There are 5 stored owner reports matching the engine leading-label group for the 2011 Chevrolet Suburban in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 5 of 5 matching reports.
Open the full vehicle complaint log (all categories)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.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.