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To flush the radiator on a 2000 Pontiac Montana, start by ensuring the engine is cool and then locate the radiator drain valve at the bottom of the radiator. Open the drain valve and allow the old coolant to drain into a suitable container. Next, close the drain valve, fill the radiator with a radiator flush solution and water, run the engine for about 10-15 minutes with the heater on, then drain again. Finally, refill the radiator with fresh coolant and check for any leaks.

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2w ago

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