Coolant Level Sensor Replacement for Buick Regal (China) 2001

1. Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Partially drain the radiator. Refer to Cooling System Draining and Filling .



3. Disconnect the electrical connector from the low coolant module.




Important: To unlock the low coolant module, lift one leg of the snap clip from its locked position and pull outward with a slight twisting motion

4. Remove the low coolant module.
5. Discard the O-ring seal.

Important: Install the new O-ring. Lubricate the O-ring seal with coolant.

1. Place the snap clip leg in place.



2. Install the low coolant module.



3. Connect the electrical connector to the low coolant module.
4. Connect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

Important: To properly fill the cooling system requires the use of the air bleed vents.

5. Fill the radiator. Refer to Cooling System Draining and Filling .
6. Inspect for leaks.