Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2025EQUINOX ACTIV, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 10 (ENGINE HEATING SYSTEM AND ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSFLUSHING
2025 Chevrolet Equinox ACTIV, 4WD
Repair Instructions: Flushing
2025 Chevrolet Equinox ACTIV, 4WDSECTION Flushing
WARNING: This page is about a different car, the 2024 GMC Terrain and 2024 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- When the cooling system becomes contaminated, the cooling system should be flushed thoroughly to remove the contaminants before the engine is seriously damaged.
- This procedure is effective in removing contaminants caused by the use of improper coolants, coolant at the end of its life, or some liquid chemical flushing agents. This procedure is NOT effective for removing debris contamination caused by component failure, or the use of 'stop leak' additives. When the system is contaminated by this type of debris, use the system flow diagrams to identify components that may need replacement to restore proper system flow.
- Do not use chemical flush agents.
- 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 manufacturer's instruction. Always remove the thermostat before flushing the cooling system.
- Drain the cooling system. Cooling System Draining and Filling (Static) .
- Radiator Surge Tank Replacement - Remove
- Clean and flush the radiator surge tank with clean, drinkable water.
- Radiator Surge Tank Replacement - Install
- Follow the drain and fill procedure using only clean, drinkable water. Cooling System Draining and Filling (Static) .
- Run the engine for 20 minutes.
- Stop the engine.
- Drain the cooling system. Cooling System Draining and Filling (Static) .
- Repeat the procedure if necessary, until the fluid is nearly colorless.
- Fill the cooling system. Cooling System Draining and Filling (Static) .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.