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Service bulletin 18NA033

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 id10212551
Published by NHTSA2022-05-31
Manufacturer's number18NA033
Manufacturer's date2021-12-02
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION

NHTSA's summary

This bulletin provides information for the low oil pressure light on at idle, which may be caused by oil pressure being bled off due to debris in the oil drain check valve and/or a smashed oil filter.

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, Equipment and accessories, Engine oil and lubrication

Vehicles listed
BUICK ENCORE2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET AVEO2009, 2010, 2011, 2012
CHEVROLET CRUZE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
CHEVROLET SONIC2012, 2013, 2014
CHEVROLET SONIC2017, 2018, 2019, 2020
CHEVROLET TRAX2013, 2014
CHEVROLET TRAX2017, 2018, 2019, 2020, 2021
PONTIAC G32009, 2010
SATURN ASTRA2008, 2009

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
PIP51322024-04-22. Service bulletin. Diesel Oxidation Converter Particulate Filter Part Restriction.
22NA0092022-05-31. Service bulletin. This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
16NA2222022-05-31. Service bulletin. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
PIP5540G2021-04-19. Service bulletin. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
010601011L2021-03-01. Service bulletin. This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
20NA0472020-08-31. Service bulletin. This technical bulletin provides a service procedure to correct conditions of Front or Rear Crankshaft Oil Leak, MIL Illuminated with DTC P1101 Set.
PIP57342020-08-10. Service bulletin. This Preliminary information communicates to the dealer a testing procedure to isolate a potential Engine Oil Pump Switching issue.
PI0604C2018-06-04. Service bulletin. This preliminary informational bulletin provides a revision to update the model information and information under Oil Pump Assembly.