Engine Clicking And Tapping Noises problems of the 2012 GMC Terrain

My car oil consumption is excessive. I have repetitive codes: p0089, p0300, p0366, p228d, p0014 and the check engine light being on. Car is jerking back and forth when at a stop light. Tapping noise made also. Every 1000-1500 my car is always needing oil (at least 2 quarts) and I also have to put more than the usual amount of gas in it then when I first purchased.

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.

Janurary 7th 2018 my 2012 GMC Terrain ran out of oil even though it was already fixed 6 months prior for special adjustment coverage 16118 which had pistons, piston rings, timing chain etc. Fixed to repair the oil consumption issue (see adjustments 14882 and 16118. Coverage 14882 is a result of failure to correctly fix the 16118 and is a direct result of 14882 and GMC states they will cover me if this happens. GMC customer service says my VIN # is not covered under this coverage. If its the same exact issue for (model/engine) why would VIN # matter? on top of that I took my vehicle to another dealer (dealership b) as I brought my vehicle to lets call it dealership a so many times before with the same issue. Dealership b filled it with oil and sent me on my way. I told them to make sure the issue was fixed. They said they test drove it and everything is fine and they didnt do anything but put oil in it and test. On the way home Jan. 7th the same day the car starting dying on me, stalling and making popping noises and jerking wildly which is why I brought it in the first place. Dealership b knowing dealership a "fixed" this issue 6 months before so they said they would not fix it even though they know for sure this issue was caused by coverage 14882. I told dealership a this and they said they are only going with what GMC says which is that my VIN # is not covered but they were willing to split the cost with me (roughly $850, admitting partial fault, lol) I said no and then pleaded with them that I shouldnt pay anything cause im covered. They ended the conversation with the vehicle is not covered because coverage 16882 is not related in any way to 14882 but even GMC and dealership b says they are directly related. Who is lying here? I pay $450 a month for a giant SUV that sits in my garage. GMC is knowingly breaking the law, how can they do this to so many people?.