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# GCUS-3-401.
Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION
20710 - CUSTOMER SATISFACTION PROGRAM. VEHICLES EQUIPPED WITH A CONTINUOUSLY VARIABLE RATIO AUTOMATIC TRANSMISSION (CVT) (RPO M4M), MAY HAVE A CONDITION IN WHICH THE DRIVE PULLEY AND BELT COULD BE DAMAGED IF THEY EXPERIENCE AN UNEXPECTED HARSH SHIFT EVENT. DEALERS ARE TO REPROGRAM THE TRANSMISSION CONTROL MODULE (TCM) TO PREVENT DRIVE QUALITY DEGRADATION AND/OR HARSH SHIFTS.
