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Diesel Engine

Fig 1: Identifying Thermostat Heater Connector & Upper Thermostat Housing Bolt
GC0137798Courtesy of CHRYSLER GROUP, LLC
  1. Disconnect the negative battery cable.
  2. Remove the thermostat housing. Refer to THERMOSTAT, REMOVAL .
  3. Remove retaining clip and the coolant temperature sensor (1).
  4. Remove and discard the O-ring seal.