# Service bulletin 16\-NA\-338 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: 10250347 - Published by NHTSA: 2024\-02\-17 - Manufacturer's number: 16\-NA\-338 - Manufacturer's date: 2024\-02\-02 - NHTSA component: POWER TRAIN; ENGINE AND ENGINE COOLING ## NHTSA's summary This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10250347-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10250347-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Engine, Transmission and driveline ## Vehicles listed - 2006 to 2009 BUICK ALLURE - 2016 to 2019 BUICK CASCADA - 2005 BUICK CENTURY - 2008 to 2024 BUICK ENCLAVE - 2013 to 2022 BUICK ENCORE - 2023 to 2024 BUICK ENCORE - 2020 to 2024 BUICK ENCORE GX - 2016 to 2024 BUICK ENVISION - 2024 BUICK ENVISTA - 2005 to 2019 BUICK LACROSSE - 2020 BUICK LACROSSE - 2005 BUICK LESABRE - 2006 BUICK LESABRE - 2013 BUICK LESABRE - 2006 to 2011 BUICK LUCERNE - 2012 BUICK LUCERNE - 2005 BUICK PARK AVENUE - 2005 to 2007 BUICK RAINIER - 2005 BUICK REGAL - 2008 to 2010 BUICK REGAL - 2011 to 2020 BUICK REGAL - 2018 BUICK REGAL TOURX - 2020 BUICK REGAL TOURX - 2005 to 2007 BUICK RENDEZVOUS - 2005 to 2007 BUICK TERRAZA - 2008 BUICK TERRAZA - 2012 to 2017 BUICK VERANO - 2013 to 2019 CADILLAC ATS - 2015 to 2018 CADILLAC ATS\-V - 2020 to 2024 CADILLAC CT4 - 2020 to 2024 CADILLAC CT5 - 2013 to 2015 CADILLAC CT6 - 2016 to 2020 CADILLAC CT6 - 2021 CADILLAC CT6 - 2005 to 2019 CADILLAC CTS - 2005 to 2007 CADILLAC CTS\-V - 2010 to 2012 CADILLAC CTS\-V - 2014 to 2016 CADILLAC CTS\-V - 2018 CADILLAC CTS\-V - 2005 CADILLAC DEVILLE - 2005 CADILLAC DTS - 2006 to 2011 CADILLAC DTS - 2012 CADILLAC DTS - 2005 to 2024 CADILLAC ESCALADE - 2005 to 2016 CADILLAC ESCALADE ESV - 2017 to 2023 CADILLAC ESCALADE ESV - 2007 to 2014 CADILLAC ESCALADE EXT - 2005 to 2011 CADILLAC ESCALADE EXT 1500 - 2008 to 2014 CADILLAC ESCALADE HYBRID - 2021 CADILLAC ESCALADE NA - 2005 to 2016 CADILLAC SRX - 2005 to 2011 CADILLAC STS - 2012 CADILLAC STS - 2005 to 2009 CADILLAC XLR - 2018 CADILLAC XT4 - 2019 to 2024 CADILLAC XT4 - 2013 to 2016 CADILLAC XT5 - 2017 to 2024 CADILLAC XT5 - 2020 to 2024 CADILLAC XT6 - 2013 to 2019 CADILLAC XTS - 2020 CADILLAC XTS - 2005 CHEVROLET ASTRO - 2007 to 2013 CHEVROLET AVALANCHE - 2014 CHEVROLET AVALANCHE - 2005 to 2013 CHEVROLET AVALANCHE 1500 - 2005 to 2007 CHEVROLET AVALANCHE 2500 - 2013 CHEVROLET AVALANCHE 2500 - 2005 to 2011 CHEVROLET AVEO - 2005 CHEVROLET BLAZER - 2006 to 2009 CHEVROLET BLAZER - 2019 to 2024 CHEVROLET BLAZER - 2010 to 2024 CHEVROLET CAMARO - 2011 to 2018 CHEVROLET CAPRICE - 2012 to 2017 CHEVROLET CAPRICE POLICE PURSUIT - 2008 to 2018 CHEVROLET CAPTIVA - 2009 CHEVROLET CAPTIVA SPORT - 2010 to 2014 CHEVROLET CAPTIVA SPORT - 2005 CHEVROLET CAVALIER - 2014 to 2017 CHEVROLET CHEVEROLET SS - 2015 to 2016 CHEVROLET CITY EXPRESS - 2018 CHEVROLET CITY EXPRESS - 2005 to 2006 CHEVROLET CLASSIC - 2005 to 2010 CHEVROLET COBALT - 2008 to 2010 CHEVROLET COBALT SS - 2005 to 2012 CHEVROLET COLORADO - 2013 to 2014 CHEVROLET COLORADO - 2015 to 2024 CHEVROLET COLORADO - 2005 to 2024 CHEVROLET CORVETTE - 2005 to 2008 CHEVROLET CORVETTE Z06 - 2009 to 2011 CHEVROLET CORVETTE ZR1 - 2010 to 2019 CHEVROLET CRUZE - 2005 to 2006 CHEVROLET DENALI - 2005 CHEVROLET EPICA - 2005 to 2024 CHEVROLET EQUINOX - 2005 to 2021 CHEVROLET EXPRESS - 2005 to 2012 CHEVROLET EXPRESS 1500 - 2014 CHEVROLET EXPRESS 1500 - 2005 to 2011 CHEVROLET EXPRESS 2500 - 2014 CHEVROLET EXPRESS 2500 - 2023 to 2024 CHEVROLET EXPRESS 