Chevrolet Sonic Repair Manual: Coolant System Flushing

Chevrolet Sonic Repair Manual / Powertrain / Engine / Engine Cooling / Information / 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

...

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:

Radio Programming and Setup
Note: DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration software, the ECU will not control all of the vehicle features properly. Ensure the programming tool is ...

Instrument Panel Fuse Block Access Hole Cover Replacement (With AAL)
Instrument Panel Fuse Block Access Hole Cover Replacement Callout Component Name 1 Instrument Panel Fuse Block Access Hole Cover Procedure Grasp the lower edge of the fuse block cover and pull outward disengaging ...

Ignition and Start Switch Housing Replacement
Ignition and Start Switch Housing Replacement Callout Component Name Preliminary Procedures Remove the theft deterrent module. Refer to Theft Deterrent Module Replacement. Remove the turn signal switch bracket. Refer to T ...

0.0091