GM Service Manual Online
For 1990-2009 cars only

Engine Coolant Temperature Sensor Replacement for Generic Unit Repair 1999

Removal Procedure

  1. Remove the negative battery cables.
  2. Drain the cooling system below the level of the sensor.

  3. Object Number: 26963  Size: SH
  4. Remove the electrical connector by releasing the locking tab.

  5. Object Number: 26943  Size: SH
  6. Remove the sensor.

Installation Procedure


    Object Number: 263631  Size: SH
  1. Install the sensor into the engine.
  2. Tighten
    Tighten the sensor to 25 N·m (18 lb ft).


    Object Number: 26963  Size: SH
  3. Install the electrical connector.
  4. Refill the coolant system.
  5. Install the negative battery cables.