transfer case issue

Transfer case difficult to shift or will not shift into desired range. Transfer case shift linkage binding= Repair or replace linkage as necessary. Insufficient or incorrect lubricant= Drain and refill transfer case with the correct type and quantity of lubricant. Internal transfer case components binding, worn, or damaged= Repair or replace components as necessary. Transfer case noisy in all drive modes. Insufficient or incorrect lubricant. = Drain and refill transfer case with the correct type and quantity of lubricant . Lubricant leaking from transfer case seals or vent.= Transfer case overfilled = Drain lubricant to the correct level. Transfer case vent closed or restricted = Clean or replace vent as necessary. Transfer case seals damaged or installed incorrectly = Replace suspect seal. Transfer case will not shift through 4X4 part time range (light remains on) Incomplete shift due to drivetrain torque load = Momentarily release the accelerator pedal to complete the shift. Incorrect tire pressure = Correct tire pressure as necessary. Excessive Tire wear = Correct tire condition as necessary. Excessive vehicle loading. = Correct as necessary.