Manifold/header/muffler/tail Pipe problems of the 2010 Chevrolet Traverse

I am writing because I have had this vehicle a little over 1 year and put less than 18,000 miles on it and yet it is constantly in the shop for costly repairs. I am currently wondering where drivetime sources these vehicles from because a used car should not have to be in the shop as much as my car is especially when drivetime's chosed extended warranty company aeverex only wants to pay for repairs that they deem fair to pay for which is a disadvantage for a buyer such as myself. I have consistently paid my note on time and got the run around for 2 weeks on the last repairs that aeverex took their time addressing. I don't mind making minor repairs like tires or maybe a hole in the muffler but to have to replace a timing chain within a week of the purchase and an engine flywheel and starter in barely a year of the purchase makes it seem as if these cars were broken down before being sold to unsuspecting customers such as myself by drivetime and their refusal to assist to the customers in their time of need makes it seem as if they were intentional on getting these damaged goods off of their hands. I am filing this formal complaint with the national highway traffic safety administration because this is an important issue as my car has stopped in the middle of oncoming highway traffic and I could have been killed. This vehicle is a true lemon and I only wished that I had done more research on drivetime before purchasing from them. I have had to replace wipers in the first month in addition to the timing chain and tires the next month, front brake lights, back brake lights, a flexplate, a flywheel, and multiple other repairs. Please respond and offer some type of assistance.