Bulletin No.:

Service Bulletin

Date:

19-NA-218
December, 2023

TECHNICAL
Subject:

Ticking Noise from the Engine
This Service Bulletin replaces PIP5606E. Please discard all versions of PIP5606.

Brand:
Cadillac

Model:
CTS
Escalade
Camaro
Corvette
Silverado
1500 (New
Model 12th
Digit VIN =
7) - 4WD

Model Year:
from
2019
2019

Chevrolet

Transmission:

2023

2019
2021
—

Silverado LD

2019

2019

Silverado
1500

2023

Tahoe

Engine:
5.3L, 6.2L (LT4,
L83, L86, L87)

2023

2022

Suburban

to

2019

2022

Silverado
1500 New
(RPO J22,
VIN Digit 5 =
A / D)

from

2019

Silverado
1500 (New
Model)
Silverado
1500 LTD
(RPO J21,
VIN Digit 5 =
W / Y)

VIN:
to

2023
2019

Copyright 2023 General Motors LLC. All Rights Reserved.

—

4.3L, 5.3L, 6.2L
(LT1, LT2, LT4,
LV3, L82, L83,
L84, L86, L87)

—

Page 2
Brand:

December, 2023
Model:
Sierra
Limited
Sierra 1500
(New Model)

GMC

Sierra 1500
Limited
(RPO J21,
VIN Digit 5 =
8 / 9)
Sierra 1500
New (RPO
J22, VIN
Digit 5 = H
/ U)

Model Year:
from

to

from

to

Engine:

Transmission:

4.3L, 5.3L, 6.2L
(LT1, LT2, LT4,
LV3, L82, L83,
L84, L86, L87)

—

2019
2021

2022

2023

Yukon
Models

2019

Condition

VIN:

2019

Sierra 1500

Involved Region or Country

Bulletin No.: 19-NA-218

2022

—

—

2023

North America, Argentina, Brazil, Chile, Colombia, Ecuador, Paraguay, Peru, Uruguay,
Europe, Middle East, Iraq, Israel, Palestine, Japan, Cadillac Korea (South Korea), GM
Korea Company, Australia/New Zealand
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.
Australia and New Zealand Dealers - Please refer to SEI-00000627 for further
information.

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.

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 and lifter guides on
the affected banks. Refer to Valve Lifter
Replacement in SI.
Important: Any time a valve lifter is replaced, the valve
lifter guide must also be replaced.

Bulletin No.: 19-NA-218

December, 2023

Page 3

Parts Information
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.
Causal Part

Description

Part Number

Qty
2 per bank (6 CYL DFM)

X

LIFTER, VLV (Active)

12698946

4 per bank (8 CYL AFM)
8 per bank (8 CYL DFM)

X

4 per bank (6 CYL)

LIFTER, VLV (NON-ACTIVE LIFTERS)

12698945

N/A

GUIDE, VLV LFTR

Refer to EPC

As Required

N/A

GASKET, CYL HD (L82, L83, L84)

12622325

1

N/A

GASKET, CYL HD (LC8, L96)

12610046

1

N/A

GASKET, CYL HD (LT1, L87, L86, LT2)

12688943

1

N/A

GASKET, CYL HD (LV3)

12632968

1

N/A

BOLT, CYL HD (M12x1.75 x 102)

Refer to EPC

As Required

N/A

BOLT, CYL HD (M12x1.75 x 134)

Refer to EPC

As Required

N/A

BOLT, EXH MANIF

Refer to EPC

As Required

N/A

GASKET, VLV RKR ARM CVR

12630883

As Required (6 CYL)

N/A

GASKET, VLV RKR ARM CVR

Refer to EPC

As Required (8 CYL)

N/A

GASKET, EXH MANIF

Refer to EPC

As Required

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

N/A

PIPE, FUEL FEED INTER (FROM PMP
TO CROSSRAIL LINE)

Refer to EPC

1

N/A

GASKET, INT MANIF

Refer to EPC

N/A

GASKET, W/PMP

12682391

2

N/A

SEAL, KIT F/INJR (O-ring)

Refer to EPC

As Required

4 per bank (8 CYL non DFM)

6 (6 CYL)
8 (8 CYL)

Page 4

December, 2023

Bulletin No.: 19-NA-218

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

16

Modified

Released February 14, 2020
Revised May 28, 2020 – Added RPO LT2 to Corvette and Cylinder Head Gasket P/Ns
12632968 (LV3) and 12688943 (L87) to Parts Information.
Revised December 01, 2020 – Updated the Quantity information for P/N 12626354 and
12672366 in the Parts Information section.
Revised December 16, 2020 – Added the 2021 Model Year to Applicable Vehicles, added
Engine RPOs and updated the Parts Information section.
Revised September 08, 2021 – Added Australia/New Zealand to Involved Region or
Country section and updated the Parts Information section.
Revised December 17, 2021 – Added the 2022 Model Year to Applicable Vehicles and
updated a Gasket and both Valve Lifter part numbers and added Gasket part number
12630883.
Revised March 30, 2022 – Added PIPE, FUEL FEED INTER (FROM PMP TO
CROSSRAIL LINE) to Parts Information section.
Revised July 11, 2022 – Added an Important statement above the Service Procedure and
information for P/N 12630883 (V6) and 12619787 (V8) in the Parts Information section.
Revised January 20, 2023 – Added Exhaust Manifold Bolts to Parts Information section
and updated the Involved Region or Country section.
Revised February 08, 2023 – Updated SEAL, KIT F/INJR (O-ring) to Refer to EPC in the
Parts Information section.
Revised April 05, 2023 – Added a statement for Australia/New Zealand dealers in the
Correction section and updated applicable parts to Refer to EPC in the Parts Information
section.
Revised April 17, 2023 – Removed Engine RPOs LC8 and L96.
Revised June 01, 2023 – Added the 2023 Model Year to applicable vehicles and changed
quantity for P/N 12682391.
Revised September 07, 2023 – Removed LT5 from Engine section, added lifter guide
replacement information to Step 4 and Important statement to the Service Procedure.
Revised October 27, 2023 – Consolidated part numbers and removed duplicated parts
from the Parts Information section.
Revised December 22, 2023 – Updated part numbers in the Parts Information section.

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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