Some 2009-2012 F-150 Vehicles equipped with a 2-piece driveshaft only and built on or before 7/30/2012 may exhibit a rear driveshaft slip/bump concern on light to moderate acceleration from a stop or when coming to a stop with light braking.
ISSUE Some 2009-2012 F-150 Vehicles equipped with a 2-piece driveshaft only and built on or before 7/30/2012 may exhibit a rear driveshaft slip/bump concern on light to moderate acceleration from a stop or when coming to a stop with light braking. Service Bulletin # 12-7-13 Date: 120731 Drivetrain - Rear Driveshaft Slip/Bump On Acceleration TSB 12-7-13 07/31/12 REAR DRIVESHAFT SLIP/BUMP - BUILT ON OR BEFORE 7/30/2012 FORD: 2009-2012 F-150 This article supersedes TSB(s) 10-22-06 to update the Part List and Service Procedure. ACTION Follow the Service Procedure steps to correct the condition. SERVICE PROCEDURE It is not necessary to remove the entire driveshaft from the vehicle for this repair. 1. With the vehicle in neutral, position it on a hoist. Refer to Workshop Manual (WSM), Section 100-02. 2. Index-mark the driveshaft flange and pinion flange to maintain alignment during installation. 3. Mark a straight line down the slip yoke and driveshaft in line with front slip yoke boot c...