# Service bulletin 19\-NA\-044 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: 10250505 - Published by NHTSA: 2024\-02\-21 - Manufacturer's number: 19\-NA\-044 - Manufacturer's date: 2024\-02\-07 - NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; FUEL SYSTEM, GASOLINE ## NHTSA's summary This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10250505-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10250505-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Engine, Exhaust and emissions, Fuel system ## Vehicles listed - 2008 to 2009 BUICK ALLURE - 2016 to 2019 BUICK CASCADA - 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 - 2008 to 2019 BUICK LACROSSE - 2020 BUICK LACROSSE - 2013 BUICK LESABRE - 2008 to 2011 BUICK LUCERNE - 2012 BUICK LUCERNE - 2008 to 2010 BUICK REGAL - 2011 to 2020 BUICK REGAL - 2018 BUICK REGAL TOURX - 2020 BUICK REGAL TOURX - 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 - 2008 to 2019 CADILLAC CTS - 2010 to 2012 CADILLAC CTS\-V - 2014 to 2016 CADILLAC CTS\-V - 2018 CADILLAC CTS\-V - 2008 to 2011 CADILLAC DTS - 2012 CADILLAC DTS - 2008 to 2024 CADILLAC ESCALADE - 2008 to 2016 CADILLAC ESCALADE ESV - 2017 to 2023 CADILLAC ESCALADE ESV - 2008 to 2014 CADILLAC ESCALADE EXT - 2008 to 2011 CADILLAC ESCALADE EXT 1500 - 2008 to 2014 CADILLAC ESCALADE HYBRID - 2021 CADILLAC ESCALADE NA - 2008 to 2016 CADILLAC SRX - 2008 to 2011 CADILLAC STS - 2012 CADILLAC STS - 2008 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 - 2019 CHEVROLET 6500 - 2008 to 2013 CHEVROLET AVALANCHE - 2014 CHEVROLET AVALANCHE - 2008 to 2013 CHEVROLET AVALANCHE 1500 - 2013 CHEVROLET AVALANCHE 2500 - 2008 to 2011 CHEVROLET AVEO - 2008 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 - 2014 to 2017 CHEVROLET CHEVEROLET SS - 2015 to 2016 CHEVROLET CITY EXPRESS - 2018 CHEVROLET CITY EXPRESS - 2008 to 2010 CHEVROLET COBALT - 2008 to 2010 CHEVROLET COBALT SS - 2008 to 2012 CHEVROLET COLORADO - 2013 to 2014 CHEVROLET COLORADO - 2015 to 2024 CHEVROLET COLORADO - 2008 to 2024 CHEVROLET CORVETTE - 2008 CHEVROLET CORVETTE Z06 - 2009 to 2011 CHEVROLET CORVETTE ZR1 - 2010 to 2019 CHEVROLET CRUZE - 2008 to 2024 CHEVROLET EQUINOX - 2008 to 2021 CHEVROLET EXPRESS - 2008 to 2012 CHEVROLET EXPRESS 1500 - 2014 CHEVROLET EXPRESS 1500 - 2008 to 2011 CHEVROLET EXPRESS 2500 - 2014 CHEVROLET EXPRESS 2500 - 2023 to 2024 CHEVROLET EXPRESS 2500 - 2008 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 - 2008 to 2023 CHEVROLET EXPRESS CUTAWAY VAN - 2008 to 2011 CHEVROLET G VAN BUS - 2008 CHEVROLET G1500 - 2008 CHEVROLET G3500 - 2018 CHEVROLET G4500 - 2008 to 2011 CHEVROLET HHR - 2008 to 2020 CHEVROLET IMPALA - 2008 CHEVROLET LUMINA - 2014 CHEVROLET LUMINA - 2008 to 2024 CHEVROLET MALIBU - 2013 to 2014 CHEVROLET MALIBU ECO - 2008 to 2010 CHEVROLET MALIBU HYBRID - 2016 to 2019 CHEVROLET MALIBU HYBRID - 2008 CHEVROLET MONTE CARLO - 2010 CHEVROLET MONTE CARLO - 2014 to 2016 CHEVROLET N300 - 2018 CHEVROLET N300 - 2017 CHEVROLET N300 MAX - 2016 to 2018 CHEVROLET S10 - 2008 to 2024 CHEVROLET SILVERADO 1500 - 2008 to 2024 CHEVROLET SILVERADO 2500 - 2008 to 2024 CHEVROLET SILVERADO 3500 - 2019 to 2023 CHEVROLET SILVERADO 4500 - 2019 to 2021 CHEVROLET SILVERADO 5500 - 2023 CHEVROLET SILVERADO 5500 - 2019 CHEVROLET SILVERADO 6500 - 2021 to 2023 CHEVROLET SILVERADO 6500 - 2018 CHEVROLET SILVERADO LT - 2011 CHEVROLET SONIC - 2012 to 2020 CHEVROLET SONIC - 2013 to 2022 CHEVROLET SPARK - 2018 CHEVROLET SS - 2008 to 2024 CHEVROLET SUBURBAN - 2008 to 2011 CHEVROLET SUBURBAN 1500 - 2021 to 2024 CHEVROLET SUBURBAN 1500 - 2008 to 2011 CHEVROLET SUBURBAN 2500 - 2008 to 2024 CHEVROLET TAHOE - 2008 to 2013 CHEVROLET TAHOE HYBRID - 2010 to 2016 CHEVROLET TAHOE POLICE PURSUIT - 2008 to 2009 CHEVROLET TRAILBLAZER - 2013 to 2014 CHEVROLET TRAILBLAZER - 2017 to 2020 CHEVROLET TRAILBLAZER - 2021 to 2024 CHEVROLET TRAILBLAZER - 2008 to 2009 CHEVROLET TRAILBLAZER 360 - 2008 CHEVROLET TRAVERSE - 2009 to 2024 CHEVROLET TRAVERSE - 2013 to 2024 CHEVROLET TRAX - 2008 to 2009 CHEVROLET UPLANDER - 2011 to 2019 CHEVROLET VOLT - 2019 CHEVROLET duplicate SILVERADO 5500 - 2024 GMC 3500HD - 2008 to 2024 GMC ACADIA - 2008 to 2013 GMC CANYON - 2015 to 2024 GMC CANYON - 2008 to 2009 GMC ENVOY - 2010 to 2013 GMC ENVOY - 2008 to 2009 GMC ENVOY 360 - 2009 GMC EXPRESS - 2008 to 2011 GMC G VAN BUS - 2008 GMC G1500 - 2017 to 2018 GMC G3500 - 2008 to 2024 GMC SAVANA - 2008 to 2017 GMC SAVANA 1500 - 2008 to 2018 GMC SAVANA 2500 - 2023 GMC SAVANA 2500 - 2008 to 2018 GMC SAVANA 3500 - 2023 GMC SAVANA 3500 - 2008 to 2024 GMC SIERRA 1500 - 2008 to 2024 GMC SIERRA 2500 - 2008 to 2024 GMC SIERRA 3500 - 2008 to 2020 GMC SIERRA DENALI - 2009 to 2024 GMC TERRAIN - 2022 GMC TERRAIN NA - 2008 to 2024 GMC YUKON - 2008 to 2013 GMC YUKON DENALI - 2015 to 2019 GMC YUKON DENALI - 2008 to 2018 GMC YUKON DENALI XL - 2008 to 2013 GMC YUKON HYBRID - 2008 to 2011 GMC YUKON XL - 2012 to 2014 GMC YUKON XL - 2015 to 2024 GMC YUKON XL - 2008 to 2011 GMC YUKON XL 1500 - 2012 GMC YUKON XL 1500 - 2023 GMC YUKON XL 1500 - 2008 to 2011 GMC YUKON XL 2500 - 2012 to 2013 GMC YUKON XL 2500 ## Recalls for the same vehicles and component - [25V619000](/recalls/nhtsa/25V619000.md), 2025-09-18: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY - [2025429](/recalls/tc/2025429.md), 2025-08-21: Fuel System - [25V536000](/recalls/nhtsa/25V536000.md), 2025-08-21: FUEL SYSTEM, GASOLINE - [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 - [2023040](/recalls/tc/2023040.md), 2023-02-02: Fuel System - [23V047000](/recalls/nhtsa/23V047000.md), 2023-02-02: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY - [2021583](/recalls/tc/2021583.md), 2021-09-23: Fuel System - [21V739000](/recalls/nhtsa/21V739000.md), 2021-09-23: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP:CONTROL/DRIVE MODULE - [21V346000](/recalls/nhtsa/21V346000.md), 2021-05-13: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE ## 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. - [N262558690\-02](/bulletins/11037460.md), 2026-09-23, Service campaign: FUEL/PROPULSION SYSTEM. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module. - [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. - [N262558690](/bulletins/11037321.md), 2026-09-16, Service campaign: FUEL/PROPULSION SYSTEM. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module. - [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. - [N242452131\-02](/bulletins/11037312.md), 2026-09-15, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain 2023\-2024 model year Chevrolet Colorado / Silverado 1500 and GMC Canyon / Sierra 1500 vehicles equipped with a 2.7L engine \(RPO L3B\). The Engine Control Module \(ECM\) may not sufficiently control fuel injector flow rate under certain driving conditions. Dealers are to reprogram the ECM. - [N262558690\-01](/bulletins/11036648.md), 2026-09-02, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module. - [N242484750\-02](/bulletins/11036594.md), 2026-09-01, Warranty extension: ENGINE. Special Coverage. Certain 2022 model year Buick Encore GX and Chevrolet Trailblazer vehicles, equipped with a 1.2L engine, may have a condition that could cause the turbocharger to fail. If this condition occurs, the Malfunction Indicator Lamp \(Check Engine Light\) will illuminate, and a diagnostic trouble code will set. Additionally, a message may be displayed indicating the vehicle’s available engine power is reduced. 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 January 14, 2025, 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 January 14, 2025, 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 turbocharger as necessary. The repairs will be made at no charge to the customer. JSON: [/v1/bulletins/10250505](/v1/bulletins/10250505) [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%2019-NA-044&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10250505&vehicle=Service%20bulletin%2019-NA-044)