#08-06-04-006G: Identifying Non-GM ECM Calibration Usages and Power-Up Hardware Detection for Duramax Diesel Engines-Photograph Tech 2 Calibration IDs and CVNs and Trans Data Screen Before Removing Engine/Trans - (Nov 9, 2009)
Subject: Information on Identifying Non-GM ECM Calibration Usages for Duramax™ Diesel Engines RPOs LBZ, LLY, LMM and Power-up Hardware Detection for Duramax™ Diesel Engine RPO LMM -- Photograph Tech 2® Calibration IDs and Calibration Verification Numbers (CVNs) and Transmission Data Screen Before Removing Engine/Transmission/Drivetrain Components
Models: 2005-2010 Chevrolet Express, Kodiak, Silverado
2005-2010 GMC Savana, Sierra, TopKick
Equipped With Duramax™ Diesel Engine RPOs LBZ, LLY, LMM
Please Refer to GMVIS
Attention: In order to process an engine/transmission/drivetrain hard part WARRANTY CLAIM, you MUST photograph the required Tech 2® screen information BEFORE disassembly or removing engine/transmission/drivetrain components from the vehicle.
This bulletin is being revised to add Tech 2® screen graphics and update the PQC and TAC contact procedure information. Please discard Corporate Bulletin Number 08-06-04-006F (Section 06 - Engine/Propulsion System).
General Motors is identifying an increasing number of engine, transmission, diesel oxidation catalyst (DOC) and exhaust particulate filter failures that are the result of non-GM ( aftermarket Power-up Kits ) engine and transmission control calibrations being used. When alteration to the GM-released engine or transmission control calibrations occurs, it subjects powertrain and driveline components such as the engine , transmission, transfer case, driveshaft and rear axle to stresses that were not tested by General Motors. It is because of these unknown stresses, and the potential to alter reliability, durability and emissions performance, that GM has adopted a policy to cancel any remaining warranty coverage to the powertrain and driveline components whenever the presence of a non-GM calibration is confirmed - even if the non-GM control module calibration is subsequently removed.
Warranty coverage is based on the equipment and calibrations that were released on the vehicle at time of first sale, or subsequently updated by GM or its dealers with approved calibrations. That’s because GM testing and validation matches the calibration to a host of criteria that is essential to assure reliability, durability and emissions performance over the life of the warranty coverage and beyond. Stresses resulting from calibrations different than those tested and released by GM can damage or weaken components, leading to poor performance and or shortened life. Additionally, non-GM issued engine control modifications do not meet the same emissions performance standards as GM issued calibrations. Depending on state statutes, individuals who install engine control module calibrations that put the vehicle outside the parameters of emissions certification standards may be subject to fines and/or penalties.
This bulletin outlines procedures to identify the presence of non-GM (aftermarket) calibrations. GM recommends performing this check whenever a hard part failure is seen on internal engine, transmission, transfer case or rear axle components, and before disassembly, repair or replacement of an engine, transmission, transfer case or rear axle assembly under warranty. It is also recommended that the engine calibration verification procedure be performed whenever diagnostics indicate that the diesel oxidation catalyst (DOC) needs replacement.
Note: BEFORE authorizing any Duramax™ diesel engine or transmission replacement, the PQC will require digital photographs of the following Tech 2® screens:
• For RPOs LLY and LBZ only: Calibration ID Numbers and Verification Numbers from the Vehicle Information screen
• For RPO LMM only: Calibration ID Numbers and Verification Numbers from the Vehicle Information AND the Programming History screen.
• For RPO LMM only: Transmission Data screen containing the Max Transmission Calc Engine Torque parameter.
Symptoms Caused by Aftermarket Power-up Kit
Some customers may have reprogrammed the engine control module (ECM) with a non-GM released calibration. The Power-Up Kit engine calibration changes fueling and timing parameters and likely contributes to the following vehicle conditions:
• Poor performance
• Driveability concerns
• Increased emissions
• Black smoke (This symptom is not valid for the Duramax™ diesel engine RPO LMM equipped with the exhaust particulate filter. The filter will trap black smoke unless it is cracked, melted or has been removed from the exhaust system.)
