I HAVE REPLACED THE RADIATOR TWICE, THE WATER PUMP TWICE (GOING ON NUMBER 3 TOMORROW) AND ALSO GET TO DO AN INTAKE MANIFOLD GASKET. I OWN A 2001 PONTIAC GRAND AM. THE CAUSE HAS SINCE BEEN DISCOVERED AS THE DEX-COOL COOLANT THAT GM MANUFACTURES WHICH EATS ANYTHING IT COMES IN CONTACT WITH. RECALL NEEDS ISSUED, AND REPAIR WORK PAID FOR. *TR