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Service bulletin PIC6157

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 id10114984
Published by NHTSA2017-08-15
Manufacturer's numberPIC6157
Manufacturer's date2015-12-18
NHTSA componentSERVICE BRAKES, HYDRAULIC

NHTSA's summary

This Preliminary Information communication provides information to the technician about vehicles that have a squeak or squeal noise when the brakes are used. The brake noise is normal with all braking systems and differences in loading, type of driving, or driving style can make a difference in brake wear on the same make and model vehicle.

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

Vehicles listed
CADILLAC ATS2016
CADILLAC CTS2014, 2015, 2016

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

Recalls for the same vehicles and component
15V3580002015-06-09. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
20152452015-06-03. Brakes

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
25-NA-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
21-NA-0432025-02-12. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
21-NA-0432024-12-10. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
17-NA-2392024-11-14. Service bulletin. This bulletin provides information on possible normal brake drag caused by the vehicle parked for an extended period of time.
16-NA-0592024-11-14. Service bulletin. This service bulletin provides information for cleaning the brake calipers that may have staining/discoloring on the paint of the brake caliper.
PIP5596A2024-04-15. Service bulletin. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.
17-NA-0402023-11-22. Service bulletin. This service bulletin provides a procedure to correct a condition of Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies.
16-NA-0592023-11-22. Service bulletin. This service bulletin provides information for cleaning the brake calipers that may have staining/discoloring on the paint of the brake caliper.
17-NA-2392023-11-02. Service bulletin. This bulletin provides information on possible normal brake drag caused by the vehicle parked for an extended period of time.
17-NA-0402023-10-14. Service bulletin. This service bulletin provides a procedure to correct a condition of Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies.