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# 180102.
Affected Component: POWER TRAIN:MANUAL TRANSMISSION
A CONDITION HAS BEEN IDENTIFIED ON SOME VEHICLES WHERE THE SHIFTER MAY NOT SUCCESSFULLY PASS THROUGH NEUTRAL AND INTO FOURTH GEAR DURING THE SKIP SHIFT OPERATION. *TT