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# PI0928B.
Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION
Bump, Surge or Vibration at Idle in Drive at a Stop
Condition/Concern
Some customers may comment on a bump feeling, a surge or an engine vibration while stopped at idle with the transmission in Drive and their foot on the service brake
