See also:

Door Latches
Check for positive closing, latching, and locking. ...

Automatic Door Locks — If Equipped
The auto door lock feature default condition is disabled. When enabled, the door locks will lock automatically when the vehicle’s speed exceeds 15 mph (24 km/h). The auto door lock feature can ...

Gross Axle Weight Rating (GAWR)
The GAWR is the maximum capacity of the front and rear axles. Distribute the load over the front and rear axles evenly. Make sure that you do not exceed either front or rear GAWR. Refer to “Vehi ...