2005 GMC Yukon Denali

I AM ONE OF THE MANY REPORTING BROKEN EXHAUST MANIFOLD BOLTS ON MY TRUCK. I HAD 3 STUDS RATTLE OUT, 2 BREAK OFF INSIDE HEAD GASKET AND ONLY 1 REMAIN IN TACT. TRUCK IS IN GREAT CONDITION OTHERWISE AND HAS HAD EXCELLENT SERVICE RECORD. ONLY PROBLEM NOW IT IS COSTING ME $2500 TO PULL ENGINE AND SEND IT TO A MACHINE SHOP TO HAVE THE FINAL STUD REMOVED FROM HEAD WITH ONLY 170000 KM'S ON IT THIS IS LUDICROUS. I AM A VERY UNHAPPY CUSTOMER THAT THIS IS NOT A RECALL AS IT HAPPENS TO ALMOST ALL OF THESE TRUCKS BETWEEN 09 AND 2007. AND IT IS A FIRE HAZARD AS WELL AS BAD FOR EMISSIONS HTTP://WWW.YOUTUBE.COM/WATCH?V=0YG6WLBNZGI&FEATURE=EMAIL&EMAIL=COMMENT_REPLY_RECEIVED

1999 TO PRESENT 4.8,5.3 5.7,6.0 LITER ENGINES FROM GM HAVE INFERIOR GRADE METAL IN THE EXHAUST MANIFOLD BOLTS CAUSING THEM TO BREAK. THE VEHICLES WILL HAVE EXHAUST LEAKS AND FALSE READINGS TO THE OXYGEN SENSORS.THE EXHAUST LEAKS OF RAW EXHAUST GASES IN TO THE ATMOSPHERE TRANSLATE TO EXTRA POLLUTION INTO THE ATMOSPHERE FROM ALL THESE VEHICLES . THE OTHER MATTER IS THAT THE COMPUTER ON THE VEHICLES ISN'T GIVEN THE CORRECT OXYGEN SENSOR READING BECAUSE OF THE LEAKS ,EITHER GAS LEAKING OUT OR AIR BEING DRAWN INTO THE EXHAUST STREAM CAUSING THE PREMATURE FAILING OF CATALYTIC CONVERTERS. THE COMPUTER ON THE VEHICLES MAY OR MAY NOT WARM THE CUSTOMERS WITH A LIGHT BASED ON THE SEVERITY OF THE EXHAUST STREAM LEAK GM PUT OUT REPLACEMENT BOLTS FOR THIS PROBLEM ,BUT THAT ONLY FIXES THE PEOPLE'S THAT HAVE THE TIME AND OR RESOURCES TO VISIT THE GM DEALERS. ALL THE REST OF THE VEHICLES AND THEIR OWNERS ARE RESPONSIBLE FOR GETTING THE OLD BOLTS DRILLED OUT AND TRYING TO GET THE VEHICLES FIXED ON THEIR OWN. LOTS OF POLLUTION TAKING PLACE AND MONEY BEING SPENT ON A PROBLEM THAT COULD HAVE BEEN AVOIDED WITH SOME PROPER GRADE FASTENERS. AND THIS IS ON ABOUT 12,000,000 CARS TRUCKS AND SUVS. THIS IS BEING WRITTEN FROM SOMEONE WHO HAS HAD 25+ CARS AND HAS AN AUTOMOTIVE ENGINEERING BACKGROUND. AND SOMEONE WHO SPENT MONEY AND PRECIOUS TIME ON THIS ISSUE AND REALLY SHOULD NOT HAVE HAD TO. *TR

2 BOLTS HOLDING THE MANIFOLD TO THE 6 L ENGINE OF MY YUKON DENALI 2005 ARE BROKEN. THERE IS CONSEQUENTLY GAS EMISSION LEAK AT THE SOURCE, NOT COMPLYING TO RESOURCE EMISSION LAWS, POTENTIAL DAMAGE TO THE CATALYSOR. AT THE GARAGE, EXTENDED WARRANTY REFUSED TO COVER THE BOLT AND WORK (BUT THE MANIFOLD IS) ONE OF THE BOLT CAN NOT BE DRILLED BY THE OUTSIDE (NO SPACE) AND HAS TO BE REMOVE BY REMOVING THE HEAD COVER. I AM LOOKING AT A 10 HOURS ESTIMATE OF LABOR. *TR

EVER SINCE I BOUGHT IT IN OCT 2004, I FELT THIS JUMPING OF THE TRUCK AFTER I STOPPED AND STARTED TO ACCELERATE IT WOULD DO THIS, I CALLED IN AND THEY TOLD ME THAT MAYBE BECAUSE IT WAS NEW, IT MAY BE DOING THAT , I TOOK IT IN LAST WEEK BECAUSE THE ENGINE LIGHT WAS LIT AND THERE WAS A STRANGE BURNING SMELL ON , IT AND THERE WAS ALSO THE RECALL OF THE BACK SEATS, AND A LIGHT SENSOR LOOSE, IT WAS RETURNED TO ME AFTER A FEW DAYS, AND THEY SAID THAT IT WAS BECAUSE THE GAS CAP WAS LOOSE? THAT WAS THE WORST EXCUSE THAT I HAVE HEARD, I AM STILL HAVING THAT PROBLEM, BUT I JUST DON'T WANT TO TAKE IT ANYMORE BECAUSE THEY ARE GOING TO COME OUT WITH THE SOME LAME EXCUSE , AND STILL HAVE THE PROBLEM. *JB