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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:

DIC Operation and Displays
The DIC has different displays which can be accessed by using the DIC buttons on the turn signal lever on the left side of the steering wheel. The DIC displays trip, fuel, and warning messages if a system problem is detected. See Trip Computer  and Vehicle Messages. DIC Buttons 1. SET/C ...

Remote Keyless Entry (RKE) System Operation
The RKE transmitter may work up to 60 m (195 ft) away from the vehicle. Other conditions can affect the performance of the transmitter. See Remote Keyless Entry (RKE) System. RKE without Remote Start Shown The following buttons are on the transmitter: ...

Rear Side Door Outer Panel Replacement
Removal Procedure Warning: Refer to Glass and Sheet Metal Handling Warning. Note: According to different corrosion warranties, only the regional mandatory joining methods are allowed. Disable the SIR System. Refer to SIR Disabling and Enabling. Dis ...

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