NHTSA Complaint #11034520 — 2009 GMC SIERRA 1500

AT AROUND 100,000 MILES, THE CHECK ENGINE LIGHT WOULD COME ON AND INDICATE LOW OIL PRESSURE. CHANGING THE SENSOR OUT DID NOT EFFECT THE SITUATION. CHANGING THE OIL WOULD HELP BUT USUALLY ONLY FOR AROUND 3,500 MILES. THE ENGINE WAS LOSING OIL MORE THAN IT SHOULD. THEN AT AROUND 129,000 MILES, THE TRUCK STARTING SHAKING BECAUSE OF THE ENGINE AND THE CHECK ENGINE LIGHT CAME ON. IT WAS DETERMINED TO BE A CYLINDER 7 MISFIRE. CHANGING THE COIL PACK, SPARK PLUG, AND SPARK PLUG WIRE DID NOTHING. IT WAS DETERMINED THAT THE ENGINE WAS IRREPARABLE AND NEEDED REPLACING. UPON RESEARCH, IT APPEARS THAT THIS IS A FAIRLY COMMON PROBLEM AMONG 2008-2012 GM ENGINES WITH THE AFM SYSTEM. GM SHOULD ABSOLUTELY ISSUE A RECALL AND REPAIR THESE DEFECTIVE ENGINES OR OTHERWISE REIMBURSE THE OWNERS FOR THE REPAIRS.