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Service bulletin 17-NA-066

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 id10239103
Published by NHTSA2023-07-13
Manufacturer's number17-NA-066
Manufacturer's date2023-06-29
NHTSA componentPOWER TRAIN

NHTSA's summary

This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test.

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

Transmission and driveline

Vehicles listed
BUICK CASCADA2016, 2017
BUICK CASCADA2019
BUICK ENCLAVE2010
BUICK ENCLAVE2013
BUICK ENCLAVE2016, 2017
BUICK ENCLAVE2021, 2022, 2023
BUICK ENCORE2013, 2014, 2015, 2016, 2017, 2018, 2019
BUICK ENCORE2021
BUICK ENCORE2023
BUICK ENCORE GX2020
BUICK ENCORE GX2023, 2024
BUICK ENVISION2017, 2018, 2019
BUICK ENVISION2022, 2023, 2024
BUICK ENVISTA2024
BUICK LACROSSE2011
BUICK LACROSSE2013, 2014, 2015
BUICK LACROSSE2017
BUICK LACROSSE2019
BUICK LACROSSE2020
BUICK LESABRE2013
BUICK LUCERNE2012
BUICK REGAL2011
BUICK REGAL2013, 2014, 2015
BUICK REGAL2017, 2018
BUICK REGAL2020
BUICK REGAL TOURX2018
BUICK REGAL TOURX2020
BUICK VERANO2012
BUICK VERANO2016, 2017
CADILLAC ATS2014
CADILLAC ATS2016
CADILLAC ATS2018, 2019
CADILLAC ATS-V2015, 2016, 2017 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC CT42020
CADILLAC CT42023, 2024
CADILLAC CT52020, 2021, 2022, 2023, 2024
CADILLAC CT62013
CADILLAC CT62017, 2018
CADILLAC CT62020
CADILLAC CTS2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CADILLAC CTS-V2010, 2011, 2012 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC CTS-V2014, 2015 (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 DTS2010
CADILLAC DTS2012
CADILLAC ESCALADE2010
CADILLAC ESCALADE2014, 2015
CADILLAC ESCALADE2017, 2018, 2019
CADILLAC ESCALADE2021, 2022
CADILLAC ESCALADE2024
CADILLAC ESCALADE ESV2011 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE ESV2014 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE ESV2016 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE ESV2017, 2018, 2019
CADILLAC ESCALADE ESV2021, 2022, 2023
CADILLAC ESCALADE EXT2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE EXT 15002010, 2011 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE HYBRID2010, 2011, 2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC SRX2011, 2012, 2013, 2014, 2015, 2016
CADILLAC SRX2017
CADILLAC SRX2019
CADILLAC STS2010, 2011
CADILLAC STS2012
CADILLAC XT42018
CADILLAC XT42019, 2020
CADILLAC XT42022, 2023, 2024
CADILLAC XT52014 to 2015
CADILLAC XT52017
CADILLAC XT52020, 2021, 2022
CADILLAC XT52024
CADILLAC XT62022, 2023, 2024
CADILLAC XTS2013, 2014
CADILLAC XTS2016, 2017, 2018
CADILLAC XTS2020
CHEVROLET 35002015
CHEVROLET 35002016
CHEVROLET 35002018 to 2019
CHEVROLET 35002020
CHEVROLET 3500HD2024
CHEVROLET 45002016
CHEVROLET 45002017
CHEVROLET 45002019
CHEVROLET 45002022
CHEVROLET 4500HD2018, 2019
CHEVROLET 4500HD2021, 2022, 2023
CHEVROLET 4500XD2018, 2019, 2020, 2021, 2022
CHEVROLET 5500HD2017
CHEVROLET 5500HD2020, 2021
CHEVROLET 5500HD2023
CHEVROLET 5500XD2018, 2019, 2020, 2021, 2022
CHEVROLET 65002019
CHEVROLET 6500HD2019
CHEVROLET 6500HD2021 to 2022
CHEVROLET AVALANCHE2010, 2011, 2012, 2013
CHEVROLET AVALANCHE2014
CHEVROLET AVALANCHE 15002010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET AVEO2010, 2011
CHEVROLET BLAZER2021
CHEVROLET C35002018
CHEVROLET C45002010
CHEVROLET CAMARO2011, 2012, 2013, 2014, 2015
CHEVROLET CAMARO2017, 2018, 2019
CHEVROLET CAMARO2021
CHEVROLET CAMARO2023
CHEVROLET CAPRICE2011 to 2013
CHEVROLET CAPRICE2015 to 2018
CHEVROLET CAPRICE POLICE PURSUIT2012 to 2015
CHEVROLET CAPRICE POLICE PURSUIT2017
CHEVROLET CAPTIVA2010
CHEVROLET CAPTIVA2012 to 2018
CHEVROLET CAPTIVA SPORT2010, 2011, 2012
CHEVROLET CHEVEROLET SS2014 to 2017
CHEVROLET CHEYENNE2017
CHEVROLET CITY EXPRESS2015
CHEVROLET CITY EXPRESS2018
CHEVROLET COBALT2010
CHEVROLET COLORADO2010, 2011
CHEVROLET COLORADO2013 to 2014
CHEVROLET COLORADO2016
CHEVROLET COLORADO2021, 2022, 2023, 2024
CHEVROLET CORVETTE2010
CHEVROLET CORVETTE2012, 2013, 2014, 2015
CHEVROLET CORVETTE2020, 2021, 2022, 2023
CHEVROLET CRUZE2011
CHEVROLET CRUZE2014, 2015
CHEVROLET CRUZE2018, 2019
CHEVROLET EQUINOX2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022
CHEVROLET EQUINOX2024
CHEVROLET EXPRESS2011
CHEVROLET EXPRESS2013
CHEVROLET EXPRESS2015, 2016, 2017, 2018
CHEVROLET EXPRESS2021
CHEVROLET EXPRESS 15002010, 2011, 2012 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS 25002010, 2011 (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 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 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 VAN2010, 2011, 2012, 2013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS CUTAWAY VAN2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EXPRESS CUTAWAY VAN2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET G VAN BUS2011
CHEVROLET G45002018
CHEVROLET HHR2011
CHEVROLET IMPALA2010, 2011, 2012, 2013
CHEVROLET IMPALA2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET LOW CAB FORWARD 35002017
CHEVROLET MALIBU2010
CHEVROLET MALIBU2012
CHEVROLET MALIBU2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET MALIBU2021, 2022, 2023, 2024
CHEVROLET MALIBU ECO2013 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET MALIBU HYBRID2010 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET MALIBU HYBRID2017 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET MALIBU HYBRID2019 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET MONTE CARLO2010
CHEVROLET N3002015 to 2016
CHEVROLET N3002018
CHEVROLET N300 MAX2017
CHEVROLET OPTRA2016
CHEVROLET S102016
CHEVROLET S102018
CHEVROLET SILVERADO 15002010, 2011 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 15002013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 15002017 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 15002019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002011, 2012, 2013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002024 (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 45002022, 2023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 55002019 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 55002021 (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 65002021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 65002023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SONIC2011
CHEVROLET SONIC2012, 2013, 2014, 2015, 2016, 2017, 2018
CHEVROLET SONIC2020
CHEVROLET SPARK2013, 2014, 2015
CHEVROLET SPARK2018, 2019, 2020
CHEVROLET SPARK2022
CHEVROLET SUBURBAN2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
CHEVROLET SUBURBAN2020
CHEVROLET SUBURBAN2022, 2023
CHEVROLET SUBURBAN 15002010, 2011 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN 15002022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET T SERIES2010
CHEVROLET TAHOE2010, 2011
CHEVROLET TAHOE2013, 2014, 2015, 2016
CHEVROLET TAHOE2018, 2019, 2020, 2021, 2022
CHEVROLET TAHOE2024
CHEVROLET TAHOE HYBRID2010, 2011, 2012 (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 TRAILBLAZER2018 to 2020

