16-NA-059

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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