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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11014222 |
| Published by NHTSA | 2025-02-12 |
| Manufacturer's number | 21-NA-135 |
| Manufacturer's date | 2025-01-28 |
| NHTSA component | UNKNOWN OR OTHER; ELECTRICAL 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
| BRIGHTDROP 600 ELCV | 2024 |
|---|---|
| BRIGHTDROP ZEVO 600 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| BUICK CASCADA | 2019 |
| BUICK ENCLAVE | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| BUICK ENCORE | 2019, 2020, 2021, 2022 |
| BUICK ENCORE | 2023 to 2025 |
| BUICK ENCORE GX | 2020, 2021, 2022, 2023, 2024, 2025 |
| BUICK ENVISION | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| BUICK ENVISTA | 2024, 2025 |
| BUICK LACROSSE | 2019 |
| BUICK LACROSSE | 2020 |
| BUICK REGAL | 2019, 2020 |
| BUICK REGAL TOURX | 2020 |
| CADILLAC ATS | 2019 |
| CADILLAC ATS-V | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CADILLAC CT4 | 2020, 2021, 2022, 2023, 2024, 2025 |
| CADILLAC CT5 | 2020, 2021, 2022, 2023, 2024, 2025 |
| CADILLAC CT6 | 2019, 2020 |
| CADILLAC CT6 | 2021 |
| CADILLAC CTS | 2019 |
| CADILLAC ESCALADE | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CADILLAC ESCALADE ESV | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CADILLAC ESCALADE IQ | 2025 |
| CADILLAC LYRIQ | 2023, 2024, 2025 |
| CADILLAC OPTIQ | 2025 |
| CADILLAC XT4 | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CADILLAC XT5 | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CADILLAC XT6 | 2020, 2021, 2022, 2023, 2024, 2025 |
| CADILLAC XTS | 2019 |
| CADILLAC XTS | 2020 |
| CHEVROLET 6500 | 2019 |
| CHEVROLET BLAZER | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET BLAZER EV | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET BOLT EUV | 2022, 2023 |
| CHEVROLET BOLT EV | 2019, 2020, 2021, 2022, 2023 |
| CHEVROLET BOLT EV | 2024 |
| CHEVROLET CAMARO | 2019, 2020, 2021, 2022, 2023, 2024 |
| CHEVROLET COLORADO | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET CORVETTE | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET CORVETTE E-RAY | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET CRUZE | 2019 |
| CHEVROLET EQUINOX | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET EQUINOX EV | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS | 2019, 2020, 2021 |
| CHEVROLET EXPRESS | 2023 |
| CHEVROLET EXPRESS 2500 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS 2500 | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS 3500 | 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS CUTAWAY VAN | 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET IMPALA | 2019, 2020 |
| CHEVROLET MALIBU | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET MALIBU HYBRID | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2019, 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 3500 | 2019, 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 4500 | 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 5500 | 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 5500 | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 6500 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 6500 | 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 6500 | 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO EV | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SONIC | 2019, 2020 |
| CHEVROLET SPARK | 2019, 2020, 2021, 2022 |
| CHEVROLET SUBURBAN | 2019, 2020, 2021, 2022 |
| CHEVROLET SUBURBAN | 2024 |
| CHEVROLET SUBURBAN 1500 | 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET TAHOE | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET TRAILBLAZER | 2019 to 2020 |
| CHEVROLET TRAILBLAZER | 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET TRAVERSE | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET TRAX | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET VOLT | 2019 |
| CHEVROLET duplicate SILVERADO 5500 | 2019 |
| GMC 3500HD | 2024 |
| GMC ACADIA | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| GMC CANYON | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| GMC HUMMER EV PICKUP | 2022, 2023, 2024, 2025 |
| GMC SAVANA | 2019, 2020, 2021, 2022, 2023, 2024 |
| GMC SAVANA 2500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 3500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 3500 | 2025 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA CUTAWAY VAN | 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 1500 | 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 1500 | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2019, 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 2019, 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA DENALI | 2019, 2020 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA EV | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| GMC TERRAIN | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| GMC YUKON | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| GMC YUKON DENALI | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON XL | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| GMC YUKON XL 1500 | 2023 (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.
| 24V937000 | 2024-12-18. FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM |
|---|---|
| 24V925000 | 2024-12-12. FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM |
| 24V320000 | 2024-05-09. ELECTRICAL SYSTEM:PROPULSION SYSTEM; ELECTRICAL SYSTEM:WIRING |
| 24V133000 | 2024-02-22. ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING |
| 2023210 | 2023-04-06. Electrical |
| 23V247000 | 2023-04-06. ELECTRICAL SYSTEM:WIRING |
| 21V421000 | 2021-06-10. AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT; ELECTRICAL SYSTEM:SOFTWARE |
| 2021166 | 2021-03-18. Electrical |
| 21V189000 | 2021-03-18. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES |
| 20V790000 | 2020-12-17. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| N242468490-02 | 2026-05-28. Service campaign. Certain vehicles may have missing cavity plugs from the rear chassis harness electrical connector. Dealers are to inspect the rear chassis harness and replace missing harness plugs as necessary. |
|---|---|
| N252529080 | 2026-04-01. Service campaign. Service Update. Certain vehicles listed above may be missing a high voltage header plug on the RESS battery pack drive motor connector. Dealers are to inspect the RESS pack connectors and install the proper HV Header Plug if missing. |
| PIE0831A | 2026-03-31. Service bulletin. This engineering information (EI) closure ends the need for gathering further information from technicians in regard to the Malfunction Indicator Lamp (MIL) illuminated on Driver Information Center (DIC), DTC P0299 Set. |
| PIE0829A | 2026-03-31. Service bulletin. This engineering information (EI) closure ends the need for gathering further information from technicians in regard to the liftgate not opening and/or partially opening. |
| N252515590 | 2026-01-27. 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. |
| 25-NA-021 | 2025-12-03. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Radio Software Update W23E-178.1.2-M174-SQBR6-93.3. |
| 24-NA-227 | 2025-12-02. Service bulletin. This service bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM. |
| 25-NA-061 | 2025-11-15. Service bulletin. This technical bulletin provides a procedure to correct the condition of Driver or Passenger Rear Door Handle Will Not Fold In. |
| 24-NA-227 | 2025-11-15. Service bulletin. This service bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM. |
| 25-NA-121 | 2025-10-27. Service bulletin. This service bulletin provides information on the radio software related issues to update the radio to the latest software version Y177. |