I called for an update after dropping off the car at the dealer wednesday-
mylink updated

sharkfin antenna found to be warped and on order

noise could not be duplicated by technician
I told the service writer just rev it up in park to 2000 rpm and turn the AC on and you hear a turbine noise from the engine that goes away when the AC is turned off.
they did give me a newish Cruze for a loaner but the AC was overwhelmed yesterday with temps here in the 90s.
gonna drive my Ridgeline til I get my car back, supposed to be hot all weekend.