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Service bulletin 18NA279

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 id10199234
Published by NHTSA2021-07-19
Manufacturer's number18NA279
Manufacturer's date2021-05-12
NHTSA componentLATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM

NHTSA's summary

This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.

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, Latches and locks

Vehicles listed
BUICK ENCLAVE2019, 2020, 2021
BUICK ENCORE2019, 2020, 2021
BUICK ENCORE GX2020, 2021
BUICK ENVISION2019, 2020, 2021
BUICK LACROSSE2019
CADILLAC CT42020, 2021
CADILLAC CT52020, 2021
CADILLAC CT62019, 2020
CADILLAC ESCALADE2019, 2020
CADILLAC ESCALADE ESV2019, 2020, 2021
CADILLAC ESCALADE NA2021 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC XT42019, 2020, 2021
CADILLAC XT52019, 2020, 2021
CADILLAC XT62020, 2021
CHEVROLET BLAZER2019, 2020, 2021
CHEVROLET BOLT EV2019
CHEVROLET CAMARO2019, 2020, 2021
CHEVROLET CRUZE2019
CHEVROLET MALIBU2019, 2020, 2021
CHEVROLET SILVERADO 15002019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 45002020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SPARK2019, 2020, 2021
CHEVROLET SUBURBAN2019, 2020, 2021
CHEVROLET TAHOE2019, 2020, 2021
CHEVROLET TRAILBLAZER2021
CHEVROLET TRAVERSE2019, 2020, 2021
CHEVROLET TRAX2019, 2020, 2021
CHEVROLET VOLT2019
GMC ACADIA2020, 2021
GMC SIERRA 15002019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002020, 2021 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2019, 2020, 2021
GMC YUKON XL2019, 2020, 2021

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

Recalls for the same vehicles and component
24V0600002024-02-01. LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH
21V5600002021-07-23. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
21V4210002021-06-10. AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT; ELECTRICAL SYSTEM:SOFTWARE
20V7900002020-12-17. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
20V7010002020-11-13. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20V3240002020-06-04. LATCHES/LOCKS/LINKAGES:HOOD:LATCH; STRUCTURE:BODY:HOOD
20V1840002020-03-26. LATCHES/LOCKS/LINKAGES:DOORS:LATCH
20V1420002020-03-12. LATCHES/LOCKS/LINKAGES:HOOD:LATCH
20196312019-12-12. Electrical
19V8880002019-12-12. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES

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
N2525155902026-01-27. 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.
22-NA-0072025-11-15. Service bulletin. 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.
24-NA-2022025-10-27. Service bulletin. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
23-NA-1702025-10-25. Service bulletin. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
23-NA-2012025-10-21. Service bulletin. 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-1192025-10-16. Service bulletin. 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.
18-NA-1802025-10-16. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
PIE0753I2025-09-30. Service bulletin. This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering study and analysis.
22-NA-1612025-09-27. Service bulletin. This informational bulletin provides information for dealers/technicians on power folding mirrors do not fold at the same speed.
18-NA-1802025-09-26. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.