Engine Overheat When Driving Aggressively with Accessory Grill and Outboard Cooler Installed – 2016-2021 Chevrolet Camaro

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Service Bulletin Bulletin No.: 17-NA-261
Date: October, 2020
INFORMATION
Subject: Engine Overheat When Driving Aggressively with Accessory Grille and Outboard
Cooler Installed
Brand: Model:
Model Year: VIN:
Engine: Transmission:
from to from to
Chevrolet Camaro 2016 2021 — All All
Involved Region or Country
North America, Europe, Russia, Middle East, Israel, Palestine, Argentina, Brazil, Chile,
Colombia, Ecuador, Paraguay, Peru, Uruguay, Japan, Cadillac Korea (South Korea), GM
Korea Company, China, Taiwan, Thailand, Singapore, Philippines, Africa
Additional Options (RPOs) Equipped with Accessory Grille (RPO RZ9 or RZB) and Aux Engine Cooler (RPO V18)
Condition Some customers may comment on the engine overheating when driving aggressively
with accessory grille installed in addition to an outboard cooler installed.
Cause This may be due to outboard aero blockers restricting airflow to the outboard coolers,
causing the engine to overheat.
Correction If the vehicle is equipped with (RPO V18) outboard coolers and an accessory grille, the
grille blockers should not be installed. If installed, they should be removed.
Version 3
Modified October 16, 2017 – Added the 2017 and 2018 Model Years.
October 02, 2020 – Added the 2019-2021 Model Years and updated the Involved Region
or Country section.
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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