Bulletin No.: 14284
Date: November 2014

Program Bulletin

CUSTOMER SATISFACTION PROGRAM
SUBJECT:

Upfitter Auxiliary Switches

MODELS:

2014 Chevrolet Silverado 1500
2015 Chevrolet Silverado
2014 GMC Sierra 1500
2015 GMC Sierra
Equipped with Auxiliary Switch Bank (RPO 9L7)

THIS PROGRAM IS IN EFFECT UNTIL DECEMBER 31, 2016.
CONDITION
Certain 2014 and 2015 model year Chevrolet Silverado and GMC Sierra vehicles equipped with
the Auxiliary Switch Bank (RPO 9L7) may have an electrical issue created when one or both
Upfitter fuses used for the instrument panel mounted auxiliary switch bank are moved from the
battery feed to the ignition feed position. If the fuse positions are altered, the engine could continue
to run after the ignition switch is turned off. There could also be an inadvertent glowing of the
auxiliary switch indicators, additional parasitic current drain, or a no start condition.
CORRECTION
Dealers are to replace the Underhood Electrical Center.
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.
Copyright 2014 General Motors. All Rights Reserved.

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November 2014

Bulletin No.: 14284

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
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
Parts required to complete this program are to be obtained from General Motors Customer Care
and Aftersales (GMCC&A). Please refer to your “involved vehicles listing” before ordering parts.
Normal orders should be placed on a DRO = Daily Replenishment Order. In an emergency
situation, parts should be ordered on a CSO = Customer Special Order.
Part Number
23280309

Description
BLOCK ASM, ENG WRG HARN JUNC

Quantity/Vehicle
1

SERVICE PROCEDURE

3963531

1. Remove the underhood electrical center (1). Refer to Underhood Electrical Center or
Junction Block Replacement in SI.
2. Install the new underhood electrical center. Refer to Underhood Electrical Center or
Junction Block Replacement in SI.
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
9101115

Description
Underhood Electrical Center Replacement

Labor
Time
0.3

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November 2014

Bulletin No.: 14284

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).
DEALER PROGRAM RESPONSIBILITY
All unsold new vehicles in dealers' possession and subject to this program must be held and
inspected/repaired per the service procedure of this program bulletin before customers take
possession of these vehicles.
Dealers are to service all vehicles subject to this program at no charge to customers, regardless
of mileage, age of vehicle, or ownership, through December 31, 2016.
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
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 December 31, 2016 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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November 2014

Bulletin No.: 14284
December 2014

Dear General Motors Customer:
We have learned that your 2014 or 2015 model year Chevrolet Silverado or GMC Sierra may
have been built with an electrical issue created when one or both Upfitter fuses used for the
instrument panel mounted auxiliary switch bank are moved from the battery feed to the ignition
feed position. If the fuse positions are altered, the engine could continue to run after the ignition
switch is turned off. There could also be an inadvertent glowing of the auxiliary switch indicators,
additional parasitic current drain, or a no start condition
Your satisfaction with your 2014 or 2015 model year Chevrolet Silverado or GMC Sierra is very
important to us, so we are announcing a program to prevent this condition or, if it has occurred,
to fix it.
What We Will Do: Your Chevrolet or GMC dealer will replace the underhood electrical center.
This service will be performed for you at no charge until December 31, 2016. 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. By scheduling an
appointment, your dealer can ensure that the necessary parts will be available on your
scheduled appointment date
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
Guam
Puerto Rico – English
Puerto Rico – Español
Virgin Islands
GM Medium Duty Truck

1-800-222-1020
1-800-462-8782
65-6267-1752
1-800-496-9992
1-800-496-9993
1-800-496-9994
1-800-862-4389

Text Telephones
(TTY)
1-800-833-2438
1-888-889-2438

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.
Alicia S. Boler-Davis
Sr. Vice President
Global Quality & Customer Experience
14284