The official notice
Defect
VEHICLE DESCRIPTION: MULTI-PURPOSE PASSENGER VEHICLES EQUIPPED WITH 5.0L ENGINES ORIGINALLY SOLD OR CURRENTLY REGISTERED IN THE STATES OF ALASKA, IDAHO, IOWA, MAINE, MICHIGAN (UPPER PENINSULA ONLY), MINNESOTA, MONTANA, NEBRASKA, NEW HAMPSHIRE, NEW YORK, NORTH DAKOTA, SOUTH DAKOTA, VERMONT, WISCONSIN, AND WYOMING. THESE VEHICLES, WHEN OPERATED FOR EXTENDED PERIODS OF TIME AT HIGHWAY SPEEDS AND TEMPERATURES BELOW -20 DEGREES FARENHEIT, DO NOT RETURN TO IDLE DUE TO ICE IN THE THROTTLE BODY.
Safety Risk
ALTHOUGH THE VEHICLE CAN BE CONTROLLED BY EITHER APPLYING THE SERVICE BRAKES OR SHIFTING THE TRANSMISSION TO NEUTRAL, INCREASED BRAKE PEDAL EFFORTS OR SOME INCREASE IN STOPPING DISTANCE CAN RESULT.
Remedy
DEALERS WILL INSTALL A REVISED PCV SYSTEM WITH WATER HEATED VACUUM SOURCE.