See also:

Additional information contained on the tire sidewall for “LT” type tires
“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: ...

Fuses
If electrical components in the vehicle are not working, a fuse may have blown. Blown fuses are identified by a broken wire within the fuse. Check the appropriate fuses before replacing any ...

Compass calibration adjustment
Perform compass calibration in an open area free from steel structures and high voltage lines. For optimum calibration, turn off all electrical accessories (heater/air conditioning, wipers, etc.) ...