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Service bulletin 21-NA-043

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 id10234144
Published by NHTSA2023-04-13
Manufacturer's number21-NA-043
Manufacturer's date2023-03-20
NHTSA componentELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; WHEELS; ENGINE AND ENGINE COOLING

NHTSA's summary

This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.

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

Electrical system, Engine, Fuel system, Wheels

Vehicles listed
BUICK CASCADA2016, 2017, 2018, 2019
BUICK ENCLAVE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
BUICK ENCORE2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022
BUICK ENCORE2023
BUICK ENCORE GX2020, 2021, 2022, 2023
BUICK ENVISION2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
BUICK LACROSSE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
BUICK LACROSSE2020
BUICK LESABRE2013
BUICK LUCERNE2011
BUICK LUCERNE2012
BUICK REGAL2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
BUICK REGAL TOURX2018
BUICK REGAL TOURX2020
BUICK VERANO2012, 2013, 2014, 2015, 2016, 2017
CADILLAC ATS2013, 2014, 2015, 2016, 2017, 2018, 2019
CADILLAC ATS-V2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC CT42020, 2021, 2022, 2023
CADILLAC CT52020, 2021, 2022, 2023
CADILLAC CT62013 to 2015
CADILLAC CT62016, 2017, 2018, 2019, 2020
CADILLAC CT62021
CADILLAC CTS2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CADILLAC CTS-V2011, 2012 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC CTS-V2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC CTS-V2018 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC DTS2011
CADILLAC DTS2012
CADILLAC ELR2014, 2015, 2016, 2017
CADILLAC ESCALADE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
CADILLAC ESCALADE ESV2011, 2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE ESV2017, 2018, 2019, 2020, 2021, 2022, 2023
CADILLAC ESCALADE EXT2011, 2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE EXT 15002011 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE HYBRID2011, 2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE NA2021 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC LYRIQ2023
CADILLAC SRX2011, 2012, 2013, 2014, 2015, 2016
CADILLAC SRX2017 to 2019
CADILLAC STS2011
CADILLAC STS2012
CADILLAC XT42018
CADILLAC XT42019, 2020, 2021, 2022, 2023
CADILLAC XT52013 to 2016
CADILLAC XT52017, 2018, 2019, 2020, 2021, 2022, 2023
CADILLAC XT62020, 2021, 2022, 2023
CADILLAC XTS2013, 2014, 2015, 2016, 2017, 2018, 2019
CADILLAC XTS2020
CHEVROLET 35002014 to 2015
CHEVROLET 35002016
CHEVROLET 35002017 to 2019
CHEVROLET 35002020
CHEVROLET 35002021
CHEVROLET 35002022
CHEVROLET 45002016
CHEVROLET 45002017 to 2019
CHEVROLET 45002020
CHEVROLET 45002022
CHEVROLET 4500HD2017, 2018, 2019, 2020, 2021, 2022
CHEVROLET 4500XD2017, 2018, 2019, 2020, 2021, 2022
CHEVROLET 5500HD2017, 2018, 2019, 2020, 2021, 2022
CHEVROLET 5500XD2018, 2019, 2020, 2021, 2022
CHEVROLET 65002019
CHEVROLET 6500HD2022
CHEVROLET AVALANCHE2011, 2012, 2013
CHEVROLET AVALANCHE2014
CHEVROLET AVALANCHE 15002011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET AVALANCHE 25002013 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET AVEO2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
CHEVROLET BLAZER2019, 2020, 2021, 2022, 2023, 2024
CHEVROLET BOLT EUV2022, 2023
CHEVROLET BOLT EV2017, 2018, 2019, 2020, 2021, 2022, 2023
CHEVROLET C35002018
CHEVROLET CAMARO2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
CHEVROLET CAPRICE2011 to 2018
CHEVROLET CAPRICE POLICE PURSUIT2012 to 2017
CHEVROLET CAPTIVA2011 to 2018
CHEVROLET CAPTIVA SPORT2011, 2012
CHEVROLET CHEVEROLET SS2014 to 2017
CHEVROLET CHEYENNE2017
CHEVROLET CITY EXPRESS2015, 2016
CHEVROLET CITY EXPRESS2018
CHEVROLET COBALT2011 to 2017
CHEVROLET COLORADO2011, 2012
CHEVROLET COLORADO2013 to 2014
CHEVROLET COLORADO2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
CHEVROLET CORVETTE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
CHEVROLET CRUZE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET EQUINOX2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
CHEVROLET EXPRESS2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET EXPRESS 15002011, 2012 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 15002014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 25002011 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 25002014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 25002023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 35002012 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 35002014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 35002023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 45002012 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 45002014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 45002016 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS CUTAWAY2013 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS CUTAWAY VAN2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET G VAN BUS2011
