Bulletin No.: 15801
Date: April 2016

Program Bulletin
CUSTOMER SATISFACTION PROGRAM
SUBJECT:

Emergency Vehicle Reduced Power

MODELS:

2010-2016 Chevrolet Express
2011-2013 Chevrolet Silverado HD
2015-2016 Chevrolet Silverado HD
2010-2016 GMC Savana
2011-2012 GMC Sierra HD
2015 GMC Sierra HD
Equipped with Duramax Diesel Engine (RPO LGH or LML) and Ambulance
Upfitter or Fire Truck Upfitter (RPO YF2 or ANM)
THIS PROGRAM IS IN EFFECT UNTIL April 30, 2018.

CONDITION
Certain 2010-2016 model year Chevrolet Express, GMC Savana, 2011-2013 model year
Chevrolet Silverado HD, 2015-2016 model year Chevrolet Silverado HD, 2011-2012 model year
GMC Sierra HD, 2015 model year GMC Sierra HD vehicles equipped with Duramax diesel engine
(RPO LGH or LML) and Ambulance Upfitter or Fire Truck Upfitter (RPO YF2 or ANM), may have
a condition in which the emission control system as designed will limit speed under certain
conditions. The EPA has approved General Motor’s request to remove the emission control
system speed limitations on these emergency vehicles where applicable.
CORRECTION
Dealers are to reprogram the engine control module (ECM) with new calibration for emergency
vehicles, which will remove the emission control system speed limitations, and also provide an
earlier warning for diesel particulate filter (DPF) regeneration.
VEHICLES INVOLVED
All involved vehicles are identified by Vehicle Identification Number on the Investigate Vehicle
History screen in GM Global Warranty Management system. Dealership service personnel should
always check this site to confirm vehicle involvement prior to beginning any required inspections
and/or repairs. It is important to routinely use this tool to verify eligibility because not all similar
vehicles may be involved regardless of description or option content.
For dealers with involved vehicles, a listing with involved vehicles containing the complete vehicle
identification number, customer name, and address information has been prepared and will be
provided to US and Canadian dealers through the GM GlobalConnect Recall Reports, or sent
directly to export dealers. Dealers will not have a report available if they have no involved vehicles
currently assigned.
The listing may contain customer names and addresses obtained from Motor Vehicle Registration
Records. The use of such motor vehicle registration data for any purpose other than follow-up
Copyright 2016 General Motors. All Rights Reserved.

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April 2016

Bulletin No.: 15801

necessary to complete this program is a violation of law in several states/provinces/countries.
Accordingly, you are urged to limit the use of this report to the follow-up necessary to complete
this program.
PART INFORMATION
No parts are required for this procedure.
SERVICE PROCEDURE
Note: Carefully read and follow the instructions below.
 Do NOT attempt to order the calibration number from GM Customer Care and Aftersales.
The calibration numbers required for this service procedure are programmed into control
modules via a Multiple Diagnostic Interface (MDI) with the calibration update.
 Do NOT program a control module unless directed to by a service procedure or a service
bulletin. If the control module is not properly configured with the correct calibration software,
the control module will not control all of the vehicle features properly.
 Ensure the programming tool is equipped with the latest software and is securely connected
to the data link connector. If there is an interruption during programming, programming
failure or control module damage may occur.
 Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage
or loss of voltage will interrupt programming. When required, install the EL-49642 SPS
Programming Support Tool to maintain system voltage. If not available, connect a fully
charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT
connect a battery charger.
 Turn OFF or disable systems that may put a load on the vehicles battery such as; interior
lights, exterior lights (including daytime running lights), HVAC, radio, etc.
 During the programming procedure, follow the SPS prompts for the correct ignition switch
position.
 Clear DTCs after programming is complete. Clearing powertrain DTCs will set the
Inspection/Maintenance (I/M) system status indicators to NO.
 Prior to programming, record the engine oil life percentage remaining.
1.

Reprogram the K20 Engine Control Module. Refer to K20 Engine Control Module:
Programming and Setup (LGH), K20 Engine Control Module: Programming and Setup (LGH
or LML), or K20 Engine Control Module: Programming and Setup.

2.

If you cannot access the calibration, call the Techline Customer Support Center and it will be
provided.

