2004 GMC Yukon

WE HAVE A 2004 GMC YUKON. SINCE WE'VE HAD IT, REDUCED ENGINE POWER HAS BECOME A CONSTANT AND DANGEROUS PROBLEM. MOST RECENTLY, YESTERDAY, MY HUSBAND WAS TRYING TO ACCELERATE TO PASS A SLOWER VEHICLE WITH HUGE TIRES ON THE BACK ONLY TO HAVE THIS HAPPEN. IF SOMEONE HAD BEEN BEHIND US, WE WOULD HAVE BEEN HIT, SERIOUSLY INJURED, MAYBE EVEN DEAD WITH SOME OF THE CIRCUMSTANCES WE HAVE HAD ON THE INTERSTATE. TODAY IS AUGUST 23, 2011. WE HAD THIS VEHICLE FIXED ON JULY 28, 2011, PAYING ALMOST $600 FOR IT TO BE TAKEN CARE OF. IT SAYS ON THE TICKET THAT WE TOLD THEM ABOUT IT AND WERE UNDER THE IMPRESSION THIS WOULD TAKE CARE OF IT. THEY REPLACED THE ACCELERATOR PEDAL ASSEMBLY, WHICH I BELIEVE INCLUDED THE APP SENSOR, AND CLEANED THE THROTTLE BODY OF EXCESSIVE CARBON BUILD UP. AFTER SPENDING $500-600, I WANT TO KNOW WHY WE ARE STILL HAVING THIS PROBLEM ALONG WITH SO MANY OTHERS I HAVE SEEN COMPLAIN ABOUT IT ONLINE? GMC HAS A KNOWN PROBLEM THAT NEEDS TO BE RESOLVED. *TR

ONE SIDE OF ENGINE BLOCK IS BURNING OUT ALL 4 SPARK PLUGS; NEED DIAGNOSTIC INFORMATION SENT TO OUR MECHANIC SO HE CAN FIX THIS PROBLEM. NO RESPONSE. ENGINE LIGHT IS ON. TOTAL MILEAGE ON 2004 YUKON LL PURCHASED FROM DAVE SMITH AUTO, KELLOG IDAHO IN NOV OF 2004 IS 1,292. YES, THIS IS CORRECT. ONE THOUSAND TWO HUNDRED AND NINETY TWO MILES! I WOULD THINK GMC OR DAVE SMITH WOULD BE INTERESTED IN FIXING THIS PROBLEM ESPECIALLY WITH A NEW VEHICLE. WAITING FOR THEM TO REPLY TO WARRANTY WORK. WE ARE A REMOTE SITE WOMEN'S SHELTER. WE NEED A VEHICLE THAT RUNS! *JB

THE PROBLEM I'M HAVING IS A HORRIBLE BUBBLING OR GARGLING SOUND EMMITING FROM MY 2004 YUKON EXHAUST. IT SOUNDS REALLY BAD, ENOUGH TO TURN PEOPLES HEADS WHILE I'M SITTING AT THE CONVENEIENCE STORE OR A DRIVE THRU. THE DEALER IN WHICH I BOUGHT IT FROM STATES THAT THEY ALL MAKE THIS SOUND, BUT I'M NOT STUPID. I KNOW OTHERS WITH THE SAME MAKE AND YEAR MODEL AND THEY DO NOT HAVE THIS PROBLEM. I JUST WANT IT FIXED. IF I'M WILLING TO PAY $44,000 FOR A VEHICLE I EXPECT IT TO LOOK AND SOUND GREAT OR AT LEAST LOOK AND SOUND LIKE A NEW ONE. PLEASE HELP! *AK

WHEN MY 2004 GMC YUKON WARMS UP, A LOUD REPETITIVE CLANGING NOISE EMINATES FROM THE EXHAUST SYSTEM. THIS CAN BE HEARD WHILE DRIVING AND CONTINUES FOR A PERIOD AFTER THE VEHICLE IS TURNED OFF. THE YUKON WAS PURCHASED NEW ON 5/31/04 AND BEGAN MAKING THE NOISE WITHIN 500 MILES. GMC SAYS ENGINEERING HAS BEEN WORKING ON THE PROBLEM SINCE 11/03 AND IT INVOLVES METAL IN THE EXHAUST SYSTEM BEING DEFORMED BY THE HEAT. I HAVE SPOKEN WITH SEVERAL OTHER YUKON OWNERS AND MADE A POINT TO LISTEN TO OTHER YUKONS ON THE ROAD AND HAVE NOT FOUND ANOTHER YUKON EXHIBITING THE SAME PROBLEM. GMC REFUSES TO REPLACE THE EXHAUST SYSTEM. IF THE METAL IS DEFORMED, HOW DO I KNOW THAT IT IS NOT LEAKING FUMES INTO THE PASSENGER COMPARTMENT?