THE HEATER/DEFROSTER DOOR CAN BECOME STUCK IN THE HEATER MODE DUE TO THE DOOR OVER-TRAVELING THE DOOR STOP, IMPEDING THE DEFROSTER PORTION OF THE SYSTEM FROM WORKING.
IF THIS OCCURS, AND THE WINDSHIELD BECOMES FOGGED, ITWILL IMPAIR THE DRIVER'S VISION OF THE ROAD AND TRAFFIC, WHICH MAY CAUSE ANACCIDENT.
DEALERS WILL INSTALL A POSITIVE DOOR STOP.
SYSTEM: HEATER; WATER; DEFROSTER; DEFOGGER; HOSE; DUCT; AIR.VEHICLE DESCRIPTION: MEDIUM DUTY TRUCKS.NOTE: IF YOUR VEHICLE IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREE UPONSERVICE DATE AND THE REMEDY IS NOT PROVIDED WITHIN A REASONABLE TIME AND FREEOF CHARGE OR THE REMEDY DOES NOT CORRECT THE DEFECT OR NONCOMPLIANCE, PLEASECONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINEAT 1-800-424-9393.