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Service bulletins for the 2016 GMC Sierra

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

2266 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Steering gear are shown. Show all

Bulletins, newest first
PI1002B2021-04-21. Service bulletin. STEERING:GEAR BOX (OTHER THAN RACK AND PINION). Grease or sealant visible on steering gear - should not be interpreted as leak. Some customers or technicians may comment on seeing grease or sealant on certain locations of the steering gear. The illustrations below include arrows showing the areas on the steering gear that the supplier intentionally applies sealing grease. Any of these locations have the potential of showing visible grease under normal operation.
PIT5501D2017-08-15. Service bulletin. STEERING; STEERING:GEAR BOX:SHAFT PITMAN. This Preliminary Information communication provides information to the technician on the steps to diagnosis and repair steering that feels loose or has excessive play. This concern could be caused by the Pitman Shaft Over-Center Preload Adjustment becoming misadjusted. Technician will need to replace the steering gear pitman arm shaft with an updated design.
PIT55012017-08-15. Service bulletin. STEERING; STEERING:GEAR BOX:SHAFT PITMAN. This Preliminary Information communication provides information to the technician on the steps to diagnosis and repair steering that feels loose or has excessive play. This concern could be cause by an incorrect Pitman Shaft Over-Center Preload Adjustment. Technician will perform a Steering Gear Pitman Shaft Over-Center Preload Adjustment procedure. Technician will remove the steering gear. The steering gear pitman shaft lash adjuster nut will need to be loosened. Turn the steering gear pitman shaft lash adjuster screw counterclockwise until fully extended. Turn the steering gear pitman shaft lash adjuster screw clockwise one full turn. Rotate the steering gear input shaft from stop to stop using a socket designed for the input shaft geometry, or crows foot with ratchet while counting the number of turns. Starting at either stop, turn the steering gear input shaft back half the total number of turns counted previously. This is the center position of the steering. Ensure the steering gear pitman shaft is centered. The flat on the steering gear input shaft should be facing upward and parallel with the steering gear side cover. Also the master spline on the steering gear pitman shaft is in line with the steering gear pitman shaft lash adjuster screw. Use a torque wrench on the steering gear input shaft to rotate the steering gear input shaft 300 degrees from each side of the center of the input shaft. The input shaft MUST rotate smoothly and must NOT stick or bind. Record the average turning torque from -300 to +300 degree sweep. The average "off center friction" torque must be 0.4 to 1.1 Nm (4 to 10 in lbs). If the torque is outside this range, replace the steering gear assembly. Tighten the steering gear pitman shaft lash adjuster nut to 75-85Nm (55-63 lb ft). Reprogram the Power Steering Control module with the latest calibrations in Tis2Web. Using the scan tool perform a Steering Angle Sensor Centering. Then use the scan tool to perform a Power Steering Pressure S

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.