CHEVROLET G45002018
CHEVROLET HHR2011
CHEVROLET IMPALA2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET LOW CAB FORWARD 35002016 to 2019
CHEVROLET LOW CAB FORWARD 45002016 to 2017
CHEVROLET LOW CAB FORWARD 55002016 to 2017
CHEVROLET LOW CAB FORWARD 65002018
CHEVROLET LUMINA2014
CHEVROLET MALIBU2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
CHEVROLET MALIBU ECO2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET MALIBU HYBRID2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET N3002014 to 2016
CHEVROLET N3002018
CHEVROLET N300 MAX2017
CHEVROLET ONIX2021
CHEVROLET OPTRA2016
CHEVROLET ORLANDO2017
CHEVROLET S102016 to 2018
CHEVROLET SILVERADO 15002011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 45002019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 55002019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 55002023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 65002019 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 65002021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SONIC2011
CHEVROLET SONIC2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET SPARK2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022
CHEVROLET SPARK EV2014, 2015, 2016, 2017 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SS2018
CHEVROLET SUBURBAN2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
CHEVROLET SUBURBAN 15002011 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN 15002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN 25002011 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
CHEVROLET TAHOE HYBRID2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE POLICE PURSUIT2011, 2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TRAILBLAZER2013 to 2014
CHEVROLET TRAILBLAZER2017 to 2020
CHEVROLET TRAILBLAZER2021, 2022, 2023
CHEVROLET TRAVERSE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
CHEVROLET TRAX2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
CHEVROLET VOLT2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET W-SERIES2011
CHEVROLET duplicate SILVERADO 55002019
GMC ACADIA2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
GMC CANYON2011, 2012, 2013
GMC CANYON2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
GMC DENALI2011 to 2015
GMC ENVOY2011 to 2013
GMC G VAN BUS2011
GMC G35002017 to 2018
GMC HUMMER EV PICKUP2022, 2023
GMC SAVANA2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
GMC SAVANA 15002011, 2012, 2013, 2014, 2015, 2016, 2017 (the catalog's model; the bulletin names a series or trim of it)
GMC SAVANA 25002011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC SAVANA 35002011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 15002011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
GMC TERRAIN NA2022 (the catalog's model; the bulletin names a series or trim of it)
GMC TOPKICK2011 to 2013
GMC W-SERIES2011
GMC YUKON2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
GMC YUKON DENALI2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON DENALI2015, 2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON DENALI XL2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON HYBRID2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL2011
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, 2021, 2022, 2023
GMC YUKON XL 15002011 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL 15002012 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL 25002011 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL 25002012, 2013 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
25V6190002025-09-18. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
20254292025-08-21. Fuel System
25V5360002025-08-21. FUEL SYSTEM, GASOLINE
20252252025-04-24. Engine
25V2740002025-04-24. ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
20242942024-05-24. Electrical
24V3200002024-05-09. ELECTRICAL SYSTEM:PROPULSION SYSTEM; ELECTRICAL SYSTEM:WIRING
20232102023-04-06. Electrical
23V2470002023-04-06. ELECTRICAL SYSTEM:WIRING
20230402023-02-02. Fuel 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
N262570770-032026-10-16. Service campaign. 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.
N2625762602026-10-15. Service campaign. 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.
N262570770-022026-09-25. Service campaign. 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.
N262558690-022026-09-23. Service campaign. 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.
N262570770-012026-09-18. Service campaign. 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.
N2625586902026-09-16. Service campaign. 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.
N2625707702026-09-15. Service campaign. 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.
N242452131-022026-09-15. Emissions. 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.
N262558690-012026-09-02. Emissions. 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.
N242484750-022026-09-01. Warranty extension. 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.