GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Optra - Mexico 🢒 Engine 🢒 Engine Controls and Fuel - 1.8L (L79) 🢒 Crankshaft Position Sensor Replacement

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 1256166 Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the power steering pump, if equipped. Refer to Power Steering Pump Replacement.
  3. Remove the air conditioning (A/C) compressor. Refer to Air Conditioning Compressor Replacement.
  4. Remove the rear A/C compressor mounting bracket bolts and the rear A/C compressor mounting bracket.
  5. Remove the accessory mounting bracket by removing the bolts.

    6. Object Number: 1256167 Size: SH
  6. Disconnect the crankshaft position (CKP) sensor connector.
  7. Remove the CKP sensor retaining bolt.
  8. Gently rotate and remove the CKP sensor from the engine block.

Installation Procedure

    Object Number: 1256166 Size: SH
  1. Insert the CKP sensor into the engine block.

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

  2. Install the CKP sensor retaining bolt.

    3. Tighten
    Tighten the CKP sensor retaining bolt to 8 N·m (71 lb in).


    Object Number: 1256167 Size: SH
  3. Connect the CKP sensor connector.
  4. Install the accessory mounting bracket with the bolts.

    5. Tighten
    Tighten the accessory mounting bracket bolts to 27 N·m (37 lb ft).


    Object Number: 1256169 Size: SH
  5. Install the rear A/C mounting bracket.

    6. Tighten
    Tighten the rear A/C mounting bracket bolts to 35 N·m (26 lb ft).

  6. Install the A/C compressor. Refer to Air Conditioning Compressor Replacement.
  7. Install the power steering pump. Refer to Power Steering Pump Replacement.
  8. Connect the negative battery cable.