# 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. - Type: Service bulletin - NHTSA id: 10165079 - Published by NHTSA: 2019\-09\-23 - Manufacturer's number: 16NA109 - Manufacturer's date: 2019\-08\-05 - NHTSA component: STEERING ## 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 - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10165079-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10165079-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Steering ## Vehicles listed - 2016 to 2019 BUICK CASCADA - 2009 to 2020 BUICK ENCLAVE - 2013 to 2020 BUICK ENCORE - 2016 to 2020 BUICK ENVISION - 2009 to 2019 BUICK LACROSSE - 2009 to 2011 BUICK LUCERNE - 2012 BUICK LUCERNE - 2011 to 2020 BUICK REGAL - 2012 to 2017 BUICK VERANO - 2013 to 2019 CADILLAC ATS - 2020 CADILLAC CT4 - 2020 CADILLAC CT5 - 2016 CADILLAC CT6 - 2019 to 2020 CADILLAC CT6 - 2017 to 2018 CADILLAC CT6 PLUG\-IN HYBRID - 2009 to 2019 CADILLAC CTS - 2009 to 2011 CADILLAC DTS - 2014 to 2017 CADILLAC ELR - 2009 to 2020 CADILLAC ESCALADE - 2009 to 2016 CADILLAC ESCALADE ESV - 2017 to 2020 CADILLAC ESCALADE ESV - 2009 to 2013 CADILLAC ESCALADE EXT - 2009 to 2016 CADILLAC SRX - 2009 to 2011 CADILLAC STS - 2009 CADILLAC XLR - 2019 to 2020 CADILLAC XT4 - 2017 to 2020 CADILLAC XT5 - 2020 CADILLAC XT6 - 2013 to 2019 CADILLAC XTS - 2016 CHEVROLET 3500 - 2018 CHEVROLET 3500 - 2009 to 2013 CHEVROLET AVALANCHE - 2009 to 2011 CHEVROLET AVEO - 2019 to 2020 CHEVROLET BLAZER - 2017 to 2020 CHEVROLET BOLT EV - 2009 CHEVROLET C SERIES - 2010 to 2020 CHEVROLET CAMARO - 2011 to 2017 CHEVROLET CAPRICE - 2013 to 2015 CHEVROLET CAPTIVA - 2012 CHEVROLET CAPTIVA SPORT - CHEVROLET CAVALIER - 2014 to 2017 CHEVROLET CHEVEROLET SS - 2015 to 2016 CHEVROLET CITY EXPRESS - 2009 to 2010 CHEVROLET COBALT - 2009 to 2012 CHEVROLET COLORADO - 2015 to 2020 CHEVROLET COLORADO - 2009 to 2020 CHEVROLET CORVETTE - 2011 to 2019 CHEVROLET CRUZE - 2009 to 2020 CHEVROLET EQUINOX - 2009 to 2020 CHEVROLET EXPRESS - 2009 to 2011 CHEVROLET HHR - 2009 to 2020 CHEVROLET IMPALA - 2017 to 2018 CHEVROLET LOW CAB FORWARD 4500 - 2018 CHEVROLET LOW CAB FORWARD 5500 - 2018 to 2019 CHEVROLET LOW CAB FORWARD 6500 - 2009 to 2020 CHEVROLET MALIBU - 2018 CHEVROLET N300 - 2017 CHEVROLET N300 MAX - 2017 CHEVROLET SILVERADO - 2009 to 2011 CHEVROLET SILVERADO 1500 - 2014 CHEVROLET SILVERADO 1500 - 2019 to 2020 CHEVROLET SILVERADO 1500 - 2009 to 2016 CHEVROLET SILVERADO 2500 - 2018 to 2020 CHEVROLET SILVERADO 2500 - 2013 CHEVROLET SILVERADO 3500 - 2017 CHEVROLET SILVERADO 3500 - 2019 to 2020 CHEVROLET SILVERADO 3500 - 2019 to 2020 CHEVROLET SILVERADO 4500 - 2020 CHEVROLET SILVERADO 5500 - 2012 to 2020 CHEVROLET SONIC - 2013 to 2015 CHEVROLET SPARK - 2018 to 2020 CHEVROLET SPARK - 2014 to 2017 CHEVROLET SPARK EV - 2009 to 2020 CHEVROLET SUBURBAN - 2009 CHEVROLET T SERIES - 2010 CHEVROLET T SERIES - 2009 to 2020 CHEVROLET TAHOE - 2009 CHEVROLET TRAILBLAZER - 2009 to 2020 CHEVROLET TRAVERSE - 2013 to 2020 CHEVROLET TRAX - 2009 CHEVROLET UPLANDER - 2011 to 2019 CHEVROLET VOLT - 2009 to 2010 CHEVROLET W\-SERIES - 2019 CHEVROLET duplicate SILVERADO 5500 - 2009 to 2020 GMC ACADIA - 2009 GMC C SERIES - 2009 to 2012 GMC CANYON - 2015 to 2020 GMC CANYON - 2009 GMC ENVOY - 2010 GMC G VAN BUS - 2009 to 2020 GMC SAVANA - 2017 GMC SIERRA - 2014 GMC SIERRA 1500 - 2019 to 2020 GMC SIERRA 1500 - 2009 to 2016 GMC SIERRA 2500 - 2018 to 2020 GMC SIERRA 2500 - 2009 to 2013 GMC SIERRA DENALI - 2015 to 2016 GMC SIERRA DENALI - 2018 to 2019 GMC SIERRA