WenmarOpen by Wenmar Pro

Service bulletin 20NA113

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 id10176642
Published by NHTSA2020-06-22
Manufacturer's number20NA113
Manufacturer's date2020-05-28
NHTSA componentSTEERING; ELECTRICAL SYSTEM

NHTSA's summary

This technical bulletin provides repair information to correct a customer concern of Action Required Steering Assist is Reduced Drive with Care Or Service Power Steering Message And Or Current Power Steering Control Module DTCs.

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

Electrical system, Steering

Vehicles listed
CHEVROLET SILVERADO 15002017, 2018 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002017, 2018 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2017, 2018
CHEVROLET TAHOE2017, 2018
GMC SIERRA 25002017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2017, 2018
GMC YUKON XL2018

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

Recalls for the same vehicles and component
20242942024-05-24. Electrical
20214072021-07-01. Electrical
20193252019-06-28. Electrical
20192042019-04-26. Electrical

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
18-NA-1802025-10-16. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
18-NA-1802025-09-26. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
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-0872025-05-02. Service bulletin. This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
13-08-116-001K2025-04-25. Service bulletin. The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
24-NA-0982025-04-24. Service bulletin. This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
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.
15-06-03-001F2025-04-15. Service bulletin. This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
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.