Location 05 Pacifica coolant fan switch - Cars & Trucks

SOURCE: cooling fan relay placement 05 pacifica

IF YOU OPEN THE HOOD ON THE RIGHT SIDE THERE IS A SQUAR BOX THAT SITS RIGHT NEXT TO THE BATTERY OPEN THAT BOX AND LOOK UNDER THE PART YOU OPEN AND IT HAS A DIAGRAM AND THE NUMBER WHERE IT GOES

SOURCE: location of coolant temperature sensor and

Removal & Installation To Remove:

1. Before servicing the vehicle refer to the precautions at the beginning of this section
2. Remove or disconnect the following:
   • Engine coolant into a suitable container to a level below the ECT sensor
     
     
   • ECT sensor harness connector (A)
   • ECT sensor

To Install:
NOTE: Use care when handling the coolant sensor. Do not drop damage to the coolant sensor will affect the operation of the fuel control system.
NOTE: Replacement components must be correct for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque which may affect the operation of the component. Use the correct torque specification when installing components to avoid damage.

1. Coat the sensor threads with GM P/N 1050805 sealer or equivalent
2. Install or connect the following:
   • ECT sensor
     1. Torque to: 15 lb-ft. (20 Nm)
   • ECT sensor harness connector
   • Engine coolant
3. Start the engine then idle until normal operating temperature is attained.
4. Recheck coolant level and top off as needed.
5. Test drive the vehicle.

--- I couldn't find a reference for the 'fan coolant relay switch' although I'm sure there is one on this car.