Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Mitsubishi for this TSB. Call your local Mitsubishi dealer's service department & ask for a copy of TSB# 0342B004.
WATER LEAKAGE MAY OCCUR AT THE FLOORBOARD DUE TO POSSIBLE CONDITIONS. WATER IN THE FLOORBOARD CAN EVENTUALLY SATURATE THE SILENCERS UNDER CARPET, CAUSING A MUSTY SMELL. *TT