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# 01045A.
THIS CUSTOMER SATISFACTION CAMPAIGN INVOLVES VEHICLES EQUIPPED WITH A FACTORY OR DEALER INSTALLED ONSTAR SYSTEM. A CONDITION MAY EXIST IN WHICH THE ONSTAR VEHICLE INTEGRATION UNIT (VIU) MAY NOT BE ABLE TO ACQUIRE A VEHICLE LOCATION FROM THE GLOBAL POSITION SYSTEM (GPS). *TT