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# PB-11264.
BUICK: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. FOR CERTAIN 2011 MODEL VOLTS WITH HEATED SEATS, THE ELECTRONIC CLIMATE CONTROL MODULE HAS AN INCORRECT CALIBRATION, WHICH NEEDS BE REPROGRAMMED. *PE