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Service bulletin 21-NA-244

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 id10231404
Published by NHTSA2023-02-07
Manufacturer's number21-NA-244
Manufacturer's date2023-01-17
NHTSA componentELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER

NHTSA's summary

This service bulletin provides a repair procedure to correct a customer concern of a No Fob detected message on Driver Information Center (DIC) and/or No Crank / No Start condition.

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, Ignition

Vehicles listed
BUICK ENVISION2021, 2022
CADILLAC CT42020, 2021, 2022
CADILLAC CT52020, 2021, 2022
CADILLAC ESCALADE2021, 2022
CADILLAC ESCALADE ESV2021, 2022
CADILLAC ESCALADE NA2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET CORVETTE2021, 2022
CHEVROLET SUBURBAN2021, 2022
CHEVROLET SUBURBAN 15002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2021, 2022
GMC YUKON2021, 2022
GMC YUKON XL2021, 2022

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

Other bulletins for the same vehicles and component
PIT6015A2024-04-15. Service bulletin. This Preliminary information communicates Diagnostic Tips When Having Difficulties Programming Or Adding Key Fobs / Transmitters.
PIT6006B2024-04-15. Service bulletin. This Preliminary information communicates where to find the back antenna for learning new key fobs.
PIT6006A2024-03-18. Service bulletin. This Preliminary information communicates where to find the back antenna for learning new key fobs.
PIC5650K2023-06-13. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.
PIT5993A2023-05-15. Service bulletin. This Preliminary information communicates an issue with high resistance in the glass breakage loop that could cause a dead battery or unwanted theft alarm. Dealers are to inspect the glass breakage loop.
PIT5873D2023-02-13. Service bulletin. This Preliminary information communicates an issue when remote start is used the engine may stall when the push to start button is pressed. Engineering is working on a fix.
22-NA-1072022-08-03. Service bulletin. This service bulletin provides repair information to correct a customer concern of a Service AWD Message in DIC at Ignition On with DTC C056D Set.
PIC6433A2022-05-16. Service bulletin. This Preliminary information communicates that a service theft deterrent message may display with no DTC's. OnStar turned off the ECM read request to prevent re-occurrence.
21NA1472021-08-09. Service bulletin. This service bulletin provides a repair procedure to correct a customer concern of Coolant and/or Oil Leak, Malfunction Indicator Lamp (MIL) Illuminated?.
21NA0682021-05-10. Service bulletin. This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2021 and newer model year vehicles with RPO ATH (U.S. Only).