2011 CHEVROLET AVALANCHE 1500 Engine Problems

SERVICE STABILITRAC SYSTEM INDICATION COMES ON, WITH CHECK ENGINE LIGHT, AND ENGINE POWER REDUCED. HAPPENS RANDOMLY, CANNOT FIND A "COMMON CAUSE" SPENT LOTS OF MONEY ON PCM, BCM, MEMORY SEAT MODULE, BATTERY CABLES, BATTERY, BRAKE LIGHT SWITCH, ETC. ETC. DANGEROUS CONDITION WHEN VEHICLE DROPS INTO POWER REDUCTION MODE.

I WAS DRIVING MY TRUCK AT ABOUT 45 MPH WHEN THE TRACTION CONTROL LIGHT CAME ON THE DASH AND MY TRUCK SUDDENLY WENT FROM 45MPH TO 20 MPH AND THE MOTOR BEGAN TO MISS FIRE AND BUCK. IF THERE WOULD HAVE BEEN SOMEONE FOLLOWING ME THEY WOULD OF HIT ME IN THE REAREND DUE TO THE SUDDEN SLOWING OF MY VEHICLE. *TR

AT @4000 MILES ON THE VEHICLE THE ENGINE LIGHT CAME ON. THE DEALERSHIP FOUND THAT THERE WAS NO OIL IN THE ENGINE AND #1 SPARK PLUG WAS BAD. THEY REPLACED THE PLUG & OIL. AGAIN ABOUT ANOTHER 4000 MILE IT DID THE SAME THING. THEY REPLACED THE VALVE GUIDE SEALS, THAT STOPPED THE SPARK PLUG FROM GOING BAD, BUT I HAVE TO PUT A QUART OF OIL IN IT EVERY 3,000 MILES. A VEHICLE USING SYNTHETIC OIL SHOULD GO ABOUT 7,500 MILES OR MORE. THAT MEANS TWO QUARTS OIL BETWEEN CHANGES. THEY CLAIM WITH GENERAL MOTORS THAT IS ACCEPTABLE. I HAVE NEVER OWNED A NEW VEHICLE WHERE I HAD TO ADD OIL BEFORE AND DUE OIL CHANGE. THE SAME VEHICLE HAS SO MUCH WIND NOISE COMING IN AROUND THE DOORS OR WINDOWS IT IS HARD TO HEAR THE RADIO. MY COMPLAINT TO THE DEALER THEIR ANSWER WAS ? THERE ISN?T...