I was looking at the included Services and Procedures for the 30,000 Mile Service and I just wanted to know if I request that some of those included services not be provided will the estimate go down or is it a MUST be provided service. I just ask because I replace my own engine oil and filter and I did it about 1,000 or maybe 2,000 miles ago and its synthetic oil so I am good for another 3,000-4,000 miles. Also I had an issue when I did my tire rotation. I took it to a regular Automotive shop and my truck has tire pressure sensors and when this shop did the tire rotation, a little while after it started giving me an error. I took it to the dealership and they said whoever did it did not do the rotation properly. How will I know that if I take it to a shop as opposed to the dealership that this shop's tech will know how to handle and perform my trucks tire rotation properly and where I will not receive an error message concerning my tires?