TSB: REVISION NOTICE July 2, 2018 Rev1: ? The Introduction, Production Change Information, and Repair Procedure sections have been updated. Any previous printed versions of this bulletin should be discarded. Some 2017 ? 2018 model year Tacoma vehicles with the BD20 differential (non-TRD) may exhibit a noise or vibration from the rear of the vehicle at low speeds or while braking. This condition may be caused by excessive clearance between the brake drum and axle drum flange. Follow the Repair Procedure in this bulletin to address this condition.
