14192

Bulletin No.: 14192
Date: June 2014
Recall Bulletin
PRODUCT SAFETY RECALL
SUBJECT:
Unwanted Transfer Case Shift to Neutral
MODELS:
2014 Chevrolet Silverado 1500
2014 GMC Sierra 1500
2015 Chevrolet Silverado, Suburban, Tahoe
2015 GMC Sierra, Yukon, Yukon XL
Equipped with Automatic Transfer Case (RPO NQH)
It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item
of motor vehicle equipment (including a tire) covered by this notification under a sale or lease
until the defect or noncompliance is remedied.
All involved vehicles that are in dealer inventory must be held and not delivered to customers,
dealer traded, or used for demonstration purposes until the repair contained in this bulletin has
been performed on the vehicle.
CONDITION
General Motors has decided that a defect which relates to motor vehicle safety exists in certain
2014 model year Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles, and 2015 model
year Chevrolet Silverado, Suburban and Tahoe and GMC Sierra, Yukon and Yukon XL vehicles
equipped with Automatic Transfer Case (Option Code NQH). Some of these vehicles have a
condition in which an electric signal short may cause the active transfer case to switch to neutral
without operator input. The transfer case mode selection knob would still indicate the last
selected drive mode, and the driver will not have any feedback that the transfer case is in neutral.
If the transfer case switches to neutral while the vehicle is in motion, the customer would
experience loss of motive power, which could increase the risk of a crash. If the vehicle is
parked, the vehicle could exhibit unintended motion if the parking brake is not set, which could
also increase the risk of a crash.
CORRECTION
Dealers are to reprogram the Transfer Case Control Module.
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
Copyright 2014 General Motors. All Rights Reserved.
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June 2014
Bulletin No.: 14192
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 necessary to complete this recall is a violation of law in several
states/provinces/countries. Accordingly, you are urged to limit the use of this report to the followup necessary to complete this recall.
PART INFORMATION
No parts are required.
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. If you cannot
access the calibration, call the Techline Customer Support Center and it will be provided.

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.
For reference, the Range/Mode switch on the instrument panel of vehicles equipped with
an NQH transfer case have 5 positions for the switch (2HI / AUTO / 4HI / 4LO /Neutral).
Only vehicles with an NQH transfer case have all 5 switch positions.
Refer to Transfer Case Shift Control Module Programming and Setup (NQH) for additional
information on programming the transfer case shift control module.
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June 2014
Bulletin No.: 14192
1. Install EL-49642 SPS programming support tool.
2. Access the Service Programming System (SPS) and follow the on-screen instructions.
3. On the SPS Supported Controllers screen, select K69 Transfer Case Control Module –
Programming and follow the on-screen instructions.
4. On the SPS Supported Controllers screen, select K69 Transfer Case Control Module –
Setup and follow the on-screen instructions.
5. At the end of programming, choose the “Clear All DTCs” function on the SPS screen.
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
9100680
Description
Transfer Case Shift Control Module Reprogramming with
SPS
Labor
Time
0.4
CUSTOMER NOTIFICATION – For US and Canada
General Motors will notify customers of this recall on their vehicle.
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 RECALL RESPONSIBILITY – For US and Export (US States, Territories,
and Possessions)
It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item
of motor vehicle equipment (including a tire) covered by this notification under a sale or lease
until the defect or noncompliance is remedied.
The US National Traffic and Motor Vehicle Safety Act provides that each vehicle that is subject
to a recall of this type must be adequately repaired within a reasonable time after the customer
has tendered it for repair. A failure to repair within sixty days after tender of a vehicle is prima
facie evidence of failure to repair within a reasonable time. If the condition is not adequately
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Bulletin No.: 14192
repaired within a reasonable time, the customer may be entitled to an identical or reasonably
equivalent vehicle at no charge or to a refund of the purchase price less a reasonable allowance
for depreciation. To avoid having to provide these burdensome remedies, every effort must be
made to promptly schedule an appointment with each customer and to repair their vehicle as
soon as possible. In the recall notification letters, customers are told how to contact the US
National Highway Traffic Safety Administration if the recall is not completed within a reasonable
time.
DEALER RECALL RESPONSIBILITY – All
All unsold new vehicles in dealers' possession and subject to this recall must be held and
inspected/repaired per the service procedure of this recall bulletin before customers take
possession of these vehicles.
Dealers are to service all vehicles subject to this recall at no charge to customers, regardless of
mileage, age of vehicle, or ownership, from this time forward.
Customers who have recently purchased vehicles sold from your vehicle inventory, and for which
there is no customer information indicated on the dealer 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. Recall 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 recall enters your vehicle inventory, or is in your
dealership for service in the future, you must take the steps necessary to be sure the recall
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.
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