2003 Chevrolet Chevy Van

WE HAVE A 2003 CHEVROLET VENTURE VAN V6 3.4L, ODOMETER-49698. VEHICLE MADE AN ODD SOUND WHEN STARTING. THIS SOUND HAPPENED SUDDENLY. WE TOOK IT TO THE CLOSEST AUTOMOTIVE REPAIR SHOP THEIR COMPUTER INDICATED A MISFIRE CODE AND THEY SUGGESTED CHANGING THE PLUGS. WE OPTED TO TAKE THE VAN TO OUR MECHANIC. THEY CHECKED THE PLUGS AND THEY LOOKED BRAND NEW AND WERE IN GOOD CONDITION. THE FOLLOWING DESCRIPTION IS STRAIGHT FROM THE SERVICE ADVISOR OF THE AUTOMOTIVE SHOP : ONE CYLINDER ONLY HAS 35 PSI AND THERE IS A TAPPING NOISE IN THE TOP HALF OF THE ENGINE. WILL NEED TO TEAR THE UPPER END DOWN FOR INSPECTION (UPPER AND LOWER INTAKES AND THE VALVE COVER GASKET). THE REAR CYLINDER HEAD ON THE #3 CYLINDER, THE STUDS THAT HOLD THE ROCKER ARMS HAVE PULLED OUT OF THE HEAD. THE MACHINE SHOP FOUND THE THREADS FOR THE ROCKER ARM STUDS ON THE REAR CYLINDER HEAD WERE PULLING OUT. HAD TO HAVE ALL THE ROCKER ARM STUDS HOLES REPAIRED. BASED ON THE MACHINE SHOP'S ADVICE THE FRONT CYLINDER HEAD WAS REMOVED AND TO HAVE THE ROCKER ARM STUD HOLES INSPECTED. THEY WERE ALSO FOUND TO BE PULLING OUT. ALL STUD HOLES ON THE FRONT CYLINDER HEAD WERE REPAIRED. REINSTALLED THE CYLINDER HEADS AND INTAKES. ALL IN ALL START TO FINISH THE REPAIR BILL WAS A RIDICULOUS $2609.48 AND A VEHICLE WITH LESS THAN 50K MILES. THE DEALERSHIP REFUSED TO LISTEN TO ANY COMPLAINTS, SIMPLY SAYING THE VEHICLE IS OUT OF WARRANTY. THE AUTOMOTIVE REPAIR SHOP IS THE SAME PLACE WHERE WE HAVE ALL OUR OIL CHANGES PERFORMED. THEY HAVE ALL THE RECORDS. AMAZING THIS IS THE FOURTH STRAIGHT GM VEHICLE WE HAVE BOUGHT. BASED ON THE WAY WE WERE TREATED BY THE DEALER WE WILL NEVER BUY ANOTHER GM VEHICLE. *JB