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Service bulletin 15038 MESSAGE

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 id10089958
Published by NHTSA2017-01-31
Manufacturer's number15038 MESSAGE
Manufacturer's date2015-06-26
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

15038 - DEALER MESSAGE ONLY. SELECT 2015 VEHICLES WILL RECEIVE A SOFTWARE DOWNLOAD VIA ONSTAR® TO UPDATE THE SOFTWARE FOR THE ELECTRONIC CLIMATE CONTROL (ECC) SYSTEM. THE UPDATE WILL BE PERFORMED ON DEALER INVENTORY VEHICLES, WITH THE UPDATE OCCURRING DURING THE NIGHT TIME HOURS OF 1AM TO 5AM EDT. UPDATES WILL BE ROLLED OUT TO THE INVENTORY STARTING 6/29/2015 AND COMPLETE BY END OF SEPTEMBER 2015. NO FURTHER ACTION IS REQUIRED BY THE DEALER. THIS UPDATE WILL TAKE APPROXIMATELY 15 MINUTES.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Software

Vehicles listed
BUICK ENCORE2015
CADILLAC ATS2015
CADILLAC CTS2015
CADILLAC ESCALADE2015
CADILLAC ESCALADE ESV2015 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC XTS2015
CHEVROLET COLORADO2015
CHEVROLET CORVETTE2015
CHEVROLET SILVERADO 15002015 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002015 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002015 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2015
CHEVROLET TAHOE2015
GMC CANYON2015
GMC SIERRA 15002015 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002015 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002015 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2015

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

Recalls for the same vehicles and component
14V3010002014-06-06. ELECTRICAL SYSTEM:SOFTWARE; SEAT BELTS:FRONT:WARNING LIGHT/DEVICES

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

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