2500 - 2005 to 2010 CHEVROLET EXPRESS 3500 - 2012 CHEVROLET EXPRESS 3500 - 2014 CHEVROLET EXPRESS 3500 - 2023 to 2024 CHEVROLET EXPRESS 3500 - 2009 CHEVROLET EXPRESS 4500 - 2012 CHEVROLET EXPRESS 4500 - 2014 CHEVROLET EXPRESS 4500 - 2016 CHEVROLET EXPRESS 4500 - 2013 CHEVROLET EXPRESS CUTAWAY - 2005 to 2023 CHEVROLET EXPRESS CUTAWAY VAN - 2005 to 2011 CHEVROLET G VAN BUS - 2005 to 2008 CHEVROLET G1500 - 2005 CHEVROLET G2500 - 2005 CHEVROLET G3500 - 2008 CHEVROLET G3500 - 2018 CHEVROLET G4500 - 2006 to 2011 CHEVROLET HHR - 2005 to 2020 CHEVROLET IMPALA - 2006 CHEVROLET IMPALA \(GMX 211\) - 2005 CHEVROLET INCOMPLETE/CUTAWAY C3 - 2008 CHEVROLET LUMINA - 2014 CHEVROLET LUMINA - 2005 to 2024 CHEVROLET MALIBU - 2005 CHEVROLET MALIBU CLASSIC - 2007 CHEVROLET MALIBU CLASSIC - 2013 to 2014 CHEVROLET MALIBU ECO - 2008 to 2010 CHEVROLET MALIBU HYBRID - 2016 to 2019 CHEVROLET MALIBU HYBRID - 2005 to 2007 CHEVROLET MALIBU MAXX - 2005 to 2007 CHEVROLET MONTE CARLO - 2008 CHEVROLET MONTE CARLO - 2010 CHEVROLET MONTE CARLO - 2014 to 2016 CHEVROLET N300 - 2018 CHEVROLET N300 - 2017 CHEVROLET N300 MAX - 2005 to 2007 CHEVROLET OPTRA - 2005 CHEVROLET S/T BLAZER - 2005 to 2007 CHEVROLET S10 - 2016 to 2018 CHEVROLET S10 - 2005 to 2024 CHEVROLET SILVERADO 1500 - 2005 CHEVROLET SILVERADO 1500 HD - 2005 to 2024 CHEVROLET SILVERADO 2500 - 2005 to 2024 CHEVROLET SILVERADO 3500 - 2018 CHEVROLET SILVERADO LT - 2011 CHEVROLET SONIC - 2012 to 2020 CHEVROLET SONIC - 2013 to 2022 CHEVROLET SPARK - 2018 CHEVROLET SS - 2005 to 2006 CHEVROLET SSR - 2007 CHEVROLET SSR - 2005 to 2024 CHEVROLET SUBURBAN - 2005 to 2011 CHEVROLET SUBURBAN 1500 - 2021 to 2024 CHEVROLET SUBURBAN 1500 - 2005 to 2006 CHEVROLET SUBURBAN 2500 - 2008 to 2011 CHEVROLET SUBURBAN 2500 - 2005 to 2024 CHEVROLET TAHOE - 2008 to 2013 CHEVROLET TAHOE HYBRID - 2010 to 2016 CHEVROLET TAHOE POLICE PURSUIT - 2005 to 2009 CHEVROLET TRAILBLAZER - 2013 to 2014 CHEVROLET TRAILBLAZER - 2017 to 2020 CHEVROLET TRAILBLAZER - 2021 to 2024 CHEVROLET TRAILBLAZER - 2005 to 2009 CHEVROLET TRAILBLAZER 360 - 2006 CHEVROLET TRAILBLAZER EXT - 2005 to 2006 CHEVROLET TRAILBLAZER EXT 370 - 2005 CHEVROLET TRANS SPORT - 2008 CHEVROLET TRAVERSE - 2009 to 2024 CHEVROLET TRAVERSE - 2013 to 2024 CHEVROLET TRAX - 2005 to 2009 CHEVROLET UPLANDER - 2005 CHEVROLET VENTURE - 2024 GMC 3500HD - 2007 to 2024 GMC ACADIA - 2005 to 2013 GMC CANYON - 2015 to 2024 GMC CANYON - 2005 to 2009 GMC ENVOY - 2010 to 2013 GMC ENVOY - 2005 to 2009 GMC ENVOY 360 - 2006 to 2007 GMC ENVOY DENALI - 2006 GMC ENVOY DENALI XL - 2006 GMC ENVOY XL - 2005 to 2006 GMC ENVOY XL 370 - 2005 GMC ENVOY XUV - 2009 GMC EXPRESS - 2005 to 2011 GMC G VAN BUS - 2005 to 2008 GMC G1500 - 2005 GMC G2500 - 2005 GMC G3500 - 2017 to 2018 GMC G3500 - 2005 GMC JIMMY CLASSIC - 2005 GMC SAFARI - 2005 GMC SAFARI \(GMC\) - 2005 to 2024 GMC SAVANA - 2005 to 2017 GMC SAVANA 1500 - 2005 to 2018 GMC SAVANA 2500 - 2023 GMC SAVANA 2500 - 2005 to 2018 GMC SAVANA 3500 - 2023 GMC SAVANA 3500 - 2005 to 2024 GMC SIERRA 1500 - 2005 GMC SIERRA 1500 HD ## Recalls for the same vehicles and component - [26V289000](/recalls/nhtsa/26V289000.md), 2026-05-07: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\) - [26V085000](/recalls/nhtsa/26V085000.md), 2026-02-13: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE - [2026061](/recalls/tc/2026061.md), 2026-02-12: Powertrain - [2026060](/recalls/tc/2026060.md), 2026-02-12: Powertrain - [26V083000](/recalls/nhtsa/26V083000.md), 