2004 CADILLAC ESCALADE EXT Engine Problems

I DISCOVERED BROKEN/MISSING EXHAUST MANIFOLD BOLTS AT 107K MILES ALTHOUGH I SUSPECT THEY HAVE BEEN MISSING FOR QUITE SOME TIME. I WAS MADE AWARE OF THE PROBLEM BY OTHER CADILLAC, CHEVY, AND GMC OWNERS WITH THE 6.0L ENGINE. UPON HEARING ABOUT THIS ISSUE I INSPECTED MY VEHICLE TO FIND THAT I HAVE MISSING/BROKEN EXHAUST MANIFOLD BOLTS TOO. THIS IS A MAJOR SAFETY CONCERN AS WELL AS EMISSIONS. MANY OWNERS OF THESE VEHICLES WITH THIS ENGINE HAVE HAD MULTIPLE MISSING OR BROKEN MANIFOLD BOLTS, MANY AT MILEAGES OF LESS THAN 50K. EXHAUST TEMPERATURES AT THE EXHAUST MANIFOLD AVERAGE 1200 DEGREES FAHRENHEIT. GASOLINE HAS AN IGNITION TEMPERATURE OF ABOUT 500 DEGREES FAHRENHEIT. WHEN EXHAUST MANIFOLD BOLTS BREAK OR BECOME MISSING THE SEAL IS COMPROMISED BETWEEN THE EXHAUST MANIFOLD AND THE EXHAUST PORT ON THE ENGINE CYLINDER HEAD ALLOWING THESE EXTREMELY HOT EXHAUST GASES TO COME INTO CONTACT WITH MULTIPLE COMPONENTS IN THE...