Bulletin No.: 13079
Date: April, 2013

Program Bulletin

CUSTOMER SATISFACTION PROGRAM
SUBJECT:

Water Pump Shaft Seal Leaks

MODELS:

2009-2013 Buick Enclave
2009-2013 Chevrolet Traverse
2009-2013 GMC Acadia
2009-2010 Saturn Outlook
Equipped with HFV6 Engine (LY7, LLT)
THIS PROGRAM IS IN EFFECT UNTIL APRIL 30, 2015.

CONDITION
Certain 2009-2013 model year Buick Enclave, Chevrolet Traverse, GMC Acadia and 2009-2010
model year Saturn Outlook vehicles equipped with HFV6 Engine (LY7, LLT) may experience
leaks from the water pump shaft seal. These leaks are often due to vehicle operation with a low
engine coolant level. Proper maintenance of the engine coolant level will increase shaft seal
reliability and help ensure that the water pump operates as intended.
CORRECTION
Dealers are to check the engine coolant level and, if necessary, add the proper mixture of
coolant directly to the radiator and the coolant recovery tank.
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
Copyright 2013 General Motors. All Rights Reserved.

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Bulletin No.: 13079

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 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
12346290 - US
10953464 - CN

Description
COOLANT, ENGINE (DEX-COOL)

Quantity/Vehicle
As Needed
(Submit as Net Item)

SERVICE PROCEDURE
1. Open the hood of the vehicle.
Note: The vehicle must be on a level surface when checking the coolant level.
2. Check to see if coolant is visible in the coolant recovery tank.
If the coolant inside the coolant recovery tank is boiling, do not do anything else until it
cools down.
If coolant is visible but the coolant level is not 1 cm (.394 in) above the FULL COLD
mark, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant to the
radiator. Proceed to step 3.
If the coolant level is 1 cm (.394 in) above the FULL COLD mark, proceed to step 3.2 to
determine if the coolant is at the base of the radiator filler neck.
Warning: An electric engine cooling fan under the hood can start up even when the engine is
not running and can cause injury. Keep hands, clothing, and tools away from any underhood
electric fan.
Warning: Steam and scalding liquids from a hot cooling system can blow out and burn you
badly. They are under pressure, and if you turn the surge tank pressure cap—even a little—
they can come out at high speed. Never turn the cap when the cooling system, including the
surge tank pressure cap, is hot. Wait for the cooling system and surge tank pressure cap to
cool if you ever have to turn the pressure cap.
3. Add the proper mixture of coolant directly to the radiator, but be sure the cooling system is
cool before this is done.

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Bulletin No.: 13079

2068632

3.1 Detach the fasteners and lift off the panel that covers the radiator cap.
3.2 Remove the radiator pressure cap when the cooling system, including the upper radiator
hose, is no longer hot. Turn the pressure cap slowly counterclockwise about one full turn.
3.3 Keep turning the pressure cap slowly and remove it.
3.4 Fill the radiator to the base of the filler neck with the proper DEX-COOL coolant mixture.

2068634

3.5 Fill the coolant recovery tank to 1 cm (.394 in) above the FULL COLD mark.
3.6 Reinstall the cap on the coolant recovery tank but leave the radiator pressure cap off.
Note If coolant begins to flow out of the filler neck at any time during this procedure, reinstall
the pressure cap.
3.7 Start the engine and let it run until the upper radiator hose feels warm.
3.8 Determine the coolant level. If the coolant level inside the radiator filler neck is low, add
more of the proper DEXCOOL coolant mixture through the filler neck until the level is
back up to the base of the filler neck.
Caution: If the pressure cap is not tightly installed, coolant loss and possible engine damage
may occur. Be sure the cap is properly and tightly secured.

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3.9 Replace the pressure cap. Be sure to secure it tightly.
3.10 Install the panel that covers the radiator cap.
4. Close the hood of the vehicle.
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
V2806
*

Description
Check Engine Coolant Level (Includes Add Coolant)

Labor Time
0.3

Net Item
*

The amount identified in “Net Item” should represent the actual sum total of the current
dealer net price for the coolant needed to perform the required repairs, plus applicable
Mark-Up or Landed Cost (for Export).

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.

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Bulletin No.: 13079

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 April 30, 2015.
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 April 30, 2015, 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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Bulletin No.: 13079
April 2013

Dear General Motors Customer:
We have learned that certain 2009-2013 model year Buick Enclave, Chevrolet Traverse, GMC
Acadia and 2009-2010 model year Saturn Outlook vehicles equipped with HFV6 engine may
experience leaks from the water pump shaft seal. These leaks are often due to vehicle
operation with a low engine coolant level. Proper maintenance of the engine coolant level will
increase shaft seal reliability and help ensure that the water pump operates as intended.
Your satisfaction with your GM vehicle is very important to us, so we are announcing a program
to prevent this condition.
What We Will Do: Your GM dealer will check your vehicle’s engine coolant level and, if
necessary, add sufficient engine coolant. This service will be performed for you at no charge
until April 30, 2015. 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

Buick
Chevrolet
GMC
Saturn
Guam
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

1-800-521-7300
1-800-222-1020
1-800-462-8782
1-800-553-6000
65-6267-1752
1-800-496-9992
1-800-496-9993
1-800-496-9994

Text Telephones
(TTY)
1-800-832-8425
1-800-833-2438
1-888-889-2438
1-800-833-6000

Courtesy Transportation: If your vehicle is within the New Vehicle Limited Warranty, your
dealer may provide you with shuttle service or some other form of courtesy transportation while
your vehicle is at the dealership for this repair. Please refer to your Owner Manual and your
dealer for details on Courtesy Transportation.
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.
Jim Moloney
General Director,
Customer and Relationship Services
13079