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 MANUALSCHEVROLET2002MONTE CARLO V6-3.4L VIN EREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTCOOLING SYSTEMSERVICE AND REPAIRFLUSHING THE COOLING SYSTEM
2002 Chevrolet Monte Carlo V6-3.4L VIN E
Flushing the Cooling System
2002 Chevrolet Monte Carlo V6-3.4L VIN ESECTION Flushing the Cooling System
Flushing
Important: Do not use a chemical flush.
Store used coolant in a properly labeled container. 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. When the cooling system becomes contaminated, the cooling system should be flushed thoroughly to remove the contaminants before the engine is seriously damaged.
1. Drain the cooling system.
2. Remove the coolant recovery reservoir.
3. Clean and flush the coolant recovery reservoir with clean, drinkable water.
4. Install the coolant recovery reservoir.
5. Follow the drain and fill procedure using only clean, drinkable water.
6. Run the engine for 20 minutes.
7. Stop the engine.
8. Drain the cooling system.
9. Repeat the procedure if necessary, until the fluid is nearly colorless.
10. Fill the cooling system.
Important: Do not use a chemical flush.
Store used coolant in a properly labeled container. 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. When the cooling system becomes contaminated, the cooling system should be flushed thoroughly to remove the contaminants before the engine is seriously damaged.
1. Drain the cooling system.
2. Remove the coolant recovery reservoir.
3. Clean and flush the coolant recovery reservoir with clean, drinkable water.
4. Install the coolant recovery reservoir.
5. Follow the drain and fill procedure using only clean, drinkable water.
6. Run the engine for 20 minutes.
7. Stop the engine.
8. Drain the cooling system.
9. Repeat the procedure if necessary, until the fluid is nearly colorless.
10. Fill the cooling system.
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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.