# Service bulletin 21\-NA\-061 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: 10234107 - Published by NHTSA: 2023\-04\-12 - Manufacturer's number: 21\-NA\-061 - Manufacturer's date: 2023\-03\-16 - NHTSA component: ELECTRICAL SYSTEM; EQUIPMENT ## NHTSA's summary This service bulletin provides information for dealers on Using EL\-52545 When Diagnosing PEPs Transmitter Key Fobs. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10234107-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10234107-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Electrical system, Equipment and accessories ## Vehicles listed - 2022 BRIGHTDROP EV600 - 2023 BRIGHTDROP ZEVO 600 - 2020 to 2023 BUICK ENCLAVE - 2020 to 2022 BUICK ENCORE - 2023 BUICK ENCORE - 2020 to 2023 BUICK ENCORE GX - 2020 to 2023 BUICK ENVISION - 2020 BUICK LACROSSE - 2020 BUICK REGAL - 2020 BUICK REGAL TOURX - 2020 to 2023 CADILLAC CT4 - 2020 to 2023 CADILLAC CT5 - 2020 CADILLAC CT6 - 2021 CADILLAC CT6 - 2020 to 2023 CADILLAC ESCALADE - 2020 to 2023 CADILLAC ESCALADE ESV - 2021 CADILLAC ESCALADE NA - 2023 CADILLAC LYRIQ - 2020 to 2023 CADILLAC XT4 - 2020 to 2023 CADILLAC XT5 - 2020 to 2023 CADILLAC XT6 - 2020 CADILLAC XTS - 2020 CHEVROLET 3500 - 2021 CHEVROLET 3500 - 2022 CHEVROLET 3500 - 2020 CHEVROLET 4500 - 2022 CHEVROLET 4500 - 2020 to 2022 CHEVROLET 4500HD - 2020 to 2022 CHEVROLET 4500XD - 2020 to 2022 CHEVROLET 5500HD - 2020 to 2022 CHEVROLET 5500XD - 2019 CHEVROLET 6500 - 2022 CHEVROLET 6500HD - 2020 to 2023 CHEVROLET BLAZER - 2022 to 2023 CHEVROLET BOLT EUV - 2020 to 2023 CHEVROLET BOLT EV - 2020 to 2023 CHEVROLET CAMARO - 2020 to 2023 CHEVROLET COLORADO - 2020 to 2023 CHEVROLET CORVETTE - 2020 to 2023 CHEVROLET EQUINOX - 2020 to 2021 CHEVROLET EXPRESS - 2023 CHEVROLET EXPRESS 2500 - 2023 CHEVROLET EXPRESS 3500 - 2020 to 2023 CHEVROLET EXPRESS CUTAWAY VAN - 2020 CHEVROLET IMPALA - 2020 to 2023 CHEVROLET MALIBU - 2021 CHEVROLET ONIX - 2020 to 2023 CHEVROLET SILVERADO 1500 - 2020 to 2023 CHEVROLET SILVERADO 2500 - 2020 to 2023 CHEVROLET SILVERADO 3500 - 2020 to 2023 CHEVROLET SILVERADO 4500 - 2019 to 2021 CHEVROLET SILVERADO 5500 - 2023 CHEVROLET SILVERADO 5500 - 2021 to 2023 CHEVROLET SILVERADO 6500 - 2020 CHEVROLET SONIC - 2020 to 2022 CHEVROLET SPARK - 2020 to 2023 CHEVROLET SUBURBAN - 2021 to 2022 CHEVROLET SUBURBAN 1500 - 2020 to 2023 CHEVROLET TAHOE - 2020 CHEVROLET TRAILBLAZER - 2021 to 2023 CHEVROLET TRAILBLAZER - 2020 to 2023 CHEVROLET TRAVERSE - 2020 to 2023 CHEVROLET TRAX - 2020 to 2023 GMC ACADIA - 2020 to 2023 GMC CANYON - 2022 to 2023 GMC HUMMER EV PICKUP - 2020 to 2023 GMC SAVANA - 2020 to 2023 GMC SIERRA 1500 - 2020 to 2023 GMC SIERRA 2500 - 2020 to 2023 GMC SIERRA 3500 - 2020 GMC SIERRA DENALI - 2020 to 2023 GMC TERRAIN - 2022 GMC TERRAIN NA - 2020 to 2023 GMC YUKON - 2020 to 2023 GMC YUKON XL ## Recalls for the same vehicles and component - [25V876000](/recalls/nhtsa/25V876000.md), 2025-12-17: EQUIPMENT ADAPTIVE/MOBILITY:WHEELCHAIR RESTRAINTS/SECUREMENT:LATCH/ANCHOR: - [24V133000](/recalls/nhtsa/24V133000.md), 2024-02-22: ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING - [2023210](/recalls/tc/2023210.md), 2023-04-06: Electrical - [23V247000](/recalls/nhtsa/23V247000.md), 2023-04-06: ELECTRICAL SYSTEM:WIRING - [22V708000](/recalls/nhtsa/22V708000.md), 2022-09-22: EQUIPMENT:OTHER:LABELS - [2022160](/recalls/tc/2022160.md), 2022-03-31: Accessories - [21V497000](/recalls/nhtsa/21V497000.md), 2021-07-01: EQUIPMENT:OTHER:LABELS - [2021365](/recalls/tc/2021365.md), 2021-06-10: Accessories - [21V440000](/recalls/nhtsa/21V440000.md), 2021-06-10: EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT:STAND - [21V421000](/recalls/nhtsa/21V421000.md), 2021-06-10: AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT; ELECTRICAL SYSTEM:SOFTWARE ## Other bulletins for the same vehicles and component - [N252515590](/bulletins/11027795.md), 2026-01-27, Service campaign: ELECTRICAL SYSTEM. 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. - [24\-NA\-235](/bulletins/11024497.md), 2025-10-27, Service bulletin: ELECTRICAL SYSTEM; STEERING. This technical bulletin provides a procedure to correct the condition of Steering Column Rattle and Turn Signal Over Cancels. - [24\-NA\-170](/bulletins/11024494.md), 2025-10-27, Service bulletin: ENGINE; VISIBILITY/WIPER; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of Check Engine Lamp Illuminated with HVAC Related DTC. - [23\-NA\-170](/bulletins/11024486.md), 2025-10-25, Service bulletin: ELECTRICAL SYSTEM; ENGINE. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure. - [23\-NA\-201](/bulletins/11024378.md), 2025-10-21, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM; STEERING. 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\-119](/bulletins/11024331.md), 2025-10-16, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. 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. - [22\-NA\-161](/bulletins/11023368.md), 2025-09-27, Service bulletin: ELECTRICAL SYSTEM; VISIBILITY/WIPER. This informational bulletin provides information for dealers/technicians on power folding mirrors do not fold at the same speed. - [25\-NA\-115](/bulletins/11022871.md), 2025-09-06, Service bulletin: SEATS; ELECTRICAL SYSTEM. This service bulletin provides information on the Headrest Audio Speaker distortion and the correction for this condition including wire to wire repair. - [24\-NA\-078](/bulletins/11020268.md), 2025-07-08, Service bulletin: ENGINE; POWER TRAIN; ELECTRICAL SYSTEM. This bulletin advises the tech to replace the starter and not the trans if grinding or growling is heard from the transmission area. - [25\-NA\-101](/bulletins/11019755.md), 2025-06-26, Service bulletin: AIR BAGS; ELECTRICAL SYSTEM; SEATS. This service bulletin provides information on the restraint warning lamp being illuminated and the correction to this by replacing the passenger presence module. JSON: [/v1/bulletins/10234107](/v1/bulletins/10234107) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2021-NA-061&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10234107&vehicle=Service%20bulletin%2021-NA-061)