Great people and service bought car there about 4 or 5 months ago and was told tune up was done before I bought it well if so why did I get the p0300 which has to do with spark plugs now i to redo it along with flex pipe with catalytic converter that I was told 3 months ago nothing to worry about but here I am worrying about it cause it making my engine mess up it I regret buy this equinox come to find out the pipe had nothing to do with it being loud trust worth I don't think so if you were i wouldn't of had this problem how do you miss this being a certified mechanic place this is why my car was loud and was smelling really bad fumes when starting my car and turning on my a/c or heat I'm just on shock this was missed when you all bought the vehicle before I purchased it maybe be a little more better at looking over things