Some 2015-2021 Transit vehicles may experience difficulty opening and/or closing the manual sliding door that will require sliding door adjustment. When performing the sliding door adjustment procedure in Workshop Manual (WSM), Section 501-03, use the following updated torque specs. Step 12 = 70 Nm (52 ft-lb). Step 27 = 40 Nm (30 ft-lb). In step 18, apply Motorcraft Threadlock 262 (TA-26) to the nut before torqueing. The WSM is in the process of being updated to include these revisions.