GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Optra 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Engine Coolant Temperature Sensor Replacement

Removal Procedure

    Object Number: 1701077 Size: SH
  1. Relieve the coolant system pressure.

    2. Caution: Refer to Battery Disconnect Caution in the Preface section.

  2. Disconnect the negative battery cable.
  3. Disconnect the engine coolant temperature (ECT) sensor connector.

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

  4. Remove the ECT sensor from the electronic ignition (EI) system ignition coil adapter.

Installation Procedure

    Object Number: 1701077 Size: SH
  1. Coat the threads of the ECT sensor with sealer.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the ECT sensor into the EI system ignition coil adapter.

    3. Tighten
    Tighten the ECT sensor to 20 N·m (15 lb ft).

  3. Connect the ECT sensor connector.
  4. Fill the coolant system.
  5. Connect the negative battery cable.