19NA218

Bulletin No.:
Service Bulletin
Date:
19-NA-218
December, 2021
TECHNICAL
Subject:
Ticking Noise from the Engine
This bulletin replaces PIP5606E. Please discard PIP5606E.
Brand:
Cadillac
Model:
GMC
VIN:
from
CTS
2019
2019
6.2L (LT4)
Escalade
2019
2022
5.3L, 6.2L (L83,
L86, L87)
Camaro
2019
2022
6.2L (LT1, LT4)
2019
2019
6.2L (LT1,
LT4, LT5)
2020
2022
6.2L (LT2)
Silverado
1500 (New
Model 12th
Digit VIN =
7) - 4WD
2019
2019
4.3L, 5.3L, 6.2L
(LV3, L82,
L84, L87)
Silverado
1500 (New
Model)
2019
2022
4.3L, 5.3L, 6.2L
(LV3, L82,
L84, L87)
—
to
Engine:
to
Corvette
Chevrolet
Model Year:
from
—
Silverado LD
2019
2019
5.3L, 6.0L, 6.2L
(L83, L96, LC8)
Suburban
2019
2022
5.3L, 6.2L (L83,
L84, L86, L87)
Tahoe
2019
2022
5.3L, 6.0L, 6.2L
(L83, L84, L86,
L87, L96)
Sierra
Limited
2019
2019
5.3L, 6.0L (L83,
L96, LC8)
Sierra 1500
(New Model)
2019
2022
4.3L, 5.3L, 6.2L
(L82, L84,
L87, LV3)
Yukon
Models
2019
2022
5.3L, 6.2L (L83,
L84, L86, L87)
Copyright 2021 General Motors LLC. All Rights Reserved.
Transmission:
—
Page 2
December, 2021
Involved Region or Country
Bulletin No.: 19-NA-218
North America, Europe, Russia, Middle East, Iraq, Israel, Palestine, Argentina, Brazil,
Chile, Colombia, Ecuador, Paraguay, Peru, Uruguay, Venezuela, Japan, Cadillac Korea
(South Korea), GM Korea Company, Thailand, Australia/New Zealand
Some customers may comment that they hear a ticking noise coming from the engine
when cold.
Condition
⇒ This ticking noise will mainly occur during the first initial start in the morning.
Cause
This condition may be caused by a lifter not having a sufficient amount of oil during cold
start operation (not pumped up).
Correction
To correct this condition, follow the Service Procedure below.
Service Procedure
Allow the engine to sit overnight.
Note: You may need to allow 5-7 minutes to confirm.
X
X
LIFTER, VLV
(Active)
LIFTER, VLV
(NON-ACTIVE
LIFTERS)
12698946
1
N/A
GASKET, CYL
HD (L87)
12688943
1
N/A
GASKET, CYL HD
(LC8, L96)
12610046
1
N/A
GASKET, CYL
HD (LT1)
12688943
1
N/A
GASKET, CYL
HD (LV3)
12632968
1
N/A
GASKET, CYL HD
(L86, LT2)
12688943
1
N/A
BOLT, CYL HD
(M12x1.75 x 102)
11611976
Refer
to EPC
N/A
BOLT, CYL HD
(M12x1.75 x 134)
11546959
Refer
to EPC
N/A
GASKET, VLV
RKR ARM CVR
12630883
1
N/A
GASKET, VLV
RKR ARM CVR
12619787
1
N/A
GASKET, EXH
MANIF
12657093
1
N/A
SEAL, EXH
MSNIF PIPE (R)
15035747
1
N/A
SEAL, EXH
MSNIF PIPE (L)
15077362
1
N/A
BELT, ACSRY
DRV PRIM
12669858
(L84 L87)
1
N/A
PIPE, FUEL
FEED INTER
Refer
to EPC
1
2 per bank
(6 CYL DFM)
N/A
GASKET, INT
MANIF
12626354
4 per bank
(8 CYL AFM)
N/A
GASKET, W/PMP
12682391
1
8 per bank
(8 CYL DFM)
N/A
SEAL, KIT F/INJR
(O-ring)
12672366
Refer
to EPC
Qty
4 per bank
(6 CYL)
12698945
Qty
12622325
Note: Only select the parts that coincide with the
repair performed. Replace the part with the P/N
outlined in the Electronic Parts Catalog (EPC) in
accordance with the vehicle VIN.
Note: Refer to Service Bulletin# 20-NA-038 for
additional information on AFM and DFM usage.
Part
Number
Part
Number
GASKET, CYL HD
(L82, L83, L84)
Parts Information
Description
Description
N/A
1. Start the vehicle and listen for a tick noise.
• If a tick noise is present, proceed to the
next step.
• If a tick noise is NOT present after running
engine for at least 5 to 7 minutes, release the
vehicle back to the customer.
2. Drive the vehicle through the DFM modes.
3. Check for any misfire DTCs and record:
• If DTCs are found, refer to SI for diagnosis.
• If no DTCs are found and noise still persists,
operate the engine through cylinder
Deactivation test to isolate the cylinder with the
concern.
4. If the noise has been isolated, inspect for a bent
pushrod and/or collapsed lifter.
⇒ If the pushrods are found to be in working
condition, replace the lifters on the affected
banks. Refer to Valve Lifter Replacement in SI.
Causal
Part
Causal
Part
4 per bank
(8 CYL
non DFM)
6 (6 CYL)
8 (8 CYL)
Bulletin No.: 19-NA-218
December, 2021
Page 3
Warranty Information
Note: Only select the labor operation that coincides
with the repair performed.
For vehicles repaired under the Powertrain coverage,
use the following labor operation. Reference the
Applicable Warranties section of Investigate Vehicle
History (IVH) for coverage information.
Labor
Operation
Description
Labor Time
4062390
Valve Lifter Replacement Right Side
4062391
Valve Lifter Replacement Both Sides
4062410
Valve Lifter Replacement Left Side
4062450
Valve Lifter Replacement
Use
Published
Labor
Operation
Time
Version
6
Modified
Released February 14, 2020
May 28, 2020 – Added RPO LT2 to Corvette and Cylinder Head Gasket P/Ns 12632968
(LV3) and 12688943 (L87) to Parts Information.
December 01, 2020 – Updated the Quantity information for P/N 12626354 and 12672366
in the Parts Information section.
December 16, 2020 – Added the 2021 Model Year to certain vehicles, added Engine
RPOs and updated the Parts Information section.
September 08, 2021 – Added Australia/New Zealand to Involved Region or Country
section and updated the Parts Information section.
December 17, 2021 – Added the 2022 Model Year to certain vehicles and updated a
Gasket and both Valve Lifter part numbers and added Gasket part number 12630883.
Additional SI Keywords: P0300, P0301, P0302, P0303,
P0304, P0305, P0306, P0307, P0308, P050D
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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