Bulletin No.: PIP5637C
Published date: N/A

Preliminary Information
PIP5637C 3.0L (RPO LM2) Engine Exchange Program
Models
Brand:

Model:

Model Years:

VIN:
from

to

Engine:

Transmissions:

Chevrolet

Silverado 1500 (New Model)

2020

All

All

3.0L (LM2)

All

GMC

Sierra 1500 (New Model)

2020

All

All

3.0L (LM2)

All

Involved Region or
Country

North America

Condition

Engine Exchange

Cause

New Product Monitoring

This PI will cover the Engine Exchange Program onlyfor the 2020 model listed above.

Additional PIs will be published for each engineor component as they are introduced.
During the launch of the 2020 model year
, the following engine will beunder an exchange program:
3.0L Engine Assembly (RPO LM2)
Product teams continually seek valuable information for engineering improvements.
To assist in this effort, an engine exchange program will be used for the listed engine and vehicles.
The 2020 model year engine exchange program will be administered by the GM Product Quality
Center (PQC).

Please contact the Product Quality Center (PQC) by opening a new case via Dealer Case Management (DCM) From
the DCM home page, click on “New PQC Case” found on the Technical Assistance tab.
Then in Global Connect click on the Support/Chat tab, TAC-PQC Tab, PQC -Parts Restrictions Templates to
Download the appropriate PQC -Parts Restrictions Template and save a copy to your computer, You can attach a
copy of the template to your PQC Case.
Note: (Do Not clear any DTCs prior to contacting the PQC).
Use of the templates will minimize the time spent on the telephone and avoid the need of a second
call to the PQC.
Guidelines for honoring exchange requests under this program are being strictly enforced.

The PQC may refer the dealer technician to TAC if additional diagnosis is required.
TAC will be available for product inquiries that do not require assembly replacement.

Division

PQC Telephone Number

US Cars and Trucks
1-866-654-7654
Canada -- English and French

Components that may be removed and serviced without exchange are identified by an "X" in the
appropriate column of the table below
.
Any repairs involving engine components not identified in the table below
, engine noise concerns,
oil consumption, or relatedsymptoms may require an engine exchange.
Important: Engine block and internal components along with any component in which a cylinder
head has to be removed to perform the repair will require an engine exchange.
Please note that this list is subject to change as the program progresses.
You will be notified by the PQC consultant if additional items are considered serviceable on a
particular engine.

Serviceable Components

3.0L (LM2)

Accessory Drive

X

A/C Compressor

X

Aftertreatement System and Sensors

X

All Cooling System Hoses

X

All Engine Sensors

X

Brackets

X

Camshaft Covers

X

Camshaft Position Sensor

X

Closed-Coupled SCR-F

X

Coolant Outlet Assembly

X

Coolant Pump

X

Coolant Rotary Valve

X

Cooling System RadiatorInlet/Outlet Pipes

X

Crankshaft Dampner

X

Crankshaft Position Sensor

X
X

DEF Injector

Crankshaft Rear Oil Seal

X

EGR Coolers

X

EGR Valves

X

Engine Control Module(ECM)

X

Engine Cover / Beauty Cover

X

Engine Mounts / Transaxle Mounts

X

Engine Wiring Harness

X

Exhaust Manifold / Gasket

X

Flywheel / Flexplate

X

Fuel Injectors

X

Fuel Injector Wiring Harness

X

Fuel Rail

X

Fuel Pipes & HP Fuel Pump Assembly

X

Generator

X

Hi / Lo Pressure Fuel Lines

X

Heater Outlet / Inlet Fittings

X

Intake Air Ducts & Related Components

X

Intake Air Temperature Sensor

X

Intake Manifold

X

Knock Sensors (NOx)

X

Map or Baro Sensor

X

Mass Air Flow Sensor

X

Oil Cooler / Pipes

X

Oil Fill Cap

X

Oil Filter

X

Oil Level Indicator (Dipstick)

X

Oil Pressure Switch

X

Oil Pressure Control Solenoid Valve

X

Oxygen Sensors

X

PCV System / Hose’s

X

Purge Solenoid

X

Secondary Timing Chain Tensioner

X

Starter Motor Assembly

X

Thermostat Housing / Gasket

X

Throttle Body / Related Components

X

Timing Chain Lower Cover

X

Turbo Assembly / POA parts / Brackets / Gaskets

X

Important: Engine repairs or failures that arecaused by components external to the engine do NOT
fall under the exchange program. F
or example, if an engine failure is causedby incorrectly installed
engine coolant lines, the engine assembly (or parts required to complete a repair) must be obtained

from General Motors Customer Care and Aftersales (GMCC&A) through the normal parts ordering
process. The exchange programis created as a way to correct internal concerns and to take what is
learned and find a way to eliminate these concerns. Externalcomponents causing a failure do not
provide any useful information in improving an engine. The engine received from GMCC&A
through
the normal parts ordering process will be a new service engine.
Engine Broadcast Code Location
3.0L Engine Assembly (RPO LM2)
Engine Front Cover

As shown in the above photos, the engine broadcastcode can be found on the engine front.

Procedures:
A thorough diagnosis must be performed on the condition in order to prevent unnecessary
component replacements.
Contact the Product Quality Center (PQC) to verify the proper diagnosis has been performed.
Upon review of the diagnosis, the PQC will establish a case reference number and mak