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# 000730018.
Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
SOME OWNERS OF VEHICLES THAT HAVE THE TRANSMISSION SHIFT LEVER MOUNTED ON THE STEERING COLUMN MAY COMMENT THAT THEY HAVE DIFFICULTY REMOVING THE TRANSMISSION SHIFT LEVER FROM THE PARK POSITION.