Black Box on NNBS trucks?
Dec 30, 2011 | 05:33 PM
#11
#08-06-04-006H: Identifying Non-GM ECM Calibration Usages for Duramax Diesel Engines and Power-up Hardware Detection - (Feb 7, 2011)
Subject:
BEFORE disassembly or removing engine/transmission/drivetrain components from the vehicle. This bulletin is being revised to update the model years and RPOs. Please discard Corporate Bulletin Number 08-06-04-006G (Section 06 – Engine/Propulsion System).
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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 (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 that prevents any UNAUTHORIZED dealer warranty claim submissions to 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:
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:
Then it goes on to tell you how to check
Subject:
Information on Identifying Non-GM ECM Calibration Usages for Duramax™ Diesel Engines RPOs LBZ, LLY, LMM, LML, LGH 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:2006-2011 Chevrolet Express, Kodiak, Silverado
2006-2011 GMC Savana, Sierra, TopKick
Equipped With Duramax™ Diesel Engine RPOs LBZ, LLY, LMM, LML, LGH
Please Refer to GMVIS
In order to process an engine/transmission/drivetrain hard part WARRANTY CLAIM, you MUST photograph the required Tech 2® screen information2006-2011 GMC Savana, Sierra, TopKick
Equipped With Duramax™ Diesel Engine RPOs LBZ, LLY, LMM, LML, LGH
Please Refer to GMVIS
BEFORE disassembly or removing engine/transmission/drivetrain components from the vehicle. This bulletin is being revised to update the model years and RPOs. Please discard Corporate Bulletin Number 08-06-04-006G (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 (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 that prevents any UNAUTHORIZED dealer warranty claim submissions to 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.)
Then it goes on to tell you how to check
Dec 30, 2011 | 05:35 PM
#12
#04-06-04-054B: Information - Non-GM Parts and Accessories (Aftermarket) - (Nov 18, 2010)
Subject: Info - Non-GM Parts and Accessories (Aftermarket)
Models: 2011 and Prior GM Passenger Cars and Trucks
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This bulletin is being revised to add model years and update to the new U.S. Fixed Operation Manager (FOM) and Canada Warranty Manager (WM) names. Please discard Corporate Bulletin Number 04-06-04-054A (Section 06 – Engine/Propulsion System).
--------------------------------------------------------------------------------
The recent rise and expansion of companies selling non-GM parts and accessories has made it necessary to issue this reminder to dealers regarding GM's policy on the use and installation of these aftermarket components.
When a dealer is performing a repair under the New Vehicle Limited Warranty, they are required to use only genuine GM or GM-approved parts and accessories. This applies to all warranty repairs, special policy repairs or any repairs paid for by GM. Parts and accessories advertised as being “the same” as parts manufactured by GM, but not sold through GM, do not qualify for use in warranty repairs, special policy repairs or any repairs paid for by GM.
During a warranty repair, if a GM original equipment part is not available through GM Customer Care and Aftersales (GM CC&A), ACDelco® distributors, other GM dealers or approved sources, the dealer is to obtain comparable, non-GM parts and clearly indicate, in detail, on the repair order the circumstances surrounding why non-GM parts were used. The dealer must give customers written notice, prior to the sale or service, that such parts or accessories are not marketed or warranted by General Motors.
It should also be noted that dealers modifying new vehicles and installing equipment, parts and accessories obtained from sources not authorized by GM are responsible for complying with the National Traffic and Motor Vehicle Safety Act. Certain non-approved parts or assemblies, installed by the dealer or its agent not authorized by GM, may result in a change to the vehicle's design characteristics and may affect the vehicle's ability to conform to federal law. Dealers must fully understand that non-GM approved parts may not have been validated, tested or certified for use. This puts the dealer at risk for potential liability in the event of a part or vehicle failure. If a GM part failure occurs as the result of the installation or use of a non-GM approved part, the warranty will not be honored.
