20NA220

Bulletin No.:
Service Bulletin
Date:
20-NA-220
December, 2020
TECHNICAL
Subject:
Rear Camera Inoperable
Brand:
Model:
Chevrolet
Silverado 2500/
3500 HD
GMC
Sierra 2500/3500 HD
Model Year:
from
to
2021
2021
VIN:
from
Engine:
Transmission:
to
Involved Region or Country
Additional Options (RPOs)
Equipped with RPOs 5N5 & ZW9 Rear Camera
Condition
Some customers may comment on the rear camera being inoperative.
Cause
The cause of the condition may be that a change was implemented to the chassis
harness from 2020 to 2021 trucks, there was an issue with camera flicker and circuit 1739
was moved from pin 24 to pin 21.
The camera extension harness P/N 84852714 in the 5N5 Rearview Camera kit was not
updated to correspond to the change in the chassis harness. This mis-match leaves the
camera inoperative when installed by the dealer or upfitter and as such stalls the delivery
to the end customer.
Correction
Move wire from pin 24 to 21 of the terminal in the Rear Camera Harness. Refer to
Repairing Connector Terminals (Terminal Repair) in SI.
Copyright 2020 General Motors LLC. All Rights Reserved.
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December, 2020
Bulletin No.: 20-NA-220
5681292
Bulletin No.: 20-NA-220
December, 2020
Page 3
5681283
Wire connected to Pin 24
Page 4
December, 2020
Bulletin No.: 20-NA-220
5681276
Wire moved to Pin 21
Warranty Information
For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following
labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage
information.
Labor Operation
Description
Labor Time
*5480928
Move wire in pin 24 to pin 21
0.2 hr
*This is a unique Labor Operation for Bulletin use only.
Version
1
Modified
Released December 03, 2020
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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