22-NA-027

Service Bulletin
Bulletin No.:
22-NA-027
Date:
June, 2022
TECHNICAL
Subject:
LM2 Diesel With Possible Oil Consumption - DTC P06DD Set
The bulletin replaces PIP5762. Please discard PIP5762.
Brand:
Model:
Cadillac
to
Escalade Models
2021
2022
Silverado 1500
2020
2021
2022
2022
2021
2022
2020
2021
2022
2022
2021
2022
Silverado 1500 - LTD
(RPO J21, VIN Digit
5 = W/Y)
Chevrolet
Silverado 1500 - New
(RPO J22, VIN Digit
5 = A/D)
Suburban
Tahoe
Sierra 1500
GMC
Model Year:
from
Sierra 1500 - Limited
(RPO J21, VIN Digit
5 = 8/9)
Sierra 1500 - New
(RPO J22, VIN Digit
5 = H/U)
Yukon Models
VIN:
from
Engine:
Transmission:
to
LM2
Involved Region or Country
North America, Russia, Middle East, Chile (West), Colombia (West), Ecuador (West),
Paraguay (West), Peru (West), Japan, Cadillac Korea (South Korea), Thailand (ASEAN),
Australia/New Zealand
Condition
Some customers may comment on oil consumption.
Some technicians may find DTC P06DD set.
Cause
Camshaft housing (cover) may have a baffle plate weld that is not adequate.
Copyright 2022 General Motors LLC. All Rights Reserved.
Page 2
June, 2022
Bulletin No.: 22-NA-027
5671019
Correction
5671020
• If the serial number is greater than 21298JDXXX, this bulletin does not apply. Refer to
bulletin 21-NA-272 and SI for appropriate diagnostics.
• If the serial number is less than 21298JDXXX and the customer's concern is oil
consumption:
1. 1) Replace the camshaft housing cover.
2. 2) Replace the #2 glow plug.
Re-evaluate the oil consumption.
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
Refer to Camshaft Housing Replacement in the Service
Manual and Glow Plug Replacement - Cylinder 2 in the
Service Manual.
Parts Information
Use the vehicle identification number (VIN), SI, and the
GM Electronic Parts Catalog to determine the correct
part to order.
Bulletin No.: 22-NA-027
June, 2022
Page 3
Warranty Information
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
4087688*
Description
Replace Camshaft Housing
and Glow Plug
Model
Labor Time
Silverado 1500
Sierra 1500
14.0 hr
Escalade Models
Suburban
Tahoe
Yukon Models
12.3 hr
*This is a unique Labor Operation for Bulletin use only.
Version
3
Modified
Released February 02, 2022
Revised April 19, 2022 - Update Cell-Link in Service Procedure and Update Labor Time
in Warranty Information section.
Revised June 14, 2022 - Update Labor Time in Warranty Information section.
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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