from the ignition.
- 2). Insert the male end of the first seat belt extender into the female end of your driver's side safety belt.
- 3). Insert the male end of the second seat belt extender into the female end of your front passenger side safety belt.
- 4). Cut the excess strap material from the seat belt extenders for comfort. Your 2005 Chevy Trailblazer seat belt chimes will be disabled.
Source...