Chevrolet Sonic Repair Manual: Coolant System Flushing
Note:
- Do not use a chemical flush.
- Store used coolant in the proper manner, such as in a used engine coolant holding tank.
- Do not pour used coolant down a drain. Ethylene glycol antifreeze is a very toxic chemical.
- Do not dispose of coolant into the sewer system or ground water. This is illegal and ecologically unsound.
- Various methods and equipment can be used to flush the cooling system. If special equipment is used, such as a back flusher, follow the manufactures instruction. However, always remove the thermostat before back flushing the system.
- Apply the parking brake.
- Drain the coolant. Refer to Cooling System Draining and Filling.
- Fill the cooling system with clean drinkable water. Refer to Cooling System Draining and Filling.
- Start the engine and run at 2,000 RPM until the thermostat opens.
- Turn OFF the engine.
- Drain the coolant system. Refer to Cooling System Draining and Filling.
- Repeat the above procedure until the water from the coolant system is colorless.
- Drain the coolant system. Refer to Cooling System Draining and Filling.
- Repeat the above procedure until the water from the coolant system is colorless. Refer to Cooling System Draining and Filling.
Information
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Cooling System Description and Operation
Cooling System
The cooling system maintains the engine operating temperature at the efficient
level under any speed and operating condition. When the engine is cold, the
cooling system ...
Other materials:
Servicing the Airbag-Equipped Vehicle
Airbags affect how the vehicle should be serviced. There are parts of the airbag
system in several places around the vehicle. Your dealer and the service manual
have information about servicing the vehicle and the airbag system. To purchase
a service manual, see Service Publications Ordering I ...
Special Tools
Illustration
Tool Number/Description
3-9607433
Transmission Support
DT-586
J-23129
KM-586
Universal Seal Remover
DT-3289-20
J-3289-20
Holding Fixture ...
Control Valve Body Cover Installation
Control Valve Body Cover Installation
Callout
Component Name
1
Input Speed Sensor Connector
2
Output Speed Sensor Connector
3
Shift Position Switch Connector
...
0.0059