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# 01028A.
THIS CUSTOMER SATISFACTION CAMAPIGN INVOLVES VEHICLES EXHIBITING A CONDITION IN WHICH THE GENERATOR LOW VOLTAGE INDICATOR LIGHT IN CERTAIN VEHICLES WILL NOT ILLUMINATE UNDER LOW VOLTAGE CONDITIONS. *TT