The vehicle has a shoulder belt height adjuster for the driver and right front passenger seating positions.
Adjust the height so the shoulder portion of the belt is on the shoulder and not falling off of it. The belt should be close to, but not contacting, the neck. Improper shoulder belt height adjustment could reduce the effectiveness of the safety belt in a crash. See How to Wear Safety Belts Properly.

To move it down, press the release button and move the height adjuster to the desired position.
After the adjuster is set to the desired position, try to move it down without pressing the release button to make sure it has locked into position.
Lap-Shoulder Belt
Safety Belt PretensionersOnStar Overview
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect
to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic
Services.
The OnStar system status light is next to the OnStar buttons. If the status light
is:
Solid Green: System is read ...
Cooling Fan Description and Operation (LUV)
The engine cooling fan system is composed of one cooling fan, a series of 5 relays,
the engine control module (ECM), and the associated wiring. The cooling fan assembly
includes two resistors. This combination of components enables the ECM to operate
the cooling fan at 3 speeds usi ...
Uniform tire quality grading
DOT (Department Of Transportation) tire quality grading standards apply to all
passenger vehicle tires, including those used on the Nissan Armada.
These grades indicate tire performance characteristics and can typically be found
on the tire sidewall between the tread shoulder and the maximum se ...