A good example of non-authorized modification of vehicles is the result of an ever increasing supply of aftermarket devices available to the customer, which claim to increase the horsepower and torque of the Duramax™ Diesel Engines. These include the addition of, but are not limited to one or more of the following modifications:
General Motors does not support or endorse the use of devices or modifications that, when installed, increase the engine horsepower and torque. It is because of these unknown stresses, and the potential to alter reliability, durability and emissions performance, that GM has adopted a policy that prevents any UNAUTHORIZED dealer warranty claim submissions to any remaining warranty coverage, to the powertrain and driveline components whenever the presence of a non-GM (aftermarket) calibration is confirmed - even if the non-GM control module calibration is subsequently removed. Refer to the latest version of Bulletin 09-06-04-026 (V8 Gas Engines) or 06-06-01-007 (Duramax™ Diesel Engines) for more information on dealer requirements for calibration verification.
These same policies apply as they relate to the use of non-GM accessories. Damage or failure from the use or installation of a non-GM accessory will not be covered under warranty. Failure resulting from the alteration or modification of the vehicle, including the cutting, welding or disconnecting of the vehicle's original equipment parts and components will void the warranty.
Additionally, dealers will NOT be reimbursed or compensated by GM in the event of any legal inquiry at either the local, state or federal level that results from the alteration or modification of a vehicle using non-GM approved parts or accessories.
Dealers should be especially cautious of accessory companies that claim the installation of their product will not void the factory warranty. Many times these companies have even given direction on how to quickly disassemble the accessory in an attempt to preclude the manufacturer from finding out that is has been installed.
Any suspect repairs should be reviewed by the Fixed Operations Manager (FOM), and in Canada by the Warranty Manager (WM) for appropriate repair direction. If it is decided that a goodwill repair is to be made on the vehicle, even with the installation of such non-GM approved components, the customer is to be made aware of General Motors position on this issue and is to sign the appropriate goodwill documentation required by General Motors.
It is imperative for dealers to understand that by installing such devices, they are jeopardizing not only the warranty coverage, but also the performance and reliability of the customer's vehicle.
Subject: Info - Non-GM Parts and Accessories (Aftermarket)
Models: 2011 and Prior GM Passenger Cars and Trucks
--------------------------------------------------------------------------------
This bulletin is being revised to add model years and update to the new U.S. Fixed Operation Manager (FOM) and Canada Warranty Manager (WM) names. Please discard Corporate Bulletin Number 04-06-04-054A (Section 06 – Engine/Propulsion System).
--------------------------------------------------------------------------------
The recent rise and expansion of companies selling non-GM parts and accessories has made it necessary to issue this reminder to dealers regarding GM's policy on the use and installation of these aftermarket components.
When a dealer is performing a repair under the New Vehicle Limited Warranty, they are required to use only genuine GM or GM-approved parts and accessories. This applies to all warranty repairs, special policy repairs or any repairs paid for by GM. Parts and accessories advertised as being “the same” as parts manufactured by GM, but not sold through GM, do not qualify for use in warranty repairs, special policy repairs or any repairs paid for by GM.
During a warranty repair, if a GM original equipment part is not available through GM Customer Care and Aftersales (GM CC&A), ACDelco® distributors, other GM dealers or approved sources, the dealer is to obtain comparable, non-GM parts and clearly indicate, in detail, on the repair order the circumstances surrounding why non-GM parts were used. The dealer must give customers written notice, prior to the sale or service, that such parts or accessories are not marketed or warranted by General Motors.
It should also be noted that dealers modifying new vehicles and installing equipment, parts and accessories obtained from sources not authorized by GM are responsible for complying with the National Traffic and Motor Vehicle Safety Act. Certain non-approved parts or assemblies, installed by the dealer or its agent not authorized by GM, may result in a change to the vehicle's design characteristics and may affect the vehicle's ability to conform to federal law. Dealers must fully understand that non-GM approved parts may not have been validated, tested or certified for use. This puts the dealer at risk for potential liability in the event of a part or vehicle failure. If a GM part failure occurs as the result of the installation or use of a non-GM approved part, the warranty will not be honored.
