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Service bulletin 21-NA-135

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 id10230612
Published by NHTSA2023-01-25
Manufacturer's number21-NA-135
Manufacturer's date2023-01-13
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.

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

Vehicles listed
BUICK CASCADA2019
BUICK ENCLAVE2019, 2020, 2021, 2022, 2023
BUICK ENCORE2019, 2020, 2021, 2022
BUICK ENCORE2023
BUICK ENCORE GX2020, 2021, 2022, 2023
BUICK ENVISION2019, 2020, 2021, 2022, 2023
BUICK LACROSSE2019
BUICK LACROSSE2020
BUICK REGAL2019, 2020
CADILLAC ATS2019
CADILLAC CT42020, 2021, 2022, 2023
CADILLAC CT52020, 2021, 2022, 2023
CADILLAC CT62019, 2020
CADILLAC CT62021
CADILLAC CTS2019
CADILLAC ESCALADE2019, 2020, 2021, 2022, 2023
CADILLAC ESCALADE ESV2019, 2020, 2021, 2022, 2023
CADILLAC ESCALADE NA2021 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC LYRIQ2023
CADILLAC SRX2019
CADILLAC XT42019, 2020, 2021, 2022, 2023
CADILLAC XT52019, 2020, 2021, 2022, 2023
CADILLAC XT62020, 2021, 2022, 2023
CADILLAC XTS2019
CADILLAC XTS2020
CADILLAC redundant LYRIQ2023
CHEVROLET 65002019
CHEVROLET BLAZER2019, 2020, 2021, 2022, 2023
CHEVROLET BOLT EUV2022, 2023
CHEVROLET BOLT EV2019, 2020, 2021, 2022, 2023
CHEVROLET CAMARO2019, 2020, 2021, 2022, 2023
CHEVROLET COLORADO2019, 2020, 2021, 2022, 2023
CHEVROLET CORVETTE2019, 2020, 2021, 2022, 2023
CHEVROLET CRUZE2019
CHEVROLET EQUINOX2019, 2020, 2021, 2022, 2023
CHEVROLET EXPRESS2019, 2020, 2021
CHEVROLET EXPRESS 25002023 (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 IMPALA2019, 2020
CHEVROLET MALIBU2019, 2020, 2021, 2022, 2023
CHEVROLET MALIBU HYBRID2019 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET ONIX2021
CHEVROLET SILVERADO 15002019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002019, 2020, 2021, 2022, 2023 (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 SONIC2019, 2020
CHEVROLET SPARK2019, 2020, 2021, 2022
CHEVROLET SUBURBAN2019, 2020, 2021, 2022, 2023
CHEVROLET SUBURBAN 15002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2019, 2020, 2021, 2022, 2023
CHEVROLET TRAILBLAZER2019 to 2020
CHEVROLET TRAILBLAZER2021, 2022, 2023
CHEVROLET TRAVERSE2019, 2020, 2021, 2022, 2023
CHEVROLET TRAX2019, 2020, 2021, 2022
CHEVROLET VOLT2019
CHEVROLET duplicate SILVERADO 55002019
GMC ACADIA2019, 2020, 2021, 2022, 2023
GMC CANYON2019, 2020, 2021, 2022, 2023
GMC HUMMER EV PICKUP2022, 2023
GMC SAVANA2019, 2020, 2021, 2022, 2023
GMC SIERRA 15002019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2019, 2020, 2021, 2022, 2023
GMC TERRAIN NA2022 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2019, 2020, 2021, 2022, 2023
GMC YUKON DENALI2019 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL2019, 2020, 2021, 2022, 2023

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

Recalls for the same vehicles and component
24V1330002024-02-22. ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
20232102023-04-06. Electrical
23V2470002023-04-06. ELECTRICAL SYSTEM:WIRING
21V4210002021-06-10. AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT; ELECTRICAL SYSTEM:SOFTWARE
20211662021-03-18. Electrical
21V1890002021-03-18. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
20V7900002020-12-17. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
20V4890002020-08-18. ELECTRICAL SYSTEM:SOFTWARE; STRUCTURE:BODY:TRUNK LID
20V4610002020-08-06. ELECTRICAL SYSTEM:SOFTWARE; LATCHES/LOCKS/LINKAGES:TRUNK LID:LOCK
20196312019-12-12. Electrical

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
N2525155902026-01-27. Service campaign. Certain vehicles listed above, may have a condition in which the body-to-chassis ground strap may be corroded. Dealers will replace the ground strap.
22-NA-0072025-11-15. Service bulletin. This service bulletin provides procedures to correct customer concerns of Poor Engine Performance in Extremely Cold Weather Conditions, Charge Air Cooler (CAC) Icing - Malfunction Indicator Lamp (MIL) Illuminated with DTCs P0299, P0234, P0236, P2227, P00C7 Set.
24-NA-2352025-10-27. Service bulletin. This technical bulletin provides a procedure to correct the condition of Steering Column Rattle and Turn Signal Over Cancels.
24-NA-1702025-10-27. Service bulletin. This service bulletin provides repair information to correct a customer concern of Check Engine Lamp Illuminated with HVAC Related DTC.
23-NA-1702025-10-25. Service bulletin. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
23-NA-2012025-10-21. Service bulletin. 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.
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.
18-NA-1802025-10-16. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
22-NA-1612025-09-27. Service bulletin. This informational bulletin provides information for dealers/technicians on power folding mirrors do not fold at the same speed.
18-NA-1802025-09-26. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.