See also:

Additional information contained on the tire sidewall for “LT” typetires
“LT” type tires have some additional information beyond those of “P” type tires; these differences are described below. Note: Tire Quality Grades do not apply to this type of tire. 1. LT ...

Reverse sensing system
The reverse sensing system (RSS) sounds a tone to warn the driver of obstacles near the rear bumper when the R (Reverse) is selected and the vehicle is moving at speeds less than 3 mph (5 km/h). T ...

Determining if the system is operational
The supplemental restraint system uses a warning indicator light in the instrument cluster or a backup tone to indicate the condition of the system. Refer to the Warning lights and chimes section ...