And 84 more lines, in the JSON.

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

Recalls for the same vehicles and component
26V2890002026-05-07. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)
26V0850002026-02-13. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
20260612026-02-12. Powertrain
20251182025-03-06. Powertrain
25V1480002025-03-06. POWER TRAIN:AUTOMATIC TRANSMISSION
20246372024-10-24. Powertrain
24V7970002024-10-24. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
22V0910002022-02-17. POWER TRAIN:DRIVELINE:DRIVESHAFT
20220272022-01-27. Powertrain
22V0360002022-01-27. POWER TRAIN:DRIVELINE:DRIVESHAFT

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
25-NA-0802025-12-03. Service bulletin. This service bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customers concern of No Reverse, No Shift Past Third Gear - DTC P2732 Set.
25-NA-0802025-10-16. Service bulletin. This service bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customers concern of No Reverse, No Shift Past Third Gear - DTC P2732 Set.
23-NA-1192025-10-16. Service bulletin. This service bulletin provides service procedure information to correct a customer concern of Shift to Park Displayed on DIC When Vehicle is in- Park, No Start - DTC B000A Set.
N242454441 -032025-10-09. Service campaign. Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. Dealers are to install a new control valve body. The repairs will be made at no charge to the customer.
22-NA-1822025-09-27. Service bulletin. This service bulletin advises the technician to check if the transmission cooler lines are twisted to correct customer concerns of Harsh Shift, Shudder, Surge, Stall, Transmission Overheating and/or High Transmission Fluid Temperature.
N252494003-012025-06-26. Service campaign. Certain vehicles listed above, may have a condition where the connecting rod and/or crankshaft engine components in these vehicles may have manufacturing defects that can lead to engine damage and engine failure. This special coverage covers if an engine failure occurs in the vehicle as a result of the condition described above for a period of 10 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 23, 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 May 23, 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 engine. The repairs will be made at no charge to the customer.
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.
N242480631-022025-05-27. Service campaign. Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. This special coverage covers vehicles that return after TCM Update Product Safety N242480630 and have P0747 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 March 6, 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 March 6, 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 install a new control valve body. The repairs will be made at no charge to the customer.
N242480631-012025-05-22. Service campaign. Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. This special coverage covers vehicles that return after TCM Update Product Safety N242480630 and have P0747 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 March 6, 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 March 6, 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 install a new control valve body. The repairs will be made at no charge to the customer.
25-NA-0802025-04-29. Service bulletin. This service bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customers concern of No Reverse, No Shift Past Third Gear - DTC P2732 Set.