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Chevrolet Sonic Repair Manual: Engine Coolant Thermostat Replacement (LUW)

Chevrolet Sonic Repair Manual / Powertrain / Engine / Engine Cooling / Thermostat / Engine Coolant Thermostat Replacement (LUW)

Removal Procedure

    Warning:

    Refer to Battery Disconnect Warning.

  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Drain the coolant. Refer to Cooling System Draining and Filling.


  3. Disconnect the engine wiring harness connector (1) and retainers (2).

  4. Remove the wiring harness bracket nut (3) and bracket (4).

  5. If equipped, disconnect the thermostat heating element sensor (1) and remove the radiator inlet hose (2).

  6. Remove the thermostat housing retaining bolts (1).

  7. Remove the thermostat (1) and discard the seal (2).
Installation Procedure

    Fit the thermostat (1) to the thermostat housing using a NEW seal (2).
  1. Fit the thermostat (1) to the thermostat housing using a NEW seal (2).

    2. Caution:

    Refer to Fastener Caution.

  2. Install the thermostat (2) and tighten the thermostat bolts (1) to 10 Y (89 lb in)

    .



  3. Install the radiator inlet hose (2) and connect the thermostat heating element sensor (1).

  4. Install the wiring harness bracket (4) and tighten the nut (3) to 10 Y (89 lb in)

    .



  5. Connect the engine harness connector (1) and harness retainers (2) to the bracket.
  6. Refill the engine cooling system. Refer to Cooling System Draining and Filling.
  7. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  8. Start the engine and check for coolant leaks.
Engine Coolant Thermostat Replacement (LUV)
Removal Procedure Drain the cooling system. Refer to Cooling System Draining and Filling. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement. ...

Engine Coolant Thermostat Housing Installation
Caution: Refer to Engine Coolant Thermostat Housing Caution. Clean sealing surface. Install a NEW engine coolant thermostat housing seal. Install the engine coolant thermosta ...

Other materials:

Engine Coolant Thermostat Housing Replacement (LUW)
Removal Procedure Remove the battery tray. Refer to Battery Tray Replacement. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle. Drain the cooling system. Refer to Cooling System Draining and Filling. Disconnect the engine harness conn ...

Ignition Coil Removal
Special Tools EN-6009 Remover and Installer Ignition Module For equivalent regional tools, refer to Special Tools. Remove the 2 ignition coil bolts (1). Install EN-6009 remover and installer  (2) and remove the ignition coil (1). ...

Drive Belt Installation
Special Tools EN-955 Locking Pins EN-48488 Holding Wrench For equivalent regional tools, refer to Special Tools. Note: Ensure that the drive belt tensioner is held with EN-955?E locking pin. Install the drive belt. Move the drive belt tensioner clockwise until EN- ...

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