- 1). Park your vehicle on level ground. Roll the windows down and turn the engine off.
- 2). Open the doors of your Trailblazer and inspect the weatherstripping around the window frame. Make note of any areas that might look damaged.
- 3). Insert the sealant into the caulking gun. Review the caulking gun's directions for specifics on how to accomplish this task.
- 4). Apply a thin layer of sealant on the damaged weatherstrip areas. Wipe any excess sealant off with a damp paper towel. Allow the sealant to dry before closing the windows.
- 5). Close the windows and drive your vehicle. If there is wind noise, reinspect the weatherstripping for other areas where damage may be and apply the sealant.
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