VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH 4.6L ENGINES. A COOLANT FLOW BLOCKAGE EXISTS AT THE INTAKE MANIFOLD HEATER CORE NIPPLE RESULTING IN NO COOLANT FLOW TO THE HEATER AND, THEREFORE, NO WARM AIR FLOW FROM THE HEATER OR WINDSHIELD DEFROSTER. VEHICLES WITH THIS CONDITION DO NOT COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 103, "WINDSHIELD DEFROSTING AND DEFOGGING SYSTEMS."
RiskLOSS OF VISIBILITY COULD OCCUR, INCREASING THE RISK OF A CRASH.
Fix CUSTOMERS WILL BE ASKED TO VERIFY, FOLLOWING INSTRUCTIONS PROVIDED, THAT HEATED AIR FLOWS FROM THEIR VEHICLE'S HEATER/DEFROSTER OUTLETS. THE CUSTOMERS WILL BE ADVISED TO CONTACT THEIR DEALERS TO MAKE ARRANGEMENTS FOR REPAIR OF THEIR VEHICLES IF NO HEATED AIR FLOW EXISTS AT THESE OUTLETS.