Bulletin No.:

Service Bulletin

Date:

16-NA-059
November, 2023

INFORMATION
Subject:

Staining/Discoloring to Brake Caliper Paint

Brand:
Cadillac
Chevrolet

Model:

Model Year:

VIN:

from

to

ATS-V

2016

2018

CTS-V

2016

2018

Camaro

2012

2024

Corvette

2014

2024

Involved Region or Country

from

to

—

Engine:

Transmission:

All

All

North America, Argentina, Brazil, Bolivia, Chile, Colombia, Ecuador, Paraguay, Peru,
Uruguay, Europe, Russia, Middle East, Israel, Japan, GM Korea Company, China,
Taiwan, Philippines, Australia/New Zealand

Condition

4422999

Some customers may comment on a discoloration or black stain on the paint of the brake
calipers.
Cause

This may be caused by high brake pad temperatures during aggressive driving or track
event tarnishing the caliper paint.

Correction
Important: Service agents must comply with all
International, Federal, State, Provincial, and/or
Local laws applicable to the activities it performs
under this bulletin, including but not limited to
handling, deploying, preparing, classifying,
packaging, marking, labeling, and shipping
dangerous goods. In the event of a conflict between
the procedures set forth in this bulletin and the
laws that apply to your dealership, you must follow
those applicable laws.
Copyright 2023 General Motors LLC. All Rights Reserved.

Important: Do NOT replace the brake calipers for this
condition.
This is not a defect in the paint or the caliper.

Page 2

November, 2023

Bulletin No.: 16-NA-059

4423001

Legend
(1)
(2)

Not cleaned using mild polishing
compound
Cleaned using mild polishing compound

If the customer wishes to have the black stain removed,
a very mild polishing compound can be used to remove
the stain.
Important: Do NOT use harsh chemicals or brake
cleaner to attempt to remove the stain. This could
damage the paint on the caliper.

Warranty Information
Labor fees associated with cleaning the calipers should
NOT be charged under warranty. Rather, this should be
customer pay.
Version

4

Modified

Revised May 30, 2017 – Updated the Models and Model Years.
Revised October 14, 2020 – Updated the Models, Model Years and updated formatting to
remove Attention statement and add the Involved Region or Country section.
Revised November 09, 2023 – Added Model Years up to 2024 to Camaro and Corvette,
Australia/New Zealand to Involved Region or Country section and first Important
statement in Correction.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a
job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.

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