# Service bulletin 18\-NA\-279 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: 11006371 - Published by NHTSA: 2024\-08\-14 - Manufacturer's number: 18\-NA\-279 - Manufacturer's date: 2024\-07\-26 - NHTSA component: UNKNOWN OR OTHER; ELECTRICAL SYSTEM ## NHTSA's summary This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11006371-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11006371-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Electrical system ## Vehicles listed - 2022 BRIGHTDROP EV600 - 2023 BRIGHTDROP ZEVO 600 - 2019 to 2023 BUICK ENCLAVE - 2019 to 2022 BUICK ENCORE - 2020 to 2023 BUICK ENCORE GX - 2019 to 2023 BUICK ENVISION - 2019 BUICK LACROSSE - 2020 to 2024 CADILLAC CT4 - 2020 to 2024 CADILLAC CT5 - 2019 to 2020 CADILLAC CT6 - 2019 to 2023 CADILLAC ESCALADE - 2019 to 2023 CADILLAC ESCALADE ESV - 2023 to 2024 CADILLAC LYRIQ - 2019 to 2022 CADILLAC XT4 - 2019 to 2025 CADILLAC XT5 - 2020 to 2025 CADILLAC XT6 - 2019 to 2021 CHEVROLET BLAZER - 2022 to 2023 CHEVROLET BOLT EUV - 2019 to 2023 CHEVROLET BOLT EV - 2019 to 2021 CHEVROLET CAMARO - 2019 CHEVROLET CRUZE - 2019 to 2022 CHEVROLET MALIBU - 2019 to 2023 CHEVROLET SILVERADO 1500 - 2019 to 2022 CHEVROLET SPARK - 2019 to 2022 CHEVROLET SUBURBAN - 2021 to 2023 CHEVROLET SUBURBAN 1500 - 2019 to 2023 CHEVROLET TAHOE - 2021 to 2023 CHEVROLET TRAILBLAZER - 2019 to 2021 CHEVROLET TRAVERSE - 2019 to 2022 CHEVROLET TRAX - 2019 CHEVROLET VOLT - 2020 to 2021 GMC ACADIA - 2022 to 2023 GMC HUMMER EV PICKUP - 2019 to 2023 GMC SIERRA 1500 - 2019 to 2023 GMC YUKON - 2019 GMC YUKON DENALI - 2019 to 2023 GMC YUKON XL ## Recalls for the same vehicles and component - [26V494000](/recalls/nhtsa/26V494000.md), 2026-07-30: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY - [25V356000](/recalls/nhtsa/25V356000.md), 2025-05-29: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT:ELECTRICAL:INFOTAINMENT:VIDEO \(TOUCH\)SCREEN/MONITOR/UNIT - [24V812000](/recalls/nhtsa/24V812000.md), 2024-10-31: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY THERMAL:MANAGEMENT:SOFTWARE; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY - [24V481000](/recalls/nhtsa/24V481000.md), 2024-06-27: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY - [24V459000](/recalls/nhtsa/24V459000.md), 2024-06-20: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL - [24V320000](/recalls/nhtsa/24V320000.md), 2024-05-09: ELECTRICAL SYSTEM:PROPULSION SYSTEM; ELECTRICAL SYSTEM:WIRING - [23V682000](/recalls/nhtsa/23V682000.md), 2023-10-12: ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE - [2023486](/recalls/tc/2023486.md), 2023-08-31: Electrical - [23V567000](/recalls/nhtsa/23V567000.md), 2023-08-10: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; AIR BAGS:FRONTAL - [23V367000](/recalls/nhtsa/23V367000.md), 2023-05-25: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY ## Other bulletins for the same vehicles and component - [N252514001](/bulletins/11037980.md), 2026-10-05, Service campaign: ELECTRICAL SYSTEM. Service Update. Certain vehicles listed above may enable the new King Crab Feature through OTA programming or programming at the dealer. Dealers will perform a comprehensive software update. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over\-the\-air \(OTA\) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates. - [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. - [22\-NA\-007](/bulletins/11025552.md), 2025-11-15, Service bulletin: ENGINE; ELECTRICAL SYSTEM. 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. - [25\-NA\-126](/bulletins/11024941.md), 2025-11-05, Service bulletin: ELECTRICAL SYSTEM. This service bulletin provides information on the wireless charging feature not working or intermittently working, with the replacement of the Wireless Charging Module. - [25\-NA\-108](/bulletins/11024499.md), 2025-10-27, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. This bulletin provides a procedure to inspect and verify the drive shafts are over extending past the 5mm tolerance, causing the customers concern of a fluid leak under the vehicle. - [25\-NA\-044](/bulletins/11024498.md), 2025-10-27, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs. - [24\-NA\-202](/bulletins/11024496.md), 2025-10-27, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard \(NACS\) DC Adapter Warranty Claim Information. - [23\-NA\-202](/bulletins/11024487.md), 2025-10-25, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides information on High Voltage Drive Motor Battery \- TAC Approval and Exchange Program for BrightDrop, Chevrolet Silverado EV, and GMC Sierra EV, HUMMER EV/SUV. - [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. JSON: [/v1/bulletins/11006371](/v1/bulletins/11006371) [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%2018-NA-279&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11006371&vehicle=Service%20bulletin%2018-NA-279)