SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
CERTAIN AIR BRAKE ANTI-LOCK MODULATORS COULD MALFUNCTION DURING OPERATION OF THE ANTI-LOCK SYSTEM. A NYLON PISTON WITHIN THE MODULATOR AIR VALVE SYSTEM CAN SWELL FROM EXPOSURE TO SYSTEM CONTAMINANTS. CONTINUED EXPOSURE MAY CAUSE THE PISTON TO SWELL TO THE EXTENT THAT INTERFERENCE WITH THE CYLINDER WALL WILL RESULT, CAUSING MOMENTARY STICKING OR A PERMANENT JAM. THIS CAN RESULT IN TEMPORARY OR PERMANENT LOSS OF BRAKING FOR THE AFFECTED AXLE.
Remedy: THE PISTONS IN THE VALVE PORTION OF THE MODULATORS WILL BE REPLACED WITH PISTONS THAT DO NOT SWELL WHEN EXPOSED TO AIR BRAKE SYSTEM CONTAMINANTS.
65,000 vehicles affected
ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
THE ENGINE COOLING FAN BLADES MAY CRACK AND CHIP DUE TO HIGH STRESSES CAUSED BY VIBRATIONS. THE CHIPPED PIECES OF THE BLADE COULD FLY INTO THE UNDERHOOD COMPONENTS. ALSO, THESE PIECES COULD FLY OUT FROM THE VEHICLE IF THE HOOD IS OPEN AND THE ENGINE IS RUNNING.
Remedy: THE DEALER WILL REPLACE THE EXISTING FAN BLADE ASSEMBLY WITH ONE OF ANOTHER DESIGN AT NO COST TO OWNER.
125,000 vehicles affected
SUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:HANGER,BRACKET
11,911 vehicles affected