2026-02-12: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY - [2025225](/recalls/tc/2025225.md), 2025-04-24: Engine - [25V274000](/recalls/nhtsa/25V274000.md), 2025-04-24: ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL - [2025118](/recalls/tc/2025118.md), 2025-03-06: Powertrain - [25V148000](/recalls/nhtsa/25V148000.md), 2025-03-06: POWER TRAIN:AUTOMATIC TRANSMISSION - [2024679](/recalls/tc/2024679.md), 2024-11-07: Powertrain ## Other bulletins for the same vehicles and component - [N262570770\-03](/bulletins/11038560.md), 2026-10-16, Service campaign: ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator. - [N262576260](/bulletins/11038468.md), 2026-10-15, Service campaign: ENGINE. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition that could cause a small exhaust leak at the catalytic converter inlet. Dealers are to replace the catalytic converter inlet clamp and to inspect the catalytic converter – replacing it if damage is observed. The repairs will be made at no charge to the customer. - [N262570770\-02](/bulletins/11037486.md), 2026-09-25, Service campaign: ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator. - [N262570770\-01](/bulletins/11037367.md), 2026-09-18, Service campaign: ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator. - [N262570770](/bulletins/11037318.md), 2026-09-15, Service campaign: ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator. - [N252502891\-01](/bulletins/11036308.md), 2026-08-20, Service campaign: POWER TRAIN. Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the rear electric drive transmission module. - [N252502890\-01](/bulletins/11036307.md), 2026-08-20, Service campaign: POWER TRAIN. Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the front electric drive transmission module. - [N242471460\-01](/bulletins/11036306.md), 2026-08-20, Service campaign: POWER TRAIN. Certain vehicles may have been built with an Electric Drive Unit mounting bolt that is too long, causing damage to the Drive Unit case. Dealers will inspect and replace the Electrical Drive Unit if necessary. - [N262552620](/bulletins/11032588.md), 2026-05-11, Service campaign: ENGINE. Certain vehicles may have a condition that could cause the cylinder 2 glow plug to fail. If this failure occurs, the Malfunction Indicator Light \(Check Engine Light\) will illuminate and a diagnostic trouble code will set. This special coverage covers the condition described above for a period of 15 years or 150,000 miles \(240,000 km\), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after May 11, 2026, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to May 11, 2026, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage \(“Customers”\) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to replace the cylinder 2 glow plug as necessary. The repairs will be made at no charge to the customer. - [N262548050](/bulletins/11031551.md), 2026-04-24, Service bulletin: ENGINE. This message is to inform dealers that Special Coverage N262548050 is being temporarily suspended for the models above. Involved vehicles will be temporarily removed from IVH. Dealers will be notified when repairs can be resumed. We apologize for any inconvenience this situation may cause. JSON: [/v1/bulletins/10250347](/v1/bulletins/10250347) [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%2016-NA-338&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10250347&vehicle=Service%20bulletin%2016-NA-338)