Installation Procedure

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

Fig 1: Identifying ECT Sensor

Courtesy of GENERAL MOTORS CORP.

If installing the old sensor(s), coat the threads with sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent.

CAUTION: Refer to Fastener Caution .

Install the appropriate ECT sensor(s) (1) and tighten to 20 N.m (15 lb ft).

Fig 2: Identifying ECT Sensor

Courtesy of GENERAL MOTORS CORP.

Connect the engine wiring harness electrical connector(s) (1) to the appropriate ECT sensor(s).
Fill the cooling system, if necessary. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (Vac N Fill) .
Install the intake manifold tube. Refer to Intake Manifold Tube Replacement (LMM) .