Power Sliding Door

Where do I begin, my 2002 Silhouette has had a warranty claim at every regular service. Every couple of weeks the power door stops mid way during closing, GM engineers can't even figure this one out. Would love to hear from anyone who has had this problem and possible solution? We have also replaced heated seat element 2x on driver side in one year, high pitched vibration noise in front windshield, weather stripping around door replaced, problem with power steering, dragging of power windows, blower wheel and motor replaced in heating/cooling system. All of this under 60,000KMS - A little more than I bargained for, for $40K

what's going on with the power steering?

i have a 2001 Olds Silhouette. i've been getting sort of a grinding
noise when turning to the right...it's sporadic and all GM mechanics
can't figure it out.