Section 05-02G: Axle, Integral Carrier, 8.8-Inch Ring Gear | 1996 F-150 and Bronco Workshop Manual |
A gear-driven unit (especially on a drive axle) will produce a certain amount of noise. Some noise is acceptable and may be audible at certain speeds or under various driving conditions, as on a newly paved blacktop road. The slight noise is in no way detrimental to operation of the rear axle and must be considered normal.
Vehicles equipped with a limited slip (Traction-Lok®) differential may exhibit a slight stick-slip noise (chatter) on tight turns after extended highway driving. This is considered acceptable and has no detrimental effect.