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Service bulletin 16NA318

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10174259
Published by NHTSA2020-04-27
Manufacturer's number16NA318
Manufacturer's date2020-03-27
NHTSA componentSTEERING

NHTSA's summary

This Technical bulletin provides information on replacing both inner and outer intermediate steering shaft boots and steering gear due to water intrusion in the steering gear input shaft freezing and/or corrosion causing a hard to steer in colder temperatures and/or knocking/clicking noise.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Steering

Vehicles listed
BUICK ENCORE2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET TRAX2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20194582019-09-12. Steering
20191942019-04-18. Steering
15V1460002015-03-13. STEERING:ELECTRIC POWER ASSIST SYSTEM
20151072015-03-12. Steering
13V1050002013-03-28. STEERING: STEERING WHEEL/HANDLE BAR

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
PI0281L2025-06-12. Service bulletin. This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
13-02-32-001H2025-05-06. Service bulletin. This service bulletin provides a procedure to flush and bleed power steering system to correct a power steering noise or fluid leak concern that is caused during extremely low temperatures.
25-NA-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
16-NA-1092025-02-28. Service bulletin. This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.
24-NA-2392025-01-30. Service bulletin. This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope.
04-06-01-029K2024-12-04. Service bulletin. This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
PIC5753B2023-12-11. Service bulletin. Information On Steering Column Lock And Ignition Switch Hard To Rotate From The Lock Position.
PIC5753A2023-12-11. Service bulletin. Information On Steering Column Lock And Ignition Switch Hard To Rotate From The Lock Position.
13098B2023-12-11. Service bulletin. PSR-Steering Wheel Fastener Inspection
130232001D2023-12-11. Service bulletin. Power Steering Noise or Fluid Leak from Power Steering Pump, Gear or High Pressure Hose During Extreme Low Temperature Conditions