I HAVE A 1997 GRAND PRIX WITH A 3.8 LITER V6 THAT HAS A LEAKING INTAKE MANIFOLD WHICH I HAVE BEEN TOLD IS A COMMON PROBLEM. THE CAR LEAKS ABOUT A QUART OF COOLANT A MONTH AND I HAVE BEEN TOLD THAT IT IS GOING TO GET WORSE QUICKLY IF I DON'T HAVE IT REPAIRED. IT IS MY UNDERSTANDING THAT LOSS OF COOLANT COULD LEAD TO COMPLETE ENGINE FAILURE. DOING SOME RESEARCH, I SEE THERE ARE NUMEROUS COMPLAINTS ON THIS ISSUE. IT IS A VERY EXPENSIVE REPAIR THAT IS REQUIRED DUE TO A DESIGN FLAW RATHER THAN WHAT I WOULD CONSIDER WEAR.