A good example of non-authorized modification of vehicles is the result of an ever increasing supply of aftermarket devices available to the customer, which claim to increase the horsepower and torque of the Duramax™ Diesel Engines. These include the addition of, but are not limited to one or more of the following modifications:
- Propane injection
- Nitrous oxide injection
- Additional modules (black boxes) that connect to the vehicle wiring systems
- Revised engine calibrations downloaded for the engine control module
- Calibration modules which connect to the vehicle diagnostic connector
- Modification to the engine turbocharger waste gate
General Motors does not support or endorse the use of devices or modifications that, when installed, increase the engine horsepower and torque. It is because of these unknown stresses, and the potential to alter reliability, durability and emissions performance, that GM has adopted a policy that prevents any UNAUTHORIZED dealer warranty claim submissions to any remaining warranty coverage, to the powertrain and driveline components whenever the presence of a non-GM (aftermarket) calibration is confirmed - even if the non-GM control module calibration is subsequently removed. Refer to the latest version of Bulletin 09-06-04-026 (V8 Gas Engines) or 06-06-01-007 (Duramax™ Diesel Engines) for more information on dealer requirements for calibration verification.
These same policies apply as they relate to the use of non-GM accessories. Damage or failure from the use or installation of a non-GM accessory will not be covered under warranty. Failure resulting from the alteration or modification of the vehicle, including the cutting, welding or disconnecting of the vehicle's original equipment parts and components will void the warranty.
Additionally, dealers will NOT be reimbursed or compensated by GM in the event of any legal inquiry at either the local, state or federal level that results from the alteration or modification of a vehicle using non-GM approved parts or accessories.
Dealers should be especially cautious of accessory companies that claim the installation of their product will not void the factory warranty. Many times these companies have even given direction on how to quickly disassemble the accessory in an attempt to preclude the manufacturer from finding out that is has been installed.
Any suspect repairs should be reviewed by the Fixed Operations Manager (FOM), and in Canada by the Warranty Manager (WM) for appropriate repair direction. If it is decided that a goodwill repair is to be made on the vehicle, even with the installation of such non-GM approved components, the customer is to be made aware of General Motors position on this issue and is to sign the appropriate goodwill documentation required by General Motors.
It is imperative for dealers to understand that by installing such devices, they are jeopardizing not only the warranty coverage, but also the performance and reliability of the customer's vehicle.
Dec 30, 2011 | 05:47 PM
#13
TECH Fanatic
Joined: Feb 2009
Posts: 1,635
Likes: 1
From: Baton Rouge, LA
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.
Dec 30, 2011 | 06:04 PM
#14
#09-06-04-026C: Identifying Non-GM (Aftermarket) Engine and Transmission Calibrations for V8 Gas Engines Using Tech 2 or Global Diagnostic System (GDS) - (Aug 13, 2010)
Subject:
General Motors is identifying an increasing number of engine, transmission and catalytic converter part failures that are the result of non-GM (aftermarket) 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 (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 that prevents any UNAUTHORIZED dealer warranty claim submissions to any remaining warranty coverage, to the powertrain and driveline components whenever the presence of a non-GM (aftermarket) 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 sale, or subsequently updated by GM. 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 from those tested and released by GM can damage or weaken components, leading to poor performance and or shortened life.
Additionally, non-GM (aftermarket) issued engine control modifications often 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 a procedure to identify the presence of non-GM (aftermarket) calibrations. GM recommends performing this check whenever a hard part failure is seen on internal engine or transmission components, or before an engine assembly or transmission assembly is being replaced under warranty. It is also recommended that the engine calibration verification procedure be performed whenever diagnostics indicate that catalytic converter replacement is indicated.
The PQC has a process to confirm the ECM/PCM calibration is GM issued. The PQC will require a picture of the engine calibration verification screen, as outlined in this bulletin, before authorizing any V8 gas powered engine replacement.
If a non-GM calibration is found and verification has taken place through GM, the remaining powertrain and driveline warranty will be blocked and notated in GMVIS and the dealership will be notified. This block prevents any
UNAUTHORIZED warranty claim submission.
Tech 2® Displaying All Zeroes for the Verification Numbers on the Calibration ID and Verification Number Screen
If the Tech 2® that you are using displays all zeroes for the Verification Numbers as shown, then perform the following steps:
This information applies to the 2010 Camaro and is typical of the procedure that will be used on Global A vehicles.
