GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 221716  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Open the radiator drain cock. Drain the coolant from the radiator to a level below the coolant level indicator module.
  3. Lower the vehicle.
  4. Remove the battery. Refer to Battery Replacement in Engine Electrical.
  5. Disconnect the electrical connector at the module.
  6. Remove the coolant level indicator module from the radiator.

Installation Procedure


    Object Number: 221716  Size: SH
  1. Install the module to the radiator.
  2. 1.1. Apply lubricant to the O-ring.
    1.2. Align the coolant indicator module to the module port in the radiator.
    1.3. Press the module probe into the radiator module port housing until the retainer spring snaps onto the port flange.
  3. Connect the electrical connector at the module.
  4. Install the battery. Refer to Battery Replacement in Engine Electrical.
  5. Refill the engine coolant. Refer to Cooling System Draining and Filling .