16-NA-244

Bulletin No.:
Service Bulletin
Date:
16-NA-244
March, 2023
INFORMATION
Subject:
Information on Diesel Exhaust Fluid (DEF)
Brand:
Model:
Cadillac
Escalade Models
Chevrolet
Model Year:
from
to
2021
2023
Cruze
2014
2015
Cruze (GEN II VIN B)
2017
2019
Colorado
2016
2022
Express
2010
2022
Equinox
2018
2019
Silverado
2011
2018
Silverado 1500
(New Model)
2020
2021
Silverado 1500 LTD
(RPO J21, VIN Digit
5 = W / Y)
2022
2022
Silverado 1500
2023
2023
Silverado
2500HD/3500HD
2019
2024
Silverado
4500HD, 5500HD
and 6500HD
2019
2023
2021
2023
Silverado 1500 New
(RPO J22, VIN Digit
5 = A / D)
Suburban
Tahoe
Copyright 2023 General Motors LLC. All Rights Reserved.
VIN:
from
to
—
—
Engine:
(Diesel)
Transmission:
(RPO L5D, L5P,
LM2, LML, LGH,
LUZ, LWN, LH7)
—
Page 2
Brand:
GMC
March, 2023
Model:
Model Year:
from
to
Canyon
2016
2022
Savana
2010
2022
Sierra
2011
2018
Sierra 1500
(New Model)
2020
2021
Sierra 1500
2023
2023
Sierra 1500 Limited
(RPO J21, VIN Digit
5 = 8 / 9)
2022
2022
Sierra
2500HD/3500HD
2019
2024
Terrain
2018
2019
Yukon Models
2021
2023
Sierra 1500 New
(RPO J22, VIN Digit
5=H/U
Involved Region or Country
Bulletin No.: 16-NA-244
VIN:
from
to
—
—
Engine:
(Diesel)
Transmission:
(RPO L5D, L5P,
LM2, LML, LGH,
LUZ, LWN, LH7)
—
North America, Europe, Uzbekistan, Russia, Middle East, Iraq, Israel, Palestine,
Argentina, Brazil, Bolivia, Chile, Colombia, Ecuador, Paraguay, Peru, Uruguay,
Venezuela, Japan, GM Korea Company, China, Taiwan, Thailand, Singapore,
Philippines, Australia/New Zealand, Egypt, Other Africa, South Africa
General Information
Cold Weather Operation Information
Note: DEF usage will vary depending on: driving style,
trailer towing, loaded vehicle weight, weather, idle time,
PTO usage.
DEF freezes when exposed to temperatures below -11°
C (12°F). In cold conditions it is normal for DEF to
freeze. The tank and delivery lines are heated to thaw
frozen DEF. When filling the tank in cold conditions, the
vehicle may not recognize the new level until the tank
thaws. In certain cold conditions, it is possible to find
some frozen DEF in the DEF fill pipe opening. If you are
expecting to be in extremely cold areas, it is
recommenced to fill the tank prior to cold temperature
exposure.
On vehicles without a DEF Gauge, As a general rule,
when the DIC shows a DEF level of anything except
OK, you can add at least 2.5 gallons (9.5L). The
amount to add to top off will vary.
Diesel Exhaust Fluid (DEF) is required to maintain
normal vehicle operation and emissions compliance.
When filling the DEF tank, there may be a short delay
before detecting the increased level of fluid and
updating the Driver Information Center (DIC).
Diesel Exhaust Fluid (DEF) has a shelf life of 2 years.
However, this can be reduced if the fluid is exposed to
direct sunlight or above 30°C (86°F) for sustained
periods. All DEF packaging should be labeled with a
production date.
The Driver Information Center (DIC) will display a
series of messages regarding the amount of DEF that
is available. When mileage countdown is zero, the
vehicle speed is reduced. Refer to Owners Manual.
Bulletin No.: 16-NA-244
March, 2023
Page 3
Version
7
Modified
Released August 01, 2016
Revised December 20, 2016 – Updated the Model years and added the Chevrolet Cruze,
Colorado and GMC Canyon models.
Revised September 05, 2017 – Updated Model Years.
Revised October 29, 2020 – Updated Model Years.
Revised January 06, 2022 – Updated the Model Years and added the Chevrolet
Silverado 1500 (New Model) and 4500, 5500 and 6500HD models.
Revised September 14, 2022 — Added the 2023 Model Year, Added Yukon, Suburban,
Escalade Models.
Revised March 16, 2023 – Added the 2024 Model Year to the 2500/3500 Heavy Duty
Trucks.
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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