TSB: BUICK ACADIA, ATS, BLAZER, BOLT EUV, BOLT EV, CAMARO, CANYON, CASCADA, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, ENCLAVE, ENCORE, ENCORE GX, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, HUMMER EV, IMPALA, LACROSSE, MALIBU, REGAL, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SONIC, SPARK, SUBURBAN, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, VOLT, XT4, XT5, XT6, XTS, YUKON, YUKON XL (2019–2022)

Bulletin 21NA135 — June 10, 2021

Bulletin Details

Bulletin ID21NA135
ManufacturerBUICK
ModelsACADIA, ATS, BLAZER, BOLT EUV, BOLT EV, CAMARO, CANYON, CASCADA, COLORADO, CORVETTE, CRUZE, CT4, CT5, CT6, CTS, ENCLAVE, ENCORE, ENCORE GX, ENVISION, EQUINOX, ESCALADE, ESCALADE ESV, EXPRESS, HUMMER EV, IMPALA, LACROSSE, MALIBU, REGAL, SAVANA, SIERRA 1500, SIERRA 2500, SIERRA 3500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SILVERADO 4500HD, SONIC, SPARK, SUBURBAN, TAHOE, TERRAIN, TRAILBLAZER, TRAVERSE, TRAX, VOLT, XT4, XT5, XT6, XTS, YUKON, YUKON XL
Model Years2019–2022
Date IssuedJune 10, 2021
Date Added to NHTSAJune 21, 2022
ComponentCOMMUNICATION: VEHICLE TO INFRASTRUCTURE
Vehicles Affected276 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

