WenmarOpen by Wenmar Pro

Service bulletin 16NA109

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 id10165079
Published by NHTSA2019-09-23
Manufacturer's number16NA109
Manufacturer's date2019-08-05
NHTSA componentSTEERING

NHTSA's summary

This technical 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.

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 CASCADA2016, 2017, 2018, 2019
BUICK ENCLAVE2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
BUICK ENCORE2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
BUICK ENVISION2016, 2017, 2018, 2019, 2020
BUICK LACROSSE2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
BUICK LUCERNE2009, 2010, 2011
BUICK LUCERNE2012
BUICK REGAL2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
BUICK VERANO2012, 2013, 2014, 2015, 2016, 2017
CADILLAC ATS2013, 2014, 2015, 2016, 2017, 2018, 2019
CADILLAC CT42020
CADILLAC CT52020
CADILLAC CT62016
CADILLAC CT62019, 2020
CADILLAC CT6 PLUG-IN HYBRID2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC CTS2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CADILLAC DTS2009, 2010, 2011
CADILLAC ELR2014, 2015, 2016, 2017
CADILLAC ESCALADE2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CADILLAC ESCALADE ESV2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE ESV2017, 2018, 2019, 2020
CADILLAC ESCALADE EXT2009, 2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC SRX2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
CADILLAC STS2009, 2010, 2011
CADILLAC XLR2009
CADILLAC XT42019, 2020
CADILLAC XT52017, 2018, 2019, 2020
CADILLAC XT62020
CADILLAC XTS2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET 35002016
CHEVROLET 35002018
CHEVROLET AVALANCHE2009, 2010, 2011, 2012, 2013
CHEVROLET AVEO2009, 2010, 2011
CHEVROLET BLAZER2019, 2020
CHEVROLET BOLT EV2017, 2018, 2019, 2020
CHEVROLET C SERIES2009
CHEVROLET CAMARO2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET CAPRICE2011 to 2017
CHEVROLET CAPTIVA2013 to 2015
CHEVROLET CAPTIVA SPORT2012
CHEVROLET CAVALIER
CHEVROLET CHEVEROLET SS2014 to 2017
CHEVROLET CITY EXPRESS2015, 2016
CHEVROLET COBALT2009, 2010
CHEVROLET COLORADO2009, 2010, 2011, 2012
CHEVROLET COLORADO2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET CORVETTE2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET CRUZE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET EQUINOX2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET EXPRESS2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET HHR2009, 2010, 2011
CHEVROLET IMPALA2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET LOW CAB FORWARD 45002017 to 2018
CHEVROLET LOW CAB FORWARD 55002018
CHEVROLET LOW CAB FORWARD 65002018 to 2019
CHEVROLET MALIBU2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET N3002018
CHEVROLET N300 MAX2017
CHEVROLET SILVERADO2017
CHEVROLET SILVERADO 15002009, 2010, 2011 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 15002014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 15002019, 2020 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002013 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002017 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002019, 2020 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 45002019, 2020 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 55002020 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SONIC2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET SPARK2013, 2014, 2015
CHEVROLET SPARK2018, 2019, 2020
CHEVROLET SPARK EV2014, 2015, 2016, 2017 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET T SERIES2009
CHEVROLET T SERIES2010
CHEVROLET TAHOE2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET TRAILBLAZER2009
CHEVROLET TRAVERSE2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET TRAX2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET UPLANDER2009
CHEVROLET VOLT2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET W-SERIES2009 to 2010
CHEVROLET duplicate SILVERADO 55002019
GMC ACADIA2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
GMC C SERIES2009
GMC CANYON2009, 2010, 2011, 2012
GMC CANYON2015, 2016, 2017, 2018, 2019, 2020
GMC ENVOY2009
GMC G VAN BUS2010
GMC SAVANA2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
GMC SIERRA2017
GMC SIERRA 15002014 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 15002019, 2020 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2009, 2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
GMC TOPKICK2009 to 2010
GMC W-SERIES2009 to 2010
GMC YUKON2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
GMC YUKON DENALI2009, 2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON DENALI XL2009, 2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL2009, 2010, 2011
GMC YUKON XL2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL2015, 2016, 2017, 2018, 2019, 2020
HUMMER H22009, 2010
HUMMER H32009, 2010
PONTIAC G32009, 2010
PONTIAC G52009, 2010
PONTIAC G62009, 2010
PONTIAC G82009, 2010
PONTIAC MONTANA2009
PONTIAC PURSUIT2009
PONTIAC SOLSTICE2009, 2010
PONTIAC TORRENT2009
PONTIAC VIBE2009, 2010
SAAB 9-32009
SAAB 9-52009, 2010
SAAB 9-7X2009
SATURN ASTRA2009
SATURN ASTRA2010
SATURN AURA2009, 2010
SATURN OUTLOOK2009, 2010
SATURN SKY2009, 2010
SATURN VUE2009, 2010

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

Recalls for the same vehicles and component
20251442025-03-20. Steering
25V1750002025-03-20. STEERING:ELECTRIC POWER ASSIST SYSTEM
20202912020-06-25. Steering
20190562019-02-08. Steering
19V0860002019-02-07. STEERING:ELECTRIC POWER ASSIST SYSTEM
20184822018-09-07. Steering
18V5860002018-09-07. STEERING:ELECTRIC POWER ASSIST SYSTEM
20184632018-08-30. Steering
20173252017-06-29. Steering
17V4140002017-06-29. STEERING:ELECTRIC POWER ASSIST SYSTEM

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
23-NA-2012025-10-21. Service bulletin. This service bulletin advises the technician of a possible loose ground that may be causing customer concerns of Loss of Steering Assist and/or Loss of Brake Assist and Malfunction Indicator Lamp (MIL) Illuminated.
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.
21-NA-1662025-06-06. Service bulletin. This informational bulletin provides information on the turn signal stalk not cancelling and/or mis cancelling.
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.
23-NA-0742025-05-02. Service bulletin. This service bulletin provides a procedure to add deadener to the batter tray bracket to correct customer concerns of a Service Engine Soon (SES), Reduced Power, Service Brake, Reduced Steering and/or Stabilitrak Message Illuminated on DIC, multiple DTCs.
23-NA-1852025-04-28. Service bulletin. This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, Engagement/Disengagement/Ratcheting Concerns.
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.