Removal Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill) or Draining and Filling Cooling System (GE 47716 Fill) .
Disconnect the coolant heater power supply cord from the coolant heater.

Fig 1: View Of Coolant Heater (L66)

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: A residual amount of coolant will drain from the engine block.

Remove the coolant heater and washer from the engine block.