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Service bulletin 21NA135

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 id10214223
Published by NHTSA2022-06-21
Manufacturer's number21NA135
Manufacturer's date2022-02-04
NHTSA componentEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

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

Equipment and accessories, Labels and manuals

Vehicles listed
BUICK CASCADA2019
BUICK ENCLAVE2019, 2020, 2021, 2022
BUICK ENCORE2019, 2020, 2021, 2022
BUICK ENCORE GX2020, 2021, 2022
BUICK ENVISION2019, 2020, 2021, 2022
BUICK LACROSSE2019
BUICK REGAL2019, 2020
CADILLAC ATS2019
CADILLAC CT42020, 2021, 2022
CADILLAC CT52020, 2021, 2022
CADILLAC CT62019, 2020
CADILLAC CTS2019
CADILLAC ESCALADE2019, 2020
CADILLAC ESCALADE2022
CADILLAC ESCALADE ESV2019, 2020, 2021, 2022
CADILLAC ESCALADE NA2021 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC XT42019, 2020, 2021, 2022
CADILLAC XT52019, 2020, 2021, 2022
CADILLAC XT62020, 2021, 2022
CADILLAC XTS2019
CHEVROLET BLAZER2019, 2020, 2021, 2022
CHEVROLET BOLT EUV2022
CHEVROLET BOLT EV2019, 2020, 2021, 2022
CHEVROLET CAMARO2019, 2020, 2021, 2022
CHEVROLET COLORADO2019, 2020, 2021, 2022
CHEVROLET CORVETTE2019, 2020, 2021, 2022
CHEVROLET CRUZE2019
CHEVROLET EQUINOX2019, 2020, 2021, 2022
CHEVROLET EXPRESS2019, 2020, 2021
CHEVROLET IMPALA2019, 2020
CHEVROLET MALIBU2019, 2020, 2021, 2022
CHEVROLET SILVERADO 15002019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 45002019 (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
CHEVROLET TAHOE2019, 2020, 2021, 2022
CHEVROLET TRAILBLAZER2021, 2022
CHEVROLET TRAVERSE2019, 2020, 2021, 2022
CHEVROLET TRAX2019, 2020, 2021, 2022
CHEVROLET VOLT2019
GMC ACADIA2019, 2020, 2021, 2022
GMC CANYON2019, 2020, 2021, 2022
GMC HUMMER EV PICKUP2022
GMC SAVANA2019, 2020, 2021, 2022
GMC SIERRA 15002019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2019 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2019, 2020, 2021
GMC TERRAIN NA2022 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2019, 2020, 2021, 2022
GMC YUKON XL2019, 2020, 2021, 2022

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

Recalls for the same vehicles and component
20221602022-03-31. Accessories
20214092021-07-01. Label
21V4970002021-07-01. EQUIPMENT:OTHER:LABELS
21V4960002021-07-01. EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER
20213652021-06-10. Accessories
21V4400002021-06-10. EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT:STAND
20V2950002020-05-21. EQUIPMENT:OTHER:LABELS; TIRES
20201652020-04-16. Accessories
20194942019-10-03. Accessories
19V4280002019-06-11. EQUIPMENT

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
22-NA-0962024-05-08. Service bulletin. This informational bulletin provides information for dealers/technicians on Customer Education Bulletin for Google Built-in Radio.
23-NA-0642024-05-02. Service bulletin. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
21-NA-2492024-05-01. Service bulletin. This service bulletin provides repair information to correct a customer concern of the carpet appearance near the center console area.
21-NA-1552024-04-23. Service bulletin. This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector.
20-NA-1322024-04-23. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
17-NA-0522024-04-23. Service bulletin. This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed.
PIP59722024-04-15. Service bulletin. This Preliminary information communicates the possibility of misboxed/mislabled service parts.
PIT61382024-04-15. Service bulletin. This Preliminary information communicates and issue with the LED right above the wireless charging pad being inoperative and how to resolve the concern with the LED.
PIC6486E2024-04-15. Service bulletin. This Preliminary information communicates to dealer that GM is aware of the issue and is working on a resolution.
PIT5992A2024-04-15. Service bulletin. This preliminary information discusses a condition that may arise from the drivers window switch sending an errant message causing the vehicle to enter manual fob learn mode.