1999 Chevy Tahoe - must have new radiator installed - radiator damaged by Dexcool used by GM - GM refuses to pay for radiator due to it being a known problem and car was purchased used

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RE: 1999 Chevy Tahoe - must have new radiator installed - radiator damaged by Dexcool used by GM - GM refuses to pay for radiator due to it being a known problem and car was purchased used

I just found out that my 1999 Chevy Tahoe must have a new radiator installed due to the use of Dexcool by GM. I purchased the vehicle last year and purchased a warranty from a third party company.

The company has agreed to pay for a water pump and some other repairs however refuses to replace the radiator due to it being a known GM problem. Is there any way to get GM to pay for the repair? K. English

Virginia