NHTSA Complaint #10908913 — 2007 CHEVROLET AVALANCHE 1500

THE VEHICLE, FROM THE TIME IT WAS NEW, HAD USUALLY CONSUMED ABOUT 0.5 QUARTS OF OIL EACH OIL CHANGE, WHICH I WOULD CONSIDER NORMAL. THIS CONDITION BEGAN TO WORSEN AT APPROXIMATELY 60,000 MILES TO ABOUT 1.0 QUARTS PER OIL CHANGE. THIS CONDITION CONTINUED TO WORSEN, AND AT APPROXIMATELY 85,000 MILES BEGAN TO CONSUME 1 QUART OF OIL EACH 1,500 MILES IN CITY DRIVING, AND CLOSER TO 1,000 MILES WITH SIGNIFICANT HIGHWAY DRIVING. I CONTACTED THE DEALERSHIP REGARDING THIS ISSUE, AND THEY REPLIED THAT THIS AMOUNT OF OIL CONSUMPTION WOULD BE CONSIDERED NORMAL. BETWEEN 85,000 AND 135,000 MILES I HAVE REPLACED SPARK PLUGS TWICE. IN EACH INSTANCE THE PLUGS WERE FOULED AND WET WITH OIL. THE IGNITION COILS WERE REPLACED ON MULTIPLE CYLINDERS AT THE TIME OF THE FIRST SPARK PLUG CHANGE. AS COMPARED TO THE OWNERS MANUAL, THE SPARK PLUGS SHOULD ONLY REQUIRE SERVICE EVERY 100,000 MILES. I HAVE SINCE CONTACTED THE DEALERSHIP REGARDING THIS ISSUE, AND THEY CONTINUE TO REPLY THAT THE AMOUNT OF OIL CONSUMPTION I EXPERIENCE IS NORMAL. I HAVE OWNED MORE THAN 10 VEHICLES OVER THE COURSE OF +30 YEARS AND NEVER HAD AN ENGINE CONSUME OIL AT THIS RATE. THIS AMOUNT OF USE IS NEITHER NORMAL NOR GOOD FOR THE ENVIRONMENT.