EMISSION RECALL
IMPCO AUTOMOTIVE
Bulletin Number: 13102
Date: April 2013
SUBJECT:

Electronic Control Unit (ECU) Calibration

MODELS:

2013 Chevrolet Express and GMC Savana
Compressed Natural Gas (CNG) Vehicles

IMPCO Automotive is conducting this emission recall. For the convenience of our customers,
General Motors has agreed to assist in administering this recall through its Chevrolet and
GMC dealers.
DEFECT INVOLVED
IMPCO Automotive has decided to conduct a Voluntary Emission Recall involving certain
2013 model year Chevrolet Express and GMC Savana compressed natural gas (CNG)
vehicles. These vehicles were built with an incorrect ECM calibration that, under some
conditions, may cause higher tailpipe exhaust emissions than allowed by the applicable
emission standards.
SERVICE ACTION REQUIRED
Dealers are to reprogram the engine control module (ECM). The change to the catalyst
temperature model will allow the vehicle to operate as originally designed.
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 dealers through the GM GlobalConnect Recall Reports. 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
follow-up necessary to complete this recall.
PART INFORMATION
No parts are required for this recall.
Copyright 2013 General Motors. All Rights Reserved.

Page 2

April 2013

Bulletin No.: 13102

SERVICE PROCEDURE
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. When using a MDI for
reprogramming, ensure that is updated with the latest software version. Use TIS2WEB on or
after 04/30/13 to obtain the calibration. If you cannot access the calibration, call the Techline
Customer Support Center and it will be provided.
For step-by-step programming instructions, please refer to SI and the Techline Information
System (TIS) terminal.
1.

Verify that there is a battery charge of 12 to 15 volts. The battery must be able to
maintain a charge during programming. Only use an approved Midtronics® PSC 550
Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent to maintain
proper battery voltage during programming.

2.

Reprogram the engine control module (ECM). Refer to SI and Service Programming
System (SPS) documentation for programming instructions.
2.1 Connect the MDI to the vehicle.
2.2 Select J2534 MDI and Reprogram ECU from the Select Diagnostic Tool and
Programming Process screen.
2.3 Select ECM Engine Control Module from the Supported Controllers screen.
2.4 Follow the on-screen instructions.

3.

Clear all diagnostic trouble codes (DTCs).

4.

Start the vehicle and confirm that there are no messages on the driver information center
display or any telltales illuminated.

5.

California, Connecticut, Maryland, Massachusetts, Maine, Oregon, Vermont, &
Washington vehicles only: Install a Recall Identification Label. Also, for California
vehicles complete a “Proof of Correction” certificate upon recall completion.
RECALL IDENTIFICATION LABEL

For California, Connecticut, Maryland, Massachusetts, Maine, Oregon, Vermont, and
Washington Vehicles Only - Place a Recall Identification Label on each vehicle corrected in
accordance with the instructions outlined in this Product Recall Bulletin. Each label
provides a space to include the recall number and the five-digit dealer code of the dealer
performing the recall service. This information may be inserted with a ballpoint pen.
Put the Recall Identification Label on a clean and dry surface of the
radiator core support in an area that will be visible to people servicing the
vehicle.
When installing the Recall Identification Label, be sure to pull the tab to
allow adhesion of the clear protective covering. Additional Recall
Identification Labels for US dealers can be obtained from Dealer Support
Materials
by
ordering
on
the
web
from
DWD
Store,
www.gmglobalconnect.com, and then click on the DWD Store link.
Request Item Number S-1015 when ordering.

GM
RECALL

13102
COMPLETED
DEALER CODE

ED
99-999

DO NOT REMOVE

Page 3

April 2013

Bulletin No.: 13102

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
V2808

Description
Reprogram ECM

Labor
Time
0.4

CUSTOMER NOTIFICATION
General Motors will notify customers of this recall on their vehicle (see copy of customer letter
included with this bulletin).
In order to ensure full protection under the emission warranty, and the right to participate in
future recalls, the customer notification letter recommends that customers have their vehicles
serviced as soon as possible. It also advises that failure to do so could legally be determined
to be lack of proper maintenance. The vehicle may fail a state or local emission inspection
test if the recall work is not completed.
DEALER RECALL RESPONSIBILITY
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.
When a California emissions recall is completed by a GM dealer, the dealer must provide the
vehicle owner a “Proof of Correction Certificate” which the owner may need to present to the
California Department Of Motor Vehicles (DMV) when renewing their vehicle registration.
Without this correction certificate, the owner may be unable to renew their vehicle registration.
Additional Certificates can be obtained, at no charge, from Dealer Support Materials by
ordering on the web from the DWD Store, www.gmdealerworld.com, and then click on the
DWD Store link; request GM Item Number 1825 when ordering.

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

Page 4

April 2013

Bulletin No.: 13102
May 2013

Dear General Motors Customer:
This notice is sent to inform you that IMPCO Automotive is conducting a voluntary emission
recall that includes your vehicle.
Although IMPCO Automotive is conducting the recall, for your convenience, General Motors is
assisting IMPCO by making our dealer network available to perform the recall.
Reason For This Recall: IMPCO Automotive has decided to conduct a voluntary emission
recall involving certain 2013 model year Chevrolet Express and GMC Savana compressed
natural gas (CNG) vehicles. These vehicles were built with an incorrect ECM calibration that,
under some conditions, may cause higher tailpipe exhaust emissions than allowed by the
applicable emission standards.
What Will Be Done: Your GM dealer will reprogram the electronic control module. This
service will be performed for you at no charge.
What You Should Do: Please contact your GM dealer as soon as possible to arrange a
service date. Instructions for making this correction have been sent to your dealer. Please
ask your dealer if you wish to know how much time will be needed to schedule, process, and
repair your vehicle.
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

Emission Law Information: In order to ensure your full protection under the emission
warranty made applicable to your vehicle by state and federal law, and your right to participate
in future recalls, it is recommended that you have your vehicle serviced as soon as possible.
Failure to do so could legally be determined to be lack of proper maintenance of your vehicle.
Also, your vehicle may fail a state or local emission inspection if this recall is not
accomplished.
IMPORTANT MESSAGE FOR CALIFORNIA RESIDENTS
The California Air Resources Board (CARB) requires vehicle emission recalls be completed
prior to California registration renewal. Uncorrected emission recalls will result in the inability
to renew your California vehicle registration.
At the time of emission recall completion, your California dealer will issue a "Proof of
Correction Certificate". Keep this certificate and, if required, present it to the Department of
Motor Vehicles when renewing your California registration as proof of recall completion.

Page 5

April 2013

Bulletin No.: 13102

We are sorry to cause you this inconvenience; however, we have taken this action in the
interest of your continued satisfaction with our products.
Jim Moloney
General Director,
Customer and Relationship Services
13102