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Service bulletin GCUS-3-315

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 id10126410
Published by NHTSA2017-12-22
Manufacturer's numberGCUS-3-315
Manufacturer's date2015-10-14
NHTSA componentEXTERIOR LIGHTING:BRAKE LIGHTS

NHTSA's summary

15582 - Service Update. This bulletin provides a service procedure to reprogram the EBCM on certain 2014-2015 model year Cadillac ELR and 2014-2015 Chevrolet Spark EV vehicles. These vehicles may illuminate the brake lamps for 1 second when the vehicle is decelerating up a 16% grade, but with accelerator pedal input.

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

Lighting, Brake lights

Vehicles listed
CADILLAC ELR2014, 2015
CHEVROLET SPARK EV2014, 2015 (the catalog's model; the bulletin names a series or trim of it)

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
02-08-42-001I2017-08-31. Service bulletin. This informational bulletin provides an out line on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage and what should be considered warranty replacement and not
PIC58622017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have brake lights remain on with the vehicle off and parked and/or the vehicle battery goes dead. Technician will need to inspect for aftermarket parts.
SB-155822016-06-22. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.