What is the best product to use to fix a leaking radiator in a 1998 Chevy Tahoe?

Here is the problem, your camaro depends upon a certain amount of pressure in the cooling system in order to function properly, and that is typical for most cars built after the 60's. With a leak, it may never build enough pressure to function properly. Pull the radiator out asap, and get it brazed, or replace the whole radiator.

Do NOT use the leak sealer, it will screw up the water passages in the radiator, and will complicate the eventual repair.

Mikey the old guy is correct in his statement about radiator stop leak, that stuff causes more problems than it fixes. If you have a hole in your radiator it would be wise to replace the unit with a new one, especially if it's original to the car; after all you are driving a 21 year old car.

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