Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Chevrolet for this TSB. Call your local Chevrolet dealer's service department & ask for a copy of TSB# 131000.
THIS BULLETIN ADDRESSES CUSTOMER COMPLAINTS OF A POPPING OR SNAPPING SOUND FROM THE RIGHT FRONT DOOR WINDOW AREA ON 1999 THROUGH 2000 MODEL YEAR ASTRO AND SAFARI VANS. *TT