Single shoe? That sounds BS.
Aren't all sorentos equipped with disks and pads in all four wheels? My EX is.
My parking brake works just fine in up and downhill situations. I use it mainly to prevent the gear knob from getting stuck when the car isn't levelled.
Yes, my 2017 Sorento has 4 wheel disc brakes.
But no, the Parking Brake does not use those Pads & Rotors.
The Rear Rotors are shaped like a "hat", the front rotors are not.
Inside that "hat" is an old-style Parking Drum and a single Drum Shoe - per the technician.
Do you have a
2017 Sorento?
The dealer pulled out another 2017 Sorento from their stock
and it too rolled forward down the hill with the Parking Brake ON.
So, their explanation is ... "See, they all do that".
With the Parking Brake SET, a slight press of the accelerator and my car will roll forward - YIKES!
But in reverse and with high RPM's, my vehicle will not roll backwards, not even 1".
The Dealer & Kia Corporate both say, "Yes, this is normal operation. Therefore, your CASE # is closed. Goodbye ...".
Supposedly, the Parking Shoe clearance is as tight as the Dealer can make it, without excessive wear on drum.