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# 022003.
VEHICLES ARE SHIPPED FROM THE FACTORY WITH THE SUSPENSION TIGHTENED DOWN UNTIL JOUST BUMPER CONTACTS A TEMPORARY PLASTIC STUFFER IN EACH DAMPER OR SHOCK. THE STUFFERS MUST BE REMOVED DURING NEW VEHICLE PREPARATION. *TT