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Home >> Hummer >> 2009 >> H3 Alpha >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Engine Controls And Fuel - 5.3L, 6.0L & 6.2L - Repair Instructions) >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Installation Procedure
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Installation Procedure

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CAUTION:

Do not insert any tools into the throttle body bore in order to avoid damage to the throttle valve plate.

CAUTION:

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

    Fig 1: Engine Coolant (ECT) Sensor
    GM855737Courtesy of GENERAL MOTORS CORP.
  1. If installing the old sensor, coat the threads with sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent.
    2. CAUTION:

    Refer to Fastener Caution .

  2. Install the ECT sensor and tighten to 20 N.m (15 lb ft).
    3. Fig 2: Engine Wiring Harness, Clip, Bolt And Connectors
    GM1696914Courtesy of GENERAL MOTORS CORP.
  3. Connect the engine wiring harness electrical connector (2) to the ECT sensor.
  4. Refill the cooling. Refer to Cooling System Draining and Filling (Static Fill) .
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