Chevrolet Sonic manuals

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.

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

    .



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

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

    .



  6. Connect the engine harness connector (1) and harness retainers (2) to the bracket.
  7. Refill the engine cooling system. Refer to Cooling System Draining and Filling.
  8. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  9. 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:

Checking Engine Oil
It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. The engine oil dipstick handle is a loop. See Engine Compartment Overview  for the location of the engine oil dipstick. 1. I ...

Air Conditioning Compressor and Condenser Hose Replacement (LUV)
Removal Procedure Recover the refrigerant. Refer to Refrigerant Recovery and Recharging. Remove the drivetrain and front suspension frame skid plate if equipped. Refer to Drivetrain and Front Suspension Frame Skid Plate Replacement. Remove the front fascia assembly. Re ...

Engine Cover Replacement
Engine Cover Replacement Callout Component Name 1 Engine Cover Procedure Use a suitable tool to first unclip the front of the cover, then rotate the cover backward and pull upward to remove. ...

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