NHTSA ID Number: 10176613
Manufacturer Communication Number: 19NA218
TSB/Document Date: 2020-06-22
Summary
This technical bulletin provides a service procedure to correct a condition of Ticking Noise from the Engine.
Service Bulletin
Bulletin No.:
19-NA-218
Date:
June, 2020
TECHNICAL
Subject:
Ticking Noise from the Engine
This bulletin replaces PIP5606E. Please discard PIP5606E.
Brand:
Model:
Model Year:
VIN:
to
CTS
2019
2019
6.2L (LT4)
Escalade
2019
2020
5.3L, 6.2L
(L83, L86)
Camaro
2019
2020
6.2L (LT1, LT4)
2019
2019
6.2L (LT1,
LT4, LT5)
2020
2020
6.2L (LT2)
Silverado LD
2019
2019
5.3L, 6.0L, 6.2L
(L83, L86, L96)
Silverado
1500 (New
Model)
2019
2020
Suburban
2019
2020
5.3L (L83, L86)
Tahoe
2019
2020
5.3L, 6.0L, 6.2L
(L83, L86, L96)
Sierra
Limited
2019
2019
5.3L, 6.0L, 6.2L
(L83, L86, L96)
Sierra 1500
(New Model)
2019
2020
4.3L, 5.3L, 6.2L
(L84, L87, LV3)
Yukon
Models
2019
2020
5.3L, 6.2L
(L83, L86)
Corvette
from
to
Engine:
from
Involved Region or Country
Condition
—
—
4.3L, 5.3L, 6.2L
(L84, L87, LV3)
—
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
Some customers may comment that they hear a ticking noise coming from the engine
when cold.
⇒ 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.
Copyright 2020 General Motors LLC. All Rights Reserved.
Page 2
June, 2020
Service Procedure
Allow the engine to sit overnight.
Note: You may need to allow 5-7 minutes to confirm.
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.
Parts Information
Note: Refer to Service Bulletin 20-NA-038 for
additional information on AFM and DFM usage.
Causal
Part
Description
Part
Number
LIFTER, VLV
(Active)
12680871
Qty
4 per bank (8
CYL AFM)
Description
Part
Number
Qty
N/A
GASKET, CYL
HD (LT1)
12659260
1
N/A
GASKET, CYL
HD (LV3)
12632968
1
N/A
BOLT, CYL HD
(M12x1.75x102)
11611976
Refer
to EPC
N/A
BOLT, CYL HD
(M12x1.75x134)
11546959
Refer
to EPC
N/A
GASKET, VLV
RKR ARM CVP
12619787
1
N/A
GASKET, EXH
MANIF
12657093
1
N/A
PIPE, FUEL
FEED INTR
12677002
1
N/A
PIPE, FUEL
FEED INTER
12679463
1
N/A
GASKET, INT
MANIF
12626354
1
N/A
GASKET, W/PMP
12682391
1
N/A
12672366
1
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.
8 per bank (8
CYL DFM)
Labor
Operation
4 per bank
(6 CYL)
4062390
Valve Lifter Replacement Right Side
4 per bank (8
CYL
non DFM)
4062391
Valve Lifter Replacement Both Sides
4062410
Valve Lifter Replacement Left Side
4062450
Valve Lifter Replacement
LIFTER, VLV
(NON-ACTIVE
LIFTERS)
12648846
N/A
GASKET, CYL
HD (L84)
12622325
1
N/A
GASKET, CYL
HD (L87)
12688943
1
X
Causal
Part
Warranty Information
2 per bank (6
CYL DFM)
X
Bulletin No.: 19-NA-218
Description
Labor Time
Use
Published
Labor
Operation
Time
Version
2
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.
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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TSB/Document ID: 19NA218
Replacement Service Bulletin Number:
MFR Communication Date: 2020-05-28
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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