NHTSA ID Number: 10040503
Manufacturer Communication Number: SB-11001
Summary
GM SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE FUEL INJECTION SYSTEM MAY NOT OPERATE AS INTENDED. IF THIS OCCURS THE MALFUNCTION LIGHT MAY ILLUMINATE, AND VEHICLE SPEED COULD BE LIMITED. *RM UPDATED 10/4/11.
6 Affected Products
Vehicles
SEOCONTENT-START
| Subject: | Diesel Exhaust Fluid Calibration Enhancement |
| Models: | 2010-2011 Chevrolet Express |
| 2011 Chevrolet Silverado HD |
|
| 2010-2011 GMC Savana | |
| 2011 GMC Sierra HD | |
| With a 6.6L Turbo Duramax Diesel Engine (LML/LGH) |
11001
General Motors has decided to conduct a Voluntary Emission Recall involving certain 2010-2011 model year Chevrolet Express, GMC Savana; 2011 model year Chevrolet Silverado HD and GMC Sierra HD vehicles equipped with a 6.6L Turbo Duramax Diesel Engine (LML/LGH).
The Diesel Exhaust Fluid (DEF) injection system may not operate as intended. If this occurs the Malfunction Indicator Lamp may illuminate, a DEF system warning may be displayed in the Driver Information Center, and vehicle speed could be limited.
Correction
Dealers are to reprogram the engine control module.
Parts Information
No parts are required for this recall.
Service Procedure
Note: If a customer comments about a diesel exhaust fluid (DEF) low or speed limited soon latched message that currently will not clear or the DEF low or speed limited soon latch message appears soon after programming the engine control module (ECM), refer to the most current version of “Exhaust Fluid Low – Exhaust Fluid Empty – Exhaust Fluid Range And Service Exhaust Fluid Messages Difficult To Reset – Including Cold Weather Operation” in Service Information.
Engine Control Module Programming
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) or Tech2 and TIS2WEB with the calibration update. When using a MDI or Tech2 for reprogramming, ensure that it is updated with the latest software version. Use TIS2WEB on or after 07/18/11 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 Service Information and the Techline Information System (TIS) terminal.
- 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.
- Reprogram the engine control module (ECM). Refer to Service Information and Service Programming System (SPS) documentation for programming instructions.
2.1 Connect the MDI or Tech2 to the vehicle. If using MDI, connect to programming terminal with a cable (USB or LAN).
2.2 Select J2534 MDI or J2534 Tech2 and Reprogram ECU from the Select Diagnostic Tool and Programming Process screen.
2.3 Select ECM Engine Control Module—Programming from the Supported Controllers screen,
2.4 Follow the on-screen instructions.
- Clear all DTCs.
Note: If a programming failure occurs, refer to Engine Control Module Recovery Steps in this bulletin.
Engine Control Module Recovery Steps
- Disconnect the programming device.
- Power down the control modules connected to the GMLAN bus by disconnecting the positive battery cable for 2 minutes.
- Reconnect the positive battery cable.
- Determine which programming device will be used to perform the recovery steps.
- Reboot the programming station or Notebook. This is to make sure nothing is in memory.
Note: Selecting Replace and Reprogram from the Select Diagnostic Tool and Process Screen is REQUIRED because some of the calibrations may be erased from the initial attempt to reprogram the module.
- Reprogram the engine control module. Select Replace and Reprogram from the Select Diagnostic Tool and Process Screen.
- Follow the on-screen instructions to complete the programming event.
- Clear all DTCs using GDS2, GDS or the Tech2.
Note: Repeat Steps 1-8 above IF another programming failure occurs. If the second attempt to reprogram in unsuccessful when following the steps 1-8 above then contact Techline Customer Support Center.
- 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.
SEOCONTENT-END
Bulletin No.: 11001A
August 2011
To View or Download this Document Click Here
Reprogramming
GM Diagnostic/Programming (TIS2Web)
Approved J2534 Device with TIS2WEB can reprogram 1996 and later All GM Modules.
To obtain the latest electronic controller calibration information for your vehicle, go to https://tis2web.service.gm.com/tis2web and enter the vehicle's 17 character Vehicle Identification Number (VIN) and select 'Get CAL ID’.
You can then compare the latest part number with the actual number installed on the vehicle to determine if a reprogram is needed.
The Service Programming System (SPS) application is part of the TIS2Web system. To program an ECU, the SPS application must communicate with the vehicle control modules using the proper J2534 programming interface tool.
The Tech 2 supports model years 1996 and beyond. With the addition of the CAN Diagnostic Interface (CANdi) module, Tech 2 is fully backward compatible with current Tech 2 functionality and operates transparently when diagnosing non-CAN-equipped vehicles.
Servicing the next generation Global A vehicles will require the diagnostic software, GDS2, Global Diagnostic System 2 running on a local PC device while the MDI is connected to the vehicle. The GM MDI is the Global Diagnostic tool for future vehicles starting with Global A vehicles.
The GM MDI was introduced in the fall of 2007 for Pass-Thru programming and offers faster programming speed. It can be used to perform Pass-Thru programming on all vehicles built since 1996 and into the future. Click here to view a list of GDS supported vehicles.
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