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# PIC-5572.
CHEVROLET: ON CERTAIN VEHICLES, AFTER UPDATED CALIBRATIONS WERE INSTALLED, MAY EXHIBIT A POSSIBLE AND AN ESTIMATED ELECTRIC RANGE DROP. *PE UPDATED 12/7/11. *PE