• Knocking noise
• Engine damage (Refer to Corporate Bulletin Number 06-06-01-007C for additional information.)
2005-2007 RPO LLY and LBZ Instructions for Confirming Calibration Verification Numbers (CVNs) -- Power-up Kit Detection
Important: In order to process an engine/transmission/drivetrain WARRANTY CLAIM , you MUST photograph the required Tech 2® screen information BEFORE disassembly or removing the engine/transmission/drivetrain components from the vehicle.
Go to TIS2WEB
Select: Calibration Information (SPS Info)
Enter the VIN
Select: Get Cal ID
Select: ECM Engine Control Module
Select: Next
Select: Complete History
Print
Take the printout to the vehicle along with the Tech 2®
Plug in the Tech 2®
Go to diagnostics and build the vehicle
Select: Powertrain
Select: Engine
*Select: Engine Control Module
*Select: Module ID Information or I/M Information System if Module ID Information selection is not available.
*If: I/M Information System was selected in step 15, it may be necessary to select: Vehicle Information in order to display the calibration information.
*Steps may vary by engine controller.
Compare the Calibration ID and Calibration Verification Number (CVN) to the CVN shown on the TIS2WEB printout. Although the part numbers will be the same for each, it is the CVN that will determine if the calibration is GM issued. The CVNs should be the same.
⇒ If the CVN information is displayed as "N/A" , it will be necessary to contact the TCSC to obtain the CVN information.
⇒ If the part numbers match and ANY CVNs DO NOT match the printout, it is likely that a non-GM certified calibration has been installed.
⇒ If ALL of the CVNs are EXACTLY the same the calibration is GM issued.
Vehicle Information Screen
Take clear digital picture(s) of the Tech 2® Vehicle Information screen(s) showing the VIN, the Calibration IDs and the Verification Numbers. Retain the printout information and the Tech 2® screen photographs with the repair order.
18.1. E-mail copies of the digital pictures to
tacsnapshot@gm.com. In the subject line of the E-mail include the phrase "Duramax™ diesel", the complete VIN and Dealer BAC. In the body of the E-mail include the VIN, mileage, R.O. number and BAC. Include a brief description of the customer concern and cause of the concern.
Note: The dealer will receive an email reply after the calibrations have been validated. The email reply will advise the dealer if the calibrations are OEM.
18.2. Allow two hours for the PQC to verify the calibrations and set up the case details.
⇒ If the PQC determines that the calibrations ARE aftermarket calibrations, DO NOT contact GM Technical Assistance to discuss warranty concerns on the aftermarket calibrations. ALL questions and concerns about warranty should be directed to the dealers Fixed Operations Manager (FOM), (Warranty Manager (WM) in Canada).
18.3. You may call the PQC two hours after submitting the required information for authorization to replace the assembly. This will provide them time to receive, review the information and set up a case on the request. Be prepared to provide all of the usual documentation that is normally required when requesting an assembly authorization from the PQC.
2007-2010 RPO LMM Instructions for Confirming Calibration Verification Numbers (CVNs) -- Power-up Kit Detection
Important: In order to process an engine/transmission/drivetrain WARRANTY CLAIM , you MUST photograph the required Tech 2® screen information BEFORE disassembly or removing the engine/transmission/drivetrain components from the vehicle.
For 2007-2010 applications, an engine control module (ECM) algorithm was implemented that records the engine calibration part number and calibration verification number (CVN) for the last 10 flash programming events. The ECM records the engine calibration part number because it contains the parameters for increasing torque and fueling rates.
If a vehicle comes in for service for a driveability/powertrain concern as a result of a Power-Up Kit installation, the dealership technician can read the last 10 engine calibration part numbers and CVN history using a Tech 2®.
The dealership technician will input each ECM calibration part number into the TIS2WEB/SPS CVN database to confirm the CVN history information. Refer to the following Tech 2® path table to verify the ECM calibrations.
Build the vehicle with the Tech 2®.
Select F0: Engine Control Module.
Select F5: Module Identification Information.
Select F1: Programming History.
