One problem related to differential unit has been reported for the 2000 Nissan Frontier. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Nissan Frontier based on all problems reported for the 2000 Frontier.
On chrismas day, my father and I were driving my Nissan pu on route 29 in virginia at about 55 mph. A sudden and severe jerk was felt twice and we pulled off and checked the truck for dammage. No obvious external damage was noted at that time but there was a grinding noise noted when truck was put in 4 wheel drive low. Normal function noted in 4 high and 3 high. On 1/2/2001 at dealership . . . The left front 4x4 hub cover was noted to be missing and the hub had spiral cracks all around it. The dealership refused to confirm this as a torque fracture and refused to entertain any thought that the truck they had sold had malfunctioned. Not only was this incident scary but I am just thankful that my father and I were not in a high speed accident due to this failure.