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

Affected Vehicles

MakeModelYearComponent
GMC ACADIA 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET BLAZER 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET BOLT EUV 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET BOLT EV 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET CAMARO 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC CANYON 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET COLORADO 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET CORVETTE 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC CT4 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC CT5 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCLAVE 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCORE 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCORE GX 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENVISION 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET EQUINOX 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC ESCALADE 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC ESCALADE ESV 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET EXPRESS 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC HUMMER EV 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET MALIBU 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SAVANA 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 1500 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 2500 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 3500 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 1500 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 2500 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 3500 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SPARK 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SUBURBAN 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TAHOE 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC TERRAIN 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TRAILBLAZER 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TRAVERSE 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TRAX 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT4 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT5 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT6 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC YUKON 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC YUKON XL 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC ACADIA 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC ACADIA 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET BLAZER 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET BLAZER 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET BOLT EV 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET BOLT EV 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET CAMARO 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET CAMARO 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC CANYON 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC CANYON 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET COLORADO 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET COLORADO 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET CORVETTE 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET CORVETTE 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC CT4 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC CT4 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC CT5 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC CT5 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCLAVE 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENCLAVE 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCORE 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENCORE 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCORE GX 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENCORE GX 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENVISION 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENVISION 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET EQUINOX 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET EQUINOX 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC ESCALADE 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC ESCALADE 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC ESCALADE ESV 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC ESCALADE ESV 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET EXPRESS 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET EXPRESS 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET MALIBU 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET MALIBU 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SAVANA 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC SAVANA 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 1500 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC SIERRA 1500 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 2500 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC SIERRA 2500 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 3500 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 1500 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SILVERADO 1500 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 2500 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SILVERADO 2500 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 3500 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SPARK 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SPARK 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SUBURBAN 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SUBURBAN 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TAHOE 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET TAHOE 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC TERRAIN 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC TERRAIN 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TRAILBLAZER 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET TRAILBLAZER 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TRAVERSE 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET TRAVERSE 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TRAX 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET TRAX 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT4 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC XT4 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT5 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC XT5 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT6 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC XT6 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC YUKON 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC YUKON 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC YUKON XL 2021 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC YUKON XL 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC ACADIA 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC ACADIA 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET BLAZER 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET BLAZER 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET BOLT EV 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET BOLT EV 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET CAMARO 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET CAMARO 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC CANYON 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC CANYON 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET COLORADO 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET COLORADO 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET CORVETTE 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET CORVETTE 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC CT4 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC CT4 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC CT5 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC CT5 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC CT6 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC CT6 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCLAVE 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENCLAVE 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCORE 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENCORE 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCORE GX 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENCORE GX 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENVISION 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENVISION 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET EQUINOX 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET EQUINOX 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC ESCALADE 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC ESCALADE 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC ESCALADE ESV 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC ESCALADE ESV 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET EXPRESS 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET EXPRESS 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET IMPALA 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET IMPALA 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET MALIBU 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET MALIBU 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK REGAL 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK REGAL 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SAVANA 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC SAVANA 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 1500 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC SIERRA 1500 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 2500 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC SIERRA 2500 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 3500 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 1500 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SILVERADO 1500 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 2500 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SILVERADO 2500 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 3500 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SONIC 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SONIC 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SPARK 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SPARK 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SUBURBAN 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SUBURBAN 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TAHOE 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET TAHOE 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC TERRAIN 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC TERRAIN 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TRAVERSE 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET TRAVERSE 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TRAX 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET TRAX 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT4 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC XT4 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT5 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC XT5 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT6 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC XT6 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC YUKON 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC YUKON 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC YUKON XL 2020 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC YUKON XL 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC ACADIA 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC ACADIA 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC ATS 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC ATS 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET BLAZER 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET BLAZER 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET BOLT EV 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET BOLT EV 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET CAMARO 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET CAMARO 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC CANYON 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC CANYON 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK CASCADA 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK CASCADA 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET COLORADO 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET COLORADO 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET CORVETTE 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET CORVETTE 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET CRUZE 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET CRUZE 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC CT6 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC CT6 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC CTS 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC CTS 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCLAVE 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENCLAVE 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENCORE 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENCORE 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK ENVISION 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK ENVISION 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET EQUINOX 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET EQUINOX 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC ESCALADE 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC ESCALADE 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC ESCALADE ESV 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC ESCALADE ESV 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET EXPRESS 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET EXPRESS 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET IMPALA 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET IMPALA 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK LACROSSE 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK LACROSSE 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET MALIBU 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET MALIBU 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
BUICK REGAL 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
BUICK REGAL 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SAVANA 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC SAVANA 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 1500 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC SIERRA 1500 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA 2500 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC SIERRA 2500 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC SIERRA DENALI 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC SIERRA DENALI 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 1500 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SILVERADO 1500 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 2500 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SILVERADO 2500 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 3500 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SILVERADO 4500HD 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SILVERADO 4500HD 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SONIC 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SONIC 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SPARK 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SPARK 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET SUBURBAN 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET SUBURBAN 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TAHOE 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET TAHOE 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC TERRAIN 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC TERRAIN 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TRAVERSE 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET TRAVERSE 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET TRAX 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET TRAX 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CHEVROLET VOLT 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CHEVROLET VOLT 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT4 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC XT4 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XT5 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC XT5 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
CADILLAC XTS 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
CADILLAC XTS 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC YUKON 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC YUKON 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
GMC YUKON XL 2019 345000 COMMUNICATION: VEHICLE TO INFRASTRUCTURE
GMC YUKON XL 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

Related BUICK Recalls

CampaignModelYearComponentSummary
REGAL 2013 SUSPENSION:REAR General Motors, LLC (GM) is recalling certain 2012–2013 Buick Regal Turbo and...
REGAL 2012 SUSPENSION:REAR General Motors, LLC (GM) is recalling certain 2012–2013 Buick Regal Turbo and...
ENCLAVE 2026 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER ... General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cad...
ENVISION 2026 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER ... General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cad...
VERANO 2014 AIR BAGS:SIDE/WINDOW General Motors, LLC (GM) is recalling certain 2014 Buick Verano and Chevrolet...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized BUICK dealer. Bring this bulletin ID (21NA135) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.