Dear drkhan3,
Last year I went to Khunjrab Pass from Lahore on Honda City 2014 and GLI 2012. Both went well. There was even landslide last year in Babusar area which my both cars crossed without issues (without passengers). As many people have suggested, make sure your tyres and breaks are in excellent condition. These are the only two things which will keep you safe while coming down from Babusar and Khunjrab Pass. Make sure you have an extra tyre in good condition. Many time tyre get burst by small stones in between Babusar and Chillas area.
Make sure you don't start to watch the mesmerize scenery while driving - one of the primary reason of accidents. And please please don't go fast, be very very attentive while driving specifically on Babusar and Khunjrab pass height and slops.
Happy Journey