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Service bulletin 18NA009

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 id10139248
Published by NHTSA2018-06-04
Manufacturer's number18NA009
Manufacturer's date2018-01-12
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM; STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

NHTSA's summary

This technical bulletin provides a procedure to replace the P/S hose, O2 sensor and engine harness if P/S fluid has been found leaking and the cause of the Mil on.

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

Engine, Exhaust and emissions, Steering, Exhaust manifold, pipes and muffler, Power steering

Vehicles listed
BUICK ENCLAVE2016, 2017
CHEVROLET TRAVERSE2016, 2017
GMC ACADIA2016, 2017

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

Other bulletins for the same vehicles and component
17-NA-2842021-04-14. Service bulletin. Reduced Steering Assist Message with DTC C0460 Sym 5A Condition Some customers may comment on a Reduced Steering Assist message on the DIC with no loss of steering assist. During diagnosis a technician may find DTC C0460 Sym 5A. Cause The condition is due to Steering Angle Sensor trim error. Note: The calibration allows for an error to set without actual loss of assist. Correction Reprogram the Power Steering Control Module.
PIE04132018-05-21. Service bulletin. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Malfunction Indicator Lamp Illuminated with DTC P0171 and/or P0174.
17-NA-1582018-05-21. Service bulletin. This informational bulletin explains to diagnose and repair the P0128 code before just replacing the power steering gear.
17NA2842018-04-23. Service bulletin. This technical bulletin provides a procedure to reprogram the power steering control module to correct a condition of Reduced Steering Assist Message with DTC C0460 Sym 5A due to a software abnormality.
PIC6073D2018-03-12. Service bulletin. This Preliminary Information communication provides information to the technician about the Media Oriented Systems Transport Bus Diagnostic Tool Kit (EL-51578) has been released to help diagnose any of the Media Oriented Systems Transport bus concerns. The kit contains header connectors that are installed to bypass Media Oriented Systems Transport bus modules. The bypass connector also contains a terminal for verifying Media Oriented Systems Transport control circuit voltages. Technician should review Media Oriented Systems Transport bus description and operation and Diagnostic Trouble Code U0028 diagnostic procedures.
PIP55452018-02-21. Service bulletin. This Preliminary information communicates a possible noise from the water pump causing a DTC and the diagnostics for the repair.
PIP5516A2018-02-21. Service bulletin. This Preliminary information communicates a possible power steering fluid leak above the engine harness to to the rear( Bank 1) heated Oxygen sensor and direction to replace all involved parts due to this contamination and leak.
13-02-32-001D2017-08-15. Service bulletin. This technical bulletin provides a procedure to flush and bleed the power steering system to correct a condition of power steering noise or fluid leak from power steering pump, gear or high pressure hose during extreme low temperature conditions.
PIC6048E2017-05-05. Service bulletin. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT SOME CUSTOMERS MAY COMMENT ON THE OPERATION OF THEIR HAPTIC SEAT DURING A LANE KEEP ASSIST EVENT. LANE KEEP ASSIST WORKS DIFFERENTLY THAN LANE DEPARTURE WARNING. THE LANE KEEP ASSIST ICON IS SOLID AMBER, FORWARD CAMERA MODULE IS ACTIVELY COMMANDING A TORQUE TO ELECTRONIC POWER STEERING. THIS MEANS THAT THE DRIVER SHOULD ALSO FEEL SOME FEEDBACK FROM THE STEERING WHEEL. NO CHIMES OR HAPTIC IN THE SEAT. LANE KEEP ASSIST ICON IS FLASHING AMBER; FORWARD CAMERA MODULE IS ACTIVELY COMMANDING TORQUE TO ELECTRONIC POWER STEERING. THIS WILL ALSO BE ACCOMPANIED WITH LANE DEPARTURE WARNING CHIMES AND HAPTIC IN THE SEAT FEEDBACK BASED ON THE SETTING CHOSEN IN THE VEHICLE SETTINGS. THIS WILL TAKE PLACE WHEN THE VEHICLE HAS CROSSED LANE MARKING BY (40 CM) OR (15.75 IN).
SB-16-NA-1092016-08-06. Service bulletin. "THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO INSPECT THE STEERING GEAR FOR A NORMAL CONDITION OF GREASE OR SEALANT ON EXTERIOR CASE OF GEAR DUE TO THE MANUFACTURING PROCESS."