2011 Chevrolet Suburban Engine Problems

EXCESSIVE OIL CONSUMPTION. I SEE THIS IS A COMMON PROBLEM ON GM VEHICLES AND IT AFFECTS BOTH MY 2011 SUBURBAN AND 2012 SILVERADO WITH 5.3 FLEX FUEL ENGINES. THE SUBURBAN IS MORE NOTICEABLE SINCE WE USE IT FOR LONG ROAD TRIPS. THE TRUCK IS MOSTLY CITY DRIVING. I BELIEVE THIS TO BE CAUSED BY THE AFM AND PCV. I WILL BE INSTALLING THE UPGRADED VALVE COVER IN HOPES OF PREVENTING A MAJOR ENGINE FAILURE IN THE FUTURE. IT WOULD BE NICE IF GM RECALLED THESE ENGINES WITH AN ADEQUATE FIX. I ONLY NOTICE BURNING OIL ON STARTUP COMING FROM THE EXHAUST. CURRENT MILEAGE ON THE SUBURBAN IS 104,000. I HAVE NOT TOUCHED ANYTHING IN THE ENGINE BAY OR CABLE COVERS YET. PLEASE RESPOND QUICKLY IF I SHOULD NOT. THANK YOU, [XXX] REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *CC

EXCESSIVE OIL CONSUMPTION

EXCESSIVE OIL CONSUMPTION WHICH GM REFUSES TO FIX UNDER WARRANTY.

ENGINE IDLING LOW, HESITANT AT LOW SPEEDS. CHANGED GAS, NO CHANGE IN HOW THE TRUCK WAS RUNNING. ENGINE LIGHT CAME ON, TOOK TO DEALERSHIP. REPLACED SPARK PLUG THAT WAS MISFIRING DUE TO OIL CONTAMINATION. CLEANED FUEL INJECTORS AND THROTTLE BODY, REPLACED VALVE COVER TO PREVENT THIS FROM OCCURRING A THIRD TIME (HAS HAPPENED TWICE ALREADY AND IN THE LAST NINE MONTHS). TOTAL REPAIR $1173. NOT COVERED BY WARRANTY.

ENGINE WAS IDLING LOW AND HESITATING AT LOW SPEEDS, THEN ENGINE STARTED RUNNING RALLY ROUGH. SERVICE ENGINE LIGHT CAME ON, CHANGED GAS IN VEHICLE, PROBLEM CONTINUED. ENGINE RUNNING REALLY ROUGH AND SERVICE STABILITRACK LIGHT CAME ON. TOOK TRUCK TO DEALERSHIP AND WAS TOLD THE FIRST SPARK PLUG WAS FOULED DUE TO OIL CONTAMINATION AND THAT ENGINE AND FUEL INJECTORS AND THROTTLE BODY NEEDED CLEANING. THIS COST $475 AND WAS NOT COVERED BY WARRANTY.