I believe the reason that the Passenger door had the outside key lock and not he drivers door was , at that time it was customary that the driver would slide across the seat and exit the car from the passenger side so no one got out of the car on the drivers side. This was a safety factor to keep people from exiting the car into the on coming traffic.If you'll remember GM was possibly still thinking of a way to limit the number of people exiting the vehicle on the driver side when they offered the first 4-door suburbans( actually 3 doors) to the public. grin


BAN LOW PERFORMANCE DRIVERS...
NOT HIGH PERFORMANCE CARS !!