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# SB-10-01-37-001A.
CHEVROLET: HVAC BLOWER MOTOR INOPERATIVE; BLOWER MOTOR OPERATES ON HIGH SPEED ONLY (REPLACE BLOWER MOTOR AND RESISTOR). THIS CONDITION MAY BE CAUSED BY AN OPEN RESISTOR. *PE