NHTSA ID Number: 10199256
Manufacturer Communication Number: 21NA025
TSB/Document Date: 2021-07-19
Summary
This technical bulletin provides a procedure to replace the Fuel Power Module if found the cause of the customers concern.
Service Bulletin
Bulletin No.:
21-NA-025
Date:
June, 2021
TECHNICAL
Subject:
Loss of Power, Stalling Malfunction Indicator Lamp (MIL) Illuminated - DTC P129F Set
Model Year:
Brand:
Model:
Silverado 2500/3500
Sierra
Sierra 2500/3500
VIN:
from
to
2019
2020
from
to
Engine:
L5P
Involved Region or Country
North America, Middle East, Israel, Palestine
Condition
Some customers may comment on one or more of the following conditions:
• Loss of power
• Stalling
• MIL illuminated
Some technicians may find DTC P129F (Fuel Pump Driver Control Module Fuel Pump
Speed Signal Incorrect) set in the Engine Control Module (ECM).
Cause
This condition may be caused by an issue with the Fuel Pump Power Control Module.
Correction
Replace the Fuel Pump Power Control Module.
Service Procedure
Refer to Fuel Pump Power Control Module
Replacement in SI.
Parts Information
Causal
Part
Description
Part
Number
Qty
X
MODULE, .F/
PUMP
PWR CONT
13540018
1
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
4022020
Fuel Pump Power Control Module Replacement
Use the Published Labor
Operations Time
Version
1
Modified
Released May 27, 2021
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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LLC. All Rights Reserved.
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TSB/Document ID: 21NA025
Replacement Service Bulletin Number:
MFR Communication Date: 2021-05-27
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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