DENALI - 2010 to 2020 GMC TERRAIN - 2009 to 2010 GMC TOPKICK - 2009 to 2010 GMC W\-SERIES - 2009 to 2020 GMC YUKON - 2009 to 2013 GMC YUKON DENALI - 2009 to 2013 GMC YUKON DENALI XL - 2009 to 2011 GMC YUKON XL - 2012 to 2014 GMC YUKON XL - 2015 to 2020 GMC YUKON XL - 2009 to 2010 HUMMER H2 - 2009 to 2010 HUMMER H3 - 2009 to 2010 PONTIAC G3 - 2009 to 2010 PONTIAC G5 - 2009 to 2010 PONTIAC G6 - 2009 to 2010 PONTIAC G8 - 2009 PONTIAC MONTANA - 2009 PONTIAC PURSUIT - 2009 to 2010 PONTIAC SOLSTICE - 2009 PONTIAC TORRENT - 2009 to 2010 PONTIAC VIBE - 2009 SAAB 9\-3 - 2009 to 2010 SAAB 9\-5 - 2009 SAAB 9\-7X - 2009 SATURN ASTRA - 2010 SATURN ASTRA - 2009 to 2010 SATURN AURA - 2009 to 2010 SATURN OUTLOOK - 2009 to 2010 SATURN SKY - 2009 to 2010 SATURN VUE ## Recalls for the same vehicles and component - [2025144](/recalls/tc/2025144.md), 2025-03-20: Steering - [25V175000](/recalls/nhtsa/25V175000.md), 2025-03-20: STEERING:ELECTRIC POWER ASSIST SYSTEM - [2020291](/recalls/tc/2020291.md), 2020-06-25: Steering - [2019056](/recalls/tc/2019056.md), 2019-02-08: Steering - [19V086000](/recalls/nhtsa/19V086000.md), 2019-02-07: STEERING:ELECTRIC POWER ASSIST SYSTEM - [2018482](/recalls/tc/2018482.md), 2018-09-07: Steering - [18V586000](/recalls/nhtsa/18V586000.md), 2018-09-07: STEERING:ELECTRIC POWER ASSIST SYSTEM - [2018463](/recalls/tc/2018463.md), 2018-08-30: Steering - [2017325](/recalls/tc/2017325.md), 2017-06-29: Steering - [17V414000](/recalls/nhtsa/17V414000.md), 2017-06-29: STEERING:ELECTRIC POWER ASSIST SYSTEM ## Other bulletins for the same vehicles and component - [23\-NA\-201](/bulletins/11024378.md), 2025-10-21, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM; STEERING. 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. - [PI0281L](/bulletins/11019516.md), 2025-06-12, Service bulletin: STEERING; POWER TRAIN; SUSPENSION. This preliminary informational \(PI\) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers. - [21\-NA\-166](/bulletins/11019325.md), 2025-06-06, Service bulletin: EXTERIOR LIGHTING; STEERING. This informational bulletin provides information on the turn signal stalk not cancelling and/or mis cancelling. - [13\-02\-32\-001H](/bulletins/11017868.md), 2025-05-06, Service bulletin: STEERING. 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\-074](/bulletins/11017508.md), 2025-05-02, Service bulletin: ELECTRICAL SYSTEM; SERVICE BRAKES; ENGINE; STEERING. 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\-185](/bulletins/11017255.md), 2025-04-28, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; STEERING. 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\-065](/bulletins/11017173.md), 2025-04-24, Service bulletin: STEERING; SERVICE BRAKES; FUEL/PROPULSION SYSTEM. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis. - [16\-NA\-109](/bulletins/11014577.md), 2025-02-28, Service bulletin: STEERING. 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\-239](/bulletins/11013269.md), 2025-01-30, Service bulletin: ELECTRICAL SYSTEM; SEATS; STRUCTURE:BODY; STEERING; ENGINE. This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope. - [04\-06\-01\-029K](/bulletins/11011205.md), 2024-12-04, Service bulletin: POWER TRAIN; STEERING; ENGINE. This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules. JSON: [/v1/bulletins/10165079](/v1/bulletins/10165079) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2016NA109&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10165079&vehicle=Service%20bulletin%2016NA109)