2005 Chevrolet Silverado 2500

STOPPED DO TO HEAVY TRAFFIC AND STARTED SMELLING EXHAUST IN CAB. PULLED OFF ON NEXT EXIST OPENED HOOD AND DRIVERS SIDE OF ENGINE WAS SMOKING. COUGHING AND LUNG DISCOMFORT. FOUND SOME SHADE TO LET TRUCK COOL. NOTICED BLACK COLOR ON REAR OF EXHAUST MANIFOLD, LOOKED CLOSER AND MISSING BOLT IN SAME AREA OF MANIFOLD. LOOKING ONLINE LOTS OF COMPLAINTS OF SAME PROBLEM BUT NO RECALLS. SHOULD BE EMISSIONS RECALL AND SAFETY RECALL IN MY CASE. *TR

STOPPED DO TO HEAVY TRAFFIC AND STARTED SMELLING EXHAUST IN CAB. PULLED OFF ON NEXT EXIST OPENED HOOD AND DRIVERS SIDE OF ENGINE WAS SMOKING. COUGHING AND LUNG DISCOMFORT. FOUND SOME SHADE TO LET TRUCK COOL. NOTICED BLACK COLOR ON REAR OF EXHAUST MANIFOLD, LOOKED CLOSER AND MISSING BOLT IN SAME AREA OF MANIFOLD. LOOKING ONLINE LOTS OF COMPLAINTS OF SAME PROBLEM BUT NO RECALLS. SHOULD BE EMISSIONS RECALL AND SAFETY RECALL IN MY CASE. *TR

THIS TRUCK IS EQUIPPED WITH THE 6.0L VORTEC V8 ENGINE AND HAS DEVELOPED AN EXHAUST LEAK ON BOTH SIDES OF THE ENGINE AT THE MANIFOLD GASKETS! THE LEAK IS FROM THE PORTS WHERE THE BOLTS SECURING MANIFOLD TO CYLINDER HEAD ARE BROKEN! GM IS WELL AWARE OF THIS ISSUE, DOES NOT WANT TO RECALL THE ISSUE OR WARRANTY THE REPAIRS. THERE ARE THOUSANDS OF COMPLAINTS FROM OWNERS OF GM VEHICLES WITH V8 ENGINES INCLUDING THE 4.8L, 5.3L, 6.0L ENGINES. THIS IS A PROBLEM IN MANY OF WAYS, MOST IMPORTANTLY THAT TOXIC EXHAUST FUMES ARE EMITTING FROM UNDER THE HOOD AND CAN ENTER THE CAB OF THE VEHICLES! INSPECTION LAWS REQUIRE THAT EXHAUST FUMES EXIT THE VEHICLE BEHIND THE REAR WHEEL! THE OTHER PROBLEMS INCLUDE THE FACT THAT THIS LEAK WILL AFFECT READINGS TAKEN FROM THE UPSTREAM OXYGEN SENSORS AND CAN THEREFORE CAUSE CHECK ENGINE LIGHTS FOR CATALYTIC CONVERTER DEFICIENCIES TO SYSTEM LEAN CONDITIONS. ALSO HAVING AN EXHAUST LEAK WILL FAIL SAFETY INSPECTIONS AND EMISSIONS TESTING. GM IS VIOLATING EPA LAWS BY ALLOWING THIS TO GO ON! THIS PARTICULAR VEHICLE IS PAST DUE FOR INSPECTION AND EMISSIONS AS WE ARE A PENNSYLVANIA RESIDENT AND I CANNOT AFFORD TO HAVE THIS FIXED AT A DEALER! *TR

TL* THE CONTACT OWNS A 2005 CHEVROLET SILVERADO 2500. THE CONTACT STATED THAT EXHAUST FUMES WERE EMITTED FROM THE VEHICLE IN AN UNUSUAL FASHION AND ENTERED INTO THE CABIN OF THE VEHICLE. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE CONTACT WAS INFORMED THAT THE ENGINE MANIFOLD WAS WARPED BECAUSE THE BOLTS WERE CORRODED. THE VEHICLE WAS REPAIRED. THE FAILURE RECURRED APPROXIMATELY TWO YEARS LATER. THE VEHICLE WAS TAKEN BACK TO THE DEALER AND WAS REPAIRED A SECOND TIME FOR THE SAME FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS 87,000. UPDATED 02/14/12*LJ THE CONSUMER STATED HE CORRECTED THE PROBLEM BY USING STAGE 8 BOLTS AND HEADERS. UPDATED 03/16/12

EXHAUST MANIFOLD BOLT HEAD BROKE OFF. 1ST BOLT INITIALLY THEN SECOND BOLT NEXT TO IT BROKE AS WELL. NO WORK HAS BEEN DONE TO MOTOR OR AFTERMARKET PARTS ADDED THAT WOULD AFFECT THIS PART AND CREATE FAILURE. EXHAUST GAS ENTERS THE UNDERHOOD AREA SOMETIME CAN BE SMELLED INSIDE CAB. THE EXHAUST MAKES A BLACK PLUME UP SIDE OF MOTOR. *TR

I TOOK MY 2005 CHEVROLET SILVERADO PICK UP IN FOR A EXHAUST LEAK. THE MANIFOLD BOLTS ROTTED AWAY. 3 BOLTS HOLDING RIGHT AND LEFT EXHAUST MANIFOLDS IN PLACE. VARY VERY UNSAFE, ONE GOOD BUMP IN THE ROAD AND IT WOULD DROP. VEHICLES WITH LESS THAN 30,000 MILES HAVE THE SAME PROBLEM. GM KNOWS ABOUT THE PROBLEM AND SHOULD HAVE CONTACTED IT'S CUSTOMERS. VARY DANGEROUS. FIRE, ACCIDENT OR EXHAUST FUMES. NOT GOOD AT ALL!! *TR