"A COUNTERMEASURE THERMOSTAT HAS BEEN RELEASED TO ADDRESS A RARE CONDITION WHICH MAY OCCUR DURING ENGINE SOAK IN COLD AMBIENT TEMPERATURES. IN THESE RARE CASES, AFTER AN EXTENDED COLD SOAK, COOLANT MAY ENTER THE THERMOSTATÂ’S INTERNAL PISTON. IF THIS OCCURS, THE THERMOSTAT MAY OPEN AT A TEMPERATURE
WHICH IS LOWER THAN SPECIFIED AND CAUSE DTC P0128 TO BE STORED IN THE ECM MEMORY."
