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:
Rear Side Door Window Regulator Replacement (Sedan)
Rear Side Door Window Regulator Replacement
Callout
Component Name
Warning: Refer to Glass and Sheet Metal Handling Warning.
Preliminary Procedure
Remove the front side door window from the guide. Do Not remove ...
Positive Crankcase Ventilation Pipe Removal
Open the 2 positive crankcase ventilation pipe retainer clips (2) and (3).
Note: Move retainer clamp (1) in direction of the arrow.
Remove the positive crankcase ventilation pipe from the intake manifold.
Loosen the charger air bypass val ...
Fuel Tank Fuel Pump Module Replacement
Special Tools
EN-48279 Fuel Sender Lock Ring Tool
For equivalent regional tools, refer Special Tools.
Removal Procedure
Relieve the fuel system pressure. Refer to
Fuel Pressure Relief
Remove the fuel tank. Refer to
Fuel Tank Replacement.
Disconnect the elect ...
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