21NA091

Service Bulletin
Bulletin No.:
21-NA-091
Date:
May, 2021
INFORMATION
Subject:
Information on Normal Rear View Camera Display Operation - Flashing Diamond - Spot
- or UFO like Image on Rear View Camera Display
This bulletin replaces PIT5799A. Please discard PIT5799A.
Brand:
Model:
Model Year:
from
CT4
VIN:
to
from
to
—
—
Engine:
Transmission:
—
—
2020
CT5
Cadillac
Escalade
2020
Escalade
ESV
2021
XT4
Bolt EV
2020
Corvette
Silverado
1500
Chevrolet
Silverado
2500HD/
3500HD
2020
2021
Tahoe
Suburban
Sierra 1500
GMC
Sierra
2500HD/
3500HD
2020
2021
Yukon
Yukon XL
Involved Region or Country
North America, Europe, Uzbekistan, Russia, Middle East, Israel, Palestine, Brazil, Chile,
Colombia, Ecuador, Paraguay, Peru, Japan, GM Korea Company, Cadillac Korea (South
Korea), Thailand, Australia/New Zealand
Additional Options (RPOs)
Equipped with UVI, UVS or UV2
Condition
Some customers may comment on a flashing light present on the radio display when in
Reverse and with the rear view camera on, usually is corrected by an ignition cycle.
Copyright 2021 General Motors LLC. All Rights Reserved.
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Correction
Please communicate to the customer that the rear view camera system and radio display
are functioning as designed and this is a normal condition of their vehicle. Please share
this information with the customer, including a copy of this bulletin.
Technicians should verify that no other conditions are present and return the vehicle to
the customer.
Version
2
Modified
Released April 13, 2021
May 03, 2021 – Added the Cadillac XT4 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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