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# PIP-4875.
GM: THERE ARE MANY INTERMITTENT CONCERNS. THE HEATED SEAT MAY NOT WORK PROPERLY. THE BLOWER MOTOR MAY NOT BE CONSISTENT. THE MALFUNCTION LIGHT MAY ALSO BE ON WITH MULTIPLE POSSIBLE TROUBLE CODES STORED. 2011 CHEVY VOLT. UPDATED ON 06/16/2011. *KB UPDATED A SECOND TIME ON 06/16/2011. *KB UPDATED ON 06/20/2011. *RM