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Service bulletin 17298

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 id10156970
Published by NHTSA2019-04-08
Manufacturer's number17298
Manufacturer's date2017-08-01
NHTSA componentSERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

17298-Service Update. Some 2017 vehicles may have been assembled with the wrong fasteners retaining the brake master cylinder to the brake vacuum booster. If this condition is present, it may not be noticed until mileage accumulates. Once mileage accumulates, potential exists for these fasteners to loosen gradually, resulting in brake pedal performance that is noisy, long in travel and spongy in behavior. Progressively longer stopping distances may also be experienced and, eventually, a driver information center (DIC) message of ?Service Brake Assist? will appear. Dealer will replace the brake master cylinder nuts.

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

Brakes, Equipment and accessories, Brake master cylinder

Vehicles listed
CADILLAC ESCALADE2017
CADILLAC ESCALADE ESV2017
CHEVROLET SUBURBAN2017
CHEVROLET TAHOE2017
GMC YUKON2017
GMC YUKON XL2017

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