Turn On the ignition, with the engine Off.
Press the ENTER Key to Continue.
Important: An original production engine operation part number programmed in the ECM from the supplier, which is the last part number shown, would not be in the TIS2WEB/SPS database.
Record the Calibration ID Numbers and Calibration Verification Numbers from the Tech 2® Programming History Screen. If the list of Calibration Part Numbers is less than 10, the first Calibration ID Number (bottom of the list) will not be in TIS2WEB/SPS CVN database. In this case, the first Calibration ID Number is programmed at the ECM production factory and is reprogrammed at the vehicle assembly plant.
From TIS2WEB/SPS, record the Calibration Part Number into the CVN Database. Get the CVN.
⇒ If the CVN DOES NOT MATCH the CVN database, an unauthorized engine calibration part WAS PROGRAMMED into the ECM.
⇒ If the CVN MATCHES the CVN database, the calibration/s are GM issued and an unauthorized engine calibration part WAS NOT used.
Programming History Screen
Take a clear digital picture of the Tech 2® Programming History screen showing the VIN, Calibration IDs and the CVNs. Retain the printout information and the Tech 2® screen photograph with the repair order.
Vehicle Information Screen
9.1. Take a clear digital picture of the Tech 2® Vehicle Information screen. Retain the printout information and the Tech 2® screen photograph with the repair order.
9.2. Take a clear digital picture of the Transmission Data screen that contains the Max Transmission Calc Engine Torque parameter. The path table is outlined in the following Instructions for Tech 2 Transmission Data Path section. Retain the Tech 2® Transmission Data screen photograph with the repair order.
9.3. E-mail copies of the digital pictures to
tacsnapshot@gm.com. In the subject line of the E-mail include the phrase "Duramax™ diesel", the complete VIN and Dealer BAC. In the body of the E-mail include the VIN, mileage, R.O. number and BAC. Include a brief description of the customer concern and cause of the concern.
Note: The dealer will receive an email reply after the calibrations have been validated. The email reply will advise the dealer if the calibrations are OEM.
9.4. Allow two hours for the PQC to verify the calibrations and set up the case details.
⇒ If the PQC determines that the calibrations ARE aftermarket calibrations, DO NOT contact GM Technical Assistance to discuss warranty concerns on the aftermarket calibrations. ALL questions and concerns about warranty should be directed to the dealers Fixed Operations Manager (FOM), (Warranty Manager (WM) in Canada).
9.5. You may call the PQC two hours after submitting the required information for authorization to replace the assembly. This will provide them time to receive, review the information and set up a case on the request. Be prepared to provide all of the usual documentation that is normally required when requesting an assembly authorization from the PQC.
2007-2010 RPO LMM Instructions for Tech 2 Transmission Data Path -- Power-up Hardware Detection
Transmission Data ONLY Available With GMC Sierra, TopKick, Chevrolet Kodiak, Silverado
An example of this hardware is a propane injection system.
A transmission control module (TCM) algorithm has been implemented that records a maximum calculated input torque. This information is available via the Tech 2®.
Build the vehicle with the Tech 2®.
Select F3: Transmission Control Module
Select F1: Data Display
Select F0: Transmission Data
Highlight: Max Transmission Calc Engine Torque
Transmission Data Screen (Max. Trans Calc. Engine Torque Parameter)
Take a clear digital picture of the Tech 2® screen showing the Transmission Data and the Max Transmission Calc Engine Torque parameter.
Retain the Tech 2® Transmission Data screen photograph with the repair order.
Warranty Information
• The Dealership Service Management must be involved in any situation that would justify the use of labor operation Z1111.
• Notify the Fixed Operations Manager (FOM) (Warranty Manager (WM) in Canada) of the situation.
• All claims will have to be routed to the FOM (WM in Canada) for approval.
• Please refer to Corporate Bulletin Number 09-00-89-016, Labor Operation Z1111 - Suspected Tampering or Vehicle Modifications for important information.
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
Z1111
Suspected Tampering or Vehicle Modifications
0.2 hr
so wide open to your advise!! Thanks guys
. He informed me he has to check first.
