22-NA-216

Bulletin No.:
Service Bulletin
Date:
22-NA-216
November, 2022
INFORMATION
Subject:
Information on Concern of an Engine Thermostat Tick Noise and/or Running Hot
This bulletin replaces PIP5212D. Please discard PIP5212D.
Brand:
Model:
CT5
Cadillac
Chevrolet
Model Year:
from
to
2023
2023
VIN:
from
to
Engine:
LT4
CTS
2016
2019
LT4
Escalade Models
2015
2023
L86, L87
Camaro
2016
2023
LT1, LT4
Corvette
2014
2023
LT1, LT2,
LT4, LT5
Silverado 1500
2014
2018
Silverado 1500
(New Model)
2019
2019
Silverado LD
2019
2019
Silverado 1500
2020
2021
Silverado 1500 - LTD
(RPO J21,
VIN Digit 5 = W/Y)
—
—
LV3, L82, L83,
L84, L86, L87
2022
2022
Silverado 1500
2023
2023
Silverado
2500HD/3500HD
2020
2023
L8T, L96
Suburban
2015
2023
L83, L84, L87
Tahoe
2015
2020
L83, L84,
L86, L87
Silverado 1500 - New
(RPO J22,
VIN Digit 5 = A)
Copyright 2022 General Motors LLC. All Rights Reserved.
Transmission:
—
Page 2
Brand:
GMC
November, 2022
Model Year:
Model:
from
to
Sierra 1500
2014
2018
Sierra 1500 (New Model)
2019
2019
Sierra Limited
2019
2019
Sierra 1500
2020
2021
Sierra 1500 - Limited
(RPO J21,
VIN Digit 5 = 8/9)
Bulletin No.: 22-NA-216
VIN:
from
to
Engine:
Transmission:
LV3, L82, L83,
L84, L86, L87
2022
2022
—
—
—
Sierra 1500 - New (RPO
J22, VIN Digit 5 = H/U)
Sierra 1500
2023
2023
Sierra 2500HD/3500HD
2015
2023
L8T, L96
Yukon Models
2015
2023
L83, L84,
L86, L87
Involved Region or Country
North America, Europe, Russia, Middle East, Iraq, Israel, Palestine, Argentina, Brazil,
Bolivia, Chile, Colombia, Ecuador, Paraguay, Peru, Japan, Cadillac Korea (South Korea),
GM Korea Company, China, Thailand, Australia/New Zealand, Other Africa
Condition
Some technicians may find the engine running hot and/or has a tick noise from the
thermostat area.
Some technicians may also find a repair was previously performed on said vehicle.
Cause
This condition may be caused by the cylinder head gasket being installed incorrectly after
a service procedure requiring the cylinder head to be removed and replaced.
Inspect the position of the head gasket locating tabs to determine if the head gasket(s)
has been possibly installed backwards.
Per the attached pictures, the head gasket locating tabs for both of the engine cylinder
banks should be toward the front of the engine:
Information
3960230
Bulletin No.: 22-NA-216
November, 2022
Page 3
3960232
– #1 is Bank 1 tab near cylinder 3
– #2 is Bank 2 tab near cylinder 4
– #3 is the front of the engine
If the head gasket locating tabs are found to be closer to cylinders 5 or 6, this indicates
the head gaskets were installed incorrectly, restricting the engine coolant flow.
Replace the head gasket for this concern.
Note: GEN5+ engines (L82, L84, L87 all model years).
This noise can sound more like a scraping noise (similar to a failed bearing type noise) on
these engines, generally the noise can be heard near the water pump area and it goes
away when the belt is removed. This noise could have developed after the head gasket
was replaced for another engine repair procedure.
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.
Version
1
Modified
Released October 26, 2022
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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