NHTSA Complaint #11183888 — 2012 GMC TERRAIN

I'VE HAD THIS VEHICLE FOR 3+ YEARS AND RIGHT FROM THE BEGINNING EVERYTIME I CHANGED THE OIL WAS TOLD IT WAS LOW AND ASKED WHERE IT WAS GOING. MY MECHANIC TOLD ME IT WAS A CRANKSHAFT SENSOR CODE AND JUST CHANGE THE OIL AND SO I DID AND THE CHECK ENGINE LIGHT WOULD GO OFF . THEN ONE DAY 800 MILES BEFORE I'M DUE TO CHANGE THE OIL IT STARTS JERKING WHILE STOPPED AND CHECK ENGINE LIGHT CAME ON DISPLAY STATED ENGINE POWER REDUCED THEN IT KEPT STALLING OUT THEN WHEN I SAW AN AUTOZONE STORE THEY CHECKED THE CODE WHICH WAS THE CAMSHAFT SENSOR AGAIN LIMPED HOME AND DID NOTHING LATER WHEN I STARTED THE VEHICLE TO GO TO WORK IT MADE AN AWFUL CLANGING NOISE AND SHUT IT OFF IMMEDIATELY HAD IT TOWED TO THE DEALERSHIP WHERE THEY SAID IT BLEW A REAR SEAL AND WOULD NEED AN 8400 DOLLAR NEW ENGINE THE SPECIAL WARRANTY COVERAGE IS WELL KNOWN BY THE DEALERSHIPS AND TO GM SO WHY WAS THE CONSUMER NOT BEEN NOTIFIED THAT THIS COULD BE A PROBLEM IF I WAS TOLD ABOUT THIS I WOULD NOT HAVE BOUGHT THIS VEHICLE AND I GUESS THAT'S WHAT THEY WANTED A SALE.NOW I HAVE A VEHICLE THAT I STILL HAVE MONTHLY PAYMENTS AND THEY WANT TO CHARGE ME FOR A NEW ENGINE ON TOP OF IT LUDRICAS I SAY