NHTSA Complaint #10633824 — 2010 CHEVROLET SILVERADO 1500

EXCESSIVE OIL CONSUMPTION CAUSED SPARK PLUGS TO PREMATURELY FAIL CAUSING THE ENGINE TO MISFIRE AND RUN ROUGH. SPARK PLUGS FROM CYLINDERS #1 AND #7 WERE FOUND OIL FOULED AND/OR CRACKED. PER SERVICE BULLETINS ISSUED BY GENERAL MOTORS, THE DEALERSHIP REPLACED THE SPARK PLUGS AND MADE VARIOUS OTHER REPAIRS RELATED TO THE OIL CONSUMPTION PROBLEMS CAUSED BY THE ACTIVE FUEL MANAGEMENT SYSTEM. INITIAL REPAIRS DID NOT CORRECT THE OIL CONSUMPTION PROBLEM (1/2 QUART BURNED IN APPROXIMATELY 1,000 - 2,000 MILES) AND OIL WAS VISIBLE ON THE NEW SPARK PLUGS WITHIN 1,000 MILES OF AFM REPAIR WORK. I WAS TOLD THIS WAS "NORMAL" ACCORDING TO GENERAL MOTOR'S STANDARDS. THE DEALERSHIP/GM CUSTOMER SERVICE AGREED TO MAKE ADDITIONAL REPAIRS TO REPLACE THE TRUCKS PISTONS AND RINGS TO SEE IF THAT WOULD CORRECT THE OIL CONSUMPTION PROBLEM BUT NO DEFINITE OR LONG-TERM SOLUTION HAS BEEN INDICATED TO CORRECT THE SOURCE OF THE AFM/OIL CONSUMPTION ISSUE. THE SUCCESS OF THE MOST RECENT REPAIRS IS PENDING. *TR