Ensure the engine is cool and the vehicle is parked on level ground.
Open the hood and locate the radiator cap; it's usually located on the driver's side of the engine bay.
Remove the radiator cap carefully, using a rag or towel to protect your hands from any hot coolant that might splash out.
Start the engine and let it run for a few minutes until the thermostat opens and the coolant begins to circulate.
As the coolant circulates, air bubbles will rise to the highest point in the cooling system, which is the radiator.
Continue running the engine and keep an eye on the coolant level in the radiator. Add more coolant if necessary to keep the radiator full.
After a few minutes, you should see no more bubbles rising in the radiator. This indicates that the air has been successfully bled from the cooling system.
Turn off the engine and allow it to cool down.
Replace the radiator cap and securely tighten it.
By following these steps, you can effectively bleed the air out of the cooling system of your 1997 Chevy Blazer with a 4.3-liter engine. This will help ensure proper engine cooling and prevent potential overheating issues.
