is there any tye of head gasket seal product on the market available for my 2002 DTS that works.
No. There is no product in a bottle that will fix a blown head gasket if indeed that is what the problem is
The Northstar engine that is in your car is known to have headgasket issues and fairly common. Usually there is a fix for your motor using new/different studs, but you will have to tear into the motor. No easy fix as David posted!
just take the heads off, take them to a machine shop, they will check the surface for warping, put new valves and valve guides in while you're at it, take the newly worked heads and slap 'em back on! Sound easy? no,it can quickly turn into a nightmare- better have a good technician fix it, the right way, and pay for the premium repair, or, what's the alternative? Put it in your front yard, fill it with water, and you have a stylish new bird bath!
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