Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Yukon XL, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.

Fig 1: View Of Ignition Coil, ECT And MAP Sensor Electrical Connectors

Courtesy of GENERAL MOTORS CORP.

Drain the cooling system to a level below the engine coolant temperature (ECT) sensor. Refer to Draining and Filling Cooling System in Engine Cooling.
Disconnect the ECT sensor electrical connector (3).

Fig 2: View Of ECT Sensor Electrical Connector At Oil Fill Tube Bracket

Courtesy of GENERAL MOTORS CORP.

Remove the ECT sensor electrical connector from the oil fill tube bracket.

Fig 3: View Of ECT Sensor

Courtesy of GENERAL MOTORS CORP.

Remove the ECT sensor.