Bulletin No.: 13386
Date: January 2015

Service Bulletin

SPECIAL COVERAGE
SUBJECT:

Special Coverage Adjustment – Nitrogen Oxide (NOx) Sensor

MODELS:

2010-2011 Chevrolet Express and GMC Savana
Equipped with 6.6L Diesel Engine (RPO LGH)
2011 Chevrolet Silverado and GMC Sierra 2500/3500
Equipped with 6.6L Diesel Engine (RPO LML/LGH)

CONDITION
On some 2010-2011 model year Chevrolet Express and GMC Savana vehicles equipped with a
6.6L diesel engine (RPO LGH) and 2011 model year Chevrolet Silverado and GMC Sierra
2500/3500 series vehicles equipped with a 6.6L diesel engine (RPO LML/LGH), the nitrogen oxide
(NOx) sensor may fail due to contamination between the terminals in the sensor and the wire
interface. The contamination may cause the NOx sensor signal to become unstable and/or oscillate
which may cause a malfunction indicator light to illuminate.
SPECIAL COVERAGE ADJUSTMENT
This special coverage covers the condition described above for a period of 10 years or 120,000
miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service,
regardless of ownership.
Dealers are to replace the NOx sensor. The repairs will be made at no charge to the customer.
For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after
January 7, 2015 are covered by this special coverage and must be submitted using the labor
operation codes provided with this bulletin. Claims with repair orders prior to January 7, 2015 must
be submitted to the Service Contract provider.
VEHICLES INVOLVED
All involved vehicles are identified by Vehicle Identification Number on the Applicable Warranties
section 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.
Copyright 2015 General Motors. All Rights Reserved.

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January 2015

Bulletin No.: 13386

PART INFORMATION
Parts required to complete this special coverage are to be obtained from General Motors Customer
Care and Aftersales (GMCCA).
Part Number
19256343
19256344

Description
NOx Sensor Kit – Position 1
NOx Sensor Kit –Position 2

Quantity/Vehicle
1
1

SERVICE PROCEDURE
1. Determine if the nitrogen oxide sensors in position 1 and position 2 require replacement by using
the appropriate diagnostic information in SI.


If the nitrogen oxide sensors do NOT require replacement, no further action is required.
Inform the customer that any additional diagnosis and repairs are not covered under this
special coverage.

4000071

Note: If diagnosis indicates that only one nitrogen oxide sensor requires replacement, inspect the
date code of the other nitrogen oxide sensor to determine if it requires replacement. The date code
(1) is located on the back side of the NOx sensor module. The first six digits of the code represent
the date code. Refer to the photograph. The example in the photograph has a date code of
131103xxxx, which indicates a November 03, 2013 date code. All NOx sensors with a date code
prior to 120914xxxx (September 14, 2012) should be discarded and replaced with a new sensor.


If the nitrogen oxide sensors require replacement, proceed to step 2.

2. Remove the nitrogen oxide sensors in position 1 and 2. Refer to Nitrogen Oxide Sensor
Replacement --- Position 1 and Nitrogen Oxide Sensor Replacement --- Position 2 in SI.
3. Install new nitrogen oxide sensors in position 1 and 2. Refer to Nitrogen Oxide Sensor
Replacement --- Position 1 and Nitrogen Oxide Sensor Replacement --- Position 2 in SI.

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January 2015

Bulletin No.: 13386

CUSTOMER REIMBURSEMENT - For U.S.
Customer requests for reimbursement of previously paid repairs to correct the condition described
in this bulletin are to be submitted to the dealer by January 31, 2016, unless otherwise specified by
state law. If this is not convenient for the customer, they may mail the completed Customer
Reimbursement Request Form and all required documents to the GM Customer Assistance Center.
Repairs must have occurred within the 10 years of the date the vehicle was originally placed in
service, or 120,000 miles, whichever occurs first.
All reasonable and customary costs to correct the condition described in this bulletin should
be considered for reimbursement. Any questions or concerns should be reviewed with your
GM representative prior to processing the request.
When a customer requests reimbursement, they must provide the following:




A completed Customer Reimbursement Request Form. This form is mailed to the customer
or can be obtained through GM GlobalConnect.
The name and address of the person who paid for the repair.
Paid receipt confirming the amount of the repair expense, a description of the repair, and
the person or entity performing the repair.

IMPORTANT: GM requires dealers to approve or deny a reimbursement request within 30 days of
receipt. If a reimbursement request is approved, the dealer should immediately issue a check to
the customer and submit an appropriate warranty transaction for the incurred expense. If a
reimbursement request is denied, the dealer MUST provide the customer with a clear and concise
explanation, in writing, as to why the request was denied. The bottom portion of the Customer
Reimbursement Request Form may be used for this purpose. If the denial was due to missing
documents, the customer can resubmit the request when the missing documents are obtained, as
long as it is still within the allowed reimbursement period.
Warranty transactions for customer reimbursement of previously paid repairs are to be submitted
as required by GM Global Warranty Management. Additional information can also be found in
Warranty Administration Bulletin 11-00-89-004.
CUSTOMER REIMBURSEMENT - For Canada and Export
Customer requests for reimbursement of previously paid repairs to correct the condition described
in this bulletin are to be submitted to the dealer prior to or by January 31, 2016. Repairs must have
occurred within the 10 years of the date the vehicle was originally placed in service, or 193,000
kilometers, whichever occurs first.
When a customer requests reimbursement, they must provide the following:
-

Proof of ownership at time of repair.
Original paid receipt confirming the amount of unreimbursed repair expense(s) (including
Service Contract deductibles), a description of the repair, and the person or entity performing
the repair.

