Clogged radiator

Asked by Jun 02, 2018 at 03:32 AM about the 2001 Pontiac Grand Prix

Question type: Maintenance & Repair

I have a 2001 Pontiac Grand Prix radiator
drain plug is clogged how can I drain and
flush the radiator

3 Answers


Have you tried using a pick to poke the hole? If it doesn’t work, i’d disconnect the lower radiator hose at the radiator and flush it out that way.

1 people found this helpful.

You might be able to poke gently in the hole with an object if the drain plug is off. If it has a top cap vs. just an overflow tank you could siphon the coolant out. Sometimes there is so much scale build up your better off putting a new radiator in.

1 people found this helpful.

Agree. Take the plug out and clear it with a small screw driver or piece of wire. The sediment will be soft and easily cleared out of the opening.

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