Subject:
Identifying Non-GM (Aftermarket) Engine and Transmission Calibrations for V8 Gas Engines Using Tech 2® or Global Diagnostic System (GDS)
Models:2006–2011 GM Passenger Cars and Light Duty Trucks (Excluding Saab 9-7X)
2006–2009 HUMMER H2
2006–2010 HUMMER H3
Equipped with V8 Gas Powered Engines Only
This bulletin applies to V8 gas powered engines ONLY. 2006–2009 HUMMER H2
2006–2010 HUMMER H3
Equipped with V8 Gas Powered Engines Only
General Motors is identifying an increasing number of engine, transmission and catalytic converter part failures that are the result of non-GM (aftermarket) 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 (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 that prevents any UNAUTHORIZED dealer warranty claim submissions to any remaining warranty coverage, to the powertrain and driveline components whenever the presence of a non-GM (aftermarket) 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 sale, or subsequently updated by GM. 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 from those tested and released by GM can damage or weaken components, leading to poor performance and or shortened life.
Additionally, non-GM (aftermarket) issued engine control modifications often 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 a procedure to identify the presence of non-GM (aftermarket) calibrations. GM recommends performing this check whenever a hard part failure is seen on internal engine or transmission components, or before an engine assembly or transmission assembly is being replaced under warranty. It is also recommended that the engine calibration verification procedure be performed whenever diagnostics indicate that catalytic converter replacement is indicated.
The PQC has a process to confirm the ECM/PCM calibration is GM issued. The PQC will require a picture of the engine calibration verification screen, as outlined in this bulletin, before authorizing any V8 gas powered engine replacement.
If a non-GM calibration is found and verification has taken place through GM, the remaining powertrain and driveline warranty will be blocked and notated in GMVIS and the dealership will be notified. This block prevents any
UNAUTHORIZED warranty claim submission.
- Connect the Tech 2® to the vehicle.
- Go to: Diagnostics and build the vehicle.
- Select: Powertrain.
- Select: Engine.
- *Select: Engine Control Module or PCM.
- *Select: Module ID Information or I/M Information System if the Module ID Information selection is not available.
- *If "I/M information System" was selected, it may be necessary to select "Vehicle Information" in order to display the calibration information.If the CVN information is displayed as “N/A”, it will be necessary to contact the TCSC to obtain the CVN information.
- Take a CLEAR digital picture of the Tech 2® Vehicle Information screen showing the engine Calibration IDs and Verification Numbers as shown above. Retain the printout information and the Tech 2® screen photograph with the repair order. Note: All pictures must be sent as a .jpg file.
- E-mail a copy of the picture to ?@gm.com. In the subject line of the e-mail include the phrase “V8 Cal” as well as 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 e-mail reply after the calibrations have been validated. The e-mail reply will advise the dealer if the calibrations are OEM.
- 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. - You may call the PQC two hours after submitting the e-mail for authorization to replace the assembly. This will provide them time to receive, review and set up a case on the request. Please be prepared to provide all the usual documentation that is normally required when requesting an assembly authorization from the PQC.
Tech 2® Displaying All Zeroes for the Verification Numbers on the Calibration ID and Verification Number Screen
If the Tech 2® that you are using displays all zeroes for the Verification Numbers as shown, then perform the following steps:
- Update the Tech 2® with the latest software from TIS2WEB.
- Turn OFF the ignition for 90 seconds.
- Connect the Tech 2® to the vehicle.
- Turn ON the ignition, and build the vehicle. Observe the Tech 2® Calibration ID and Verification Number screen for proper operation.If the Tech 2® screen still does not display properly, then turn OFF the ignition for 90 seconds again. Turn ON the ignition and observe the same screen for proper operation.
This information applies to the 2010 Camaro and is typical of the procedure that will be used on Global A vehicles.
- Turn OFF the ignition.
- Connect the MDI to the Data Link Connector (DLC) of the vehicle. Note: Use the USB port to make the following MDI connection:
- Connect the MDI to a PC or laptop that has been downloaded with the GDS application from TIS2WEB. Note: At least one Diagnostic Package must be installed on the PC to perform diagnostics. If GDS was just installed, select: Add New Diagnostic Package and then select: a Diagnostic Package to download.
- Click