All reasonable and customary costs to correct the condition described in this bulletin should be
considered for reimbursement. Any questions or concerns should be reviewed with your GM
representative prior to processing the request.

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January 2015

Bulletin No.: 13386

COURTESY TRANSPORTATION – For U.S. 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 ZREG
transaction type, unless noted otherwise.
Note: To avoid having to "H" route the customer reimbursement transaction for approval, it must
be submitted prior to the repair transaction.
Labor
Code
9900094
9900095

9900096
9900097


Description
Position 1 and 2 Nitrogen Oxide Sensor Inspection – No Further
Action Required
Position 1 and 2 Nitrogen Oxide Sensor Replacement (Includes
Inspection Time)
- Chevrolet Express and GMC Savana
- Chevrolet Silverado and GMC Sierra
Customer Reimbursement Approved
Customer Reimbursement Denied - For U.S. dealers only

Labor
Time
0.3

Net
Item
N/A

2.3
1.7
0.2
0.1

N/A
N/A
*
N/A

The amount identified in “Net Item” should represent the dollar amount reimbursed to the
customer.

CUSTOMER NOTIFICATION
General Motors will notify customers of this special coverage on their vehicles (see copy of typical
customer letter included with this bulletin - actual letter may vary slightly).

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/retailer for information on
whether your vehicle may benefit from the information.

We Support
Voluntary Technician
Certification

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January 2015

Bulletin No.: 13386
January 2015

Dear General Motors Customer:
As the owner of a 2010-2011 model year Chevrolet Express or GMC Savana vehicle equipped
with a 6.6L diesel engine or a 2011 model year Chevrolet Silverado or GMC Sierra 2500/3500
series vehicle equipped with a 6.6L diesel engine, your satisfaction with our product is very
important to us.
This letter is intended to make you aware that some of these vehicles may have a condition where
the nitrogen oxide (NOx) sensor may fail due to contamination between the terminals in the
sensor and the wire interface. This contamination may interfere with the operation of the NOx
sensor signal and cause a malfunction indicator light to illuminate.
Do not take your vehicle to your GM dealer as a result of this letter unless you believe that
your vehicle has the condition as described above.
What We Have Done: General Motors is providing owners with additional protection for the
condition described above. If this condition occurs on your 2010-2011 model year Chevrolet
Express or GMC Savana vehicle or your 2011 model year Chevrolet Silverado or GMC Sierra
2500/3500 series vehicle within 10 years of the date your vehicle was originally placed in service
or 120,000 miles (193,000 km), whichever occurs first, the condition will be repaired for you at no
charge. Diagnosis or repair for conditions other than the condition described above is not
covered under this special coverage program.
What You Should Do: If you believe that your vehicle has the condition described above, repairs
and adjustments qualifying under this special coverage must be performed by a General Motors
dealer. You may want to contact your GM dealer to find out how long they will need to have your
vehicle so that you may schedule the appointment at a time that is convenient for you. This will
also allow your dealer to order parts if they are not already in stock. Keep this letter with your
other important glove box literature for future reference.
Reimbursement: If you have paid for repairs for the condition described in this letter, please
complete the enclosed reimbursement form and present it to your dealer with all required
documents. Working with your dealer will expedite your request, however, if this is not
convenient, you may mail the completed reimbursement form and all required documents to
Reimbursement Department, PO Box 33170, Detroit, MI 48232-5170. The completed form and
required documents must be presented to your dealer or received by the Reimbursement
Department by January 31, 2016, unless state law specifies a longer reimbursement period.
If you have any questions or need any assistance, just contact your dealer or the appropriate
Customer Assistance Center at the number listed below.
Division

Number

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

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

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

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January 2015

Bulletin No.: 13386

We are sorry for any inconvenience you may experience; however, we have taken this action in the
interest of your continued satisfaction with our products.
Alicia S. Boler-Davis
Sr. Vice President
Global Quality & Customer Experience
Enclosure
13386

GM CUSTOMER CARE AND AFTERSALES
DCS3491
URGENT - DISTRIBUTE IMMEDIATELY
Date:

January 7, 2014

Subject:

13386 – Special Coverage Adjustment
Nitrogen Oxide (NOx) Sensor

Models:

2010-2011 Chevrolet Express and GMC Savana
Equipped with 6.6L Diesel Engine (RPO LGH)
2011 Chevrolet Silverado and GMC Sierra 2500/3500
Equipped with 6.6L Diesel Engine (RPO LML/LGH)

To:

All Chevrolet and GMC Dealers

Attention: General Manager, Service Advisor, Service Manager, Parts and
Service Director, Parts Manager, Used Vehicle Sales Manager,
and Warranty Administrator
General Motors is releasing Special Coverage Adjustment 13386 today. The
total number of U.S. vehicles involved is approximately 87,000. Please see the
attached bulletin for details.
Customer Letter Mailing
The customer letter mailing will begin on January 21, 2015.
Global Warranty Management (GWM)
The Investigate Vehicle History screen in GWM will be updated January 8, 2015.
Campaign Initiation Detail Report (CIDR)
The CIDR is not available for Special Coverage Adjustments.
END OF MESSAGE
GM CUSTOMER CARE AND AFTERSALES