So, let me get this straight, you bought it used, gears wine, and it slips out of gear.
It's probably just a linkage adjustment for the slipping out of gear.
As for the noise, guess you missed that on the test drive. Blaming the car for you failing at a test drive is not the cars fault.
Did you check the tranny fluid level? That can cause noise and slipping out of gear.
I'll own up to missing the whine on the test drive..
The slipping out of gear is apparently a well documented issue with these transmission..which I wasn't aware of..until it happened to me.
Unfortunately I keep comparing the compass to the 98 Rav4 it replaced...
The 98 Rav4 that we owned for 11 years, bought used and never had any issues with except for the normal stuff like brakes, 2 struts...that still had the original ball joints and tierod ends on it when I sold it.
My rant is the fact North American (the big 3) car makes still haven't caught on that producing flashy junk full of neato gadgets we don't need isn't going to keep the lights on..
You would think after the US gov't bailed out 2 of them that they would have gone back to the drawing board.
Instead..they keep making vehicles that fall apart with in a year.
My Sierra isn't much better then the Compass.
I've always believed in buying "made in North America"..long before Toyota and the other foreign set up shop here..
But I'm tired of throwing good money after bad.