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April 2016

Bulletin No.: 15801

COURTESY TRANSPORTATION – For US and Canada
The General Motors Courtesy Transportation program is intended to minimize customer
inconvenience when a vehicle requires a repair that is covered by the New Vehicle Limited
Warranties. The availability of courtesy transportation to customers whose vehicles are within the
warranty coverage period and involved in a product program is very important in maintaining
customer satisfaction. Dealers are to ensure that these customers understand that shuttle service
or some other form of courtesy transportation is available and will be provided at no charge.
Dealers should refer to the General Motors Service Policies and Procedures Manual for Courtesy
Transportation guidelines.
WARRANTY TRANSACTION INFORMATION
Submit a transaction using the table below. All transactions should be submitted as a ZFAT
transaction type, unless noted otherwise.
Labor
Code
9102015

Description
Engine Control Module Reprogramming with SPS:
2010-2013 Express/Savana
2011-2016 Silverado/Sierra, 2014-2016 Express/Savana

Labor Time
0.4
0.3

CUSTOMER NOTIFICATION – For US and Canada
General Motors will notify customers of this program on their vehicle (see copy of customer letter
included with this bulletin).
CUSTOMER NOTIFICATION – For Export
Letters will be sent to known owners of record located within areas covered by the US National
Traffic and Motor Vehicle Safety Act. For owners outside these areas, dealers should notify
customers using the attached sample letter.
DEALER PROGRAM RESPONSIBILITY
All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in
dealers' possession and subject to this recall must be held and inspected/repaired per the service
procedure of this bulletin before customers take possession of these vehicles. Involved vehicles
must be held and not delivered to customers, dealer-traded, released to auction, used for
demonstration, or any other purpose.
All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned
Inventory System (CPOIS) will be de-certified and must be held and remedied per the service
procedure in this bulletin. Upon submitting an accepted/paid warranty transaction in the Global
Warranty Management (GWM) system, the vehicle can be re-certified for sale within the CPOIS
system, or once again be used in the CTP program.
Dealers are to service all vehicles subject to this program at no charge to customers, regardless
of mileage, age of vehicle, or ownership, through April 30, 2018.
Customers who have recently purchased vehicles sold from your vehicle inventory, and for which
there is no customer information indicated on the involved vehicle listing, are to be contacted by
the dealer. Arrangements are to be made to make the required correction according to the
instructions contained in this bulletin. A copy of the customer letter is provided in this bulletin for

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Bulletin No.: 15801

your use in contacting customers. Program follow-up cards should not be used for this purpose,
since the customer may not as yet have received the notification letter.
In summary, whenever a vehicle subject to this program enters your vehicle inventory, or is in your
facility for service through April 30, 2018, you must take the steps necessary to be sure the
program correction has been made before selling or releasing the vehicle.

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 tools,
equipment, 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 dealer for information on whether your vehicle may benefit from the information.

We Support
Voluntary Technician
Certification

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April 2016

Bulletin No.: 15801
April 2016

This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that your 2010-2016 model year Chevrolet Express, GMC Savana, 2011-2013
model year Chevrolet Silverado HD, 2015-2016 model year Chevrolet Silverado HD, 2011-2012
model year GMC Sierra HD, or 2015 model year GMC Sierra HD vehicle, equipped with a
Duramax diesel engine and Ambulance Upfitter or Fire Truck Upfitter, may have a condition in
which the emission control system as designed will limit speed under certain conditions. The EPA
has approved General Motor’s request to remove the emission control system speed limitations
on these emergency vehicles where applicable.
Your satisfaction with your vehicle is very important to us, so we are announcing a program to
correct this condition.
What We Will Do: Your GM dealer will reprogram the engine control module (ECM) with a new
calibration for emergency vehicles, which will remove the emission control system speed
limitations, and also provide an earlier warning for diesel particulate filter (DPF) regeneration. This
service will be performed for you at no charge until April 30, 2018. After that, any applicable
warranty will apply.
What You Should Do: To limit any possible inconvenience, we recommend that you contact
your dealer as soon as possible to schedule an appointment for this repair.
If you have any questions or concerns that your dealer is unable to resolve, please contact the
appropriate Customer Assistance Center at the number listed below.
Division

Number

Chevrolet
GMC
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

1-800-630-2438
1-866-996-9463
1-800-496-9992
1-800-496-9993
1-800-496-9994

Text Telephones
(TTY)
1-800-833-2438
1-800-462-8583

We sincerely regret any inconvenience or concern that this situation may cause you. We want
you to know that we will do our best, throughout your ownership experience, to ensure that your
GM vehicle provides you many miles of enjoyable driving.
Terry M. Inch
Executive Director
Global Connected Customer Experience
15801