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# TSB-09-05-26-001.
CHEVROLET: THE PARK BRAKE LEVER WILL NOT RELEASE FROM THE BOTTOM/FULL APPLY POSITION. CONDITION MAY BE CAUSED BY THE PAWL LEVER NOT RELEASING FROM THE BOTTOM POSITION. *PE