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Service bulletin 18NA246

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 id10161941
Published by NHTSA2019-07-01
Manufacturer's number18NA246
Manufacturer's date2019-05-29
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)

NHTSA's summary

This technical bulletin provides a procedure to change the oil if excessive fuel has been found in the oil and the cause of the DTC set. Also replacing the PCV valve in camshaft cover and updating the ECM with latest software.

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, Engine, Exhaust and emissions, Crankcase ventilation (PCV), Software

Vehicles listed
BUICK ENVISION2016, 2017, 2018, 2019
BUICK REGAL2014, 2015, 2016, 2017, 2018, 2019
CADILLAC ATS2013, 2014, 2015, 2016, 2017, 2018, 2019
CADILLAC CT62016
CADILLAC CT6 PLUG-IN HYBRID2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC CTS2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET CAMARO2016, 2017, 2018, 2019
CHEVROLET EQUINOX2018, 2019
CHEVROLET MALIBU2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET TRAVERSE2018, 2019
GMC TERRAIN2017, 2018, 2019

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

Recalls for the same vehicles and component
19V6420002019-09-06. ENGINE; ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS
16V0840002016-02-11. ELECTRICAL SYSTEM:SOFTWARE
12V2240002012-05-18. ELECTRICAL SYSTEM:SOFTWARE

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
20-NA-1322024-04-05. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
141042023-12-18. Service bulletin. Oxygen Sensor Fracture
PIC5741B2023-12-11. Service bulletin. Multiple DTCs Set When Using Scan Tool Device.
PIC5741A2023-12-11. Service bulletin. Multiple DTCs Set When Using Scan Tool Device.
PIC57412023-12-11. Service bulletin. Multiple DTCs Set When Using Scan Tool Device.
PIC5656A2023-12-11. Service bulletin. Outside Ambient Temperature Display Missing.
130089004H2023-12-11. Service bulletin. Car and Truck Fix it Right the First Time Issues
1300890032023-12-11. Service bulletin. Vehicle Software Enhancements
PIP5632G2023-01-30. Service bulletin. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
PIP4902Q2023-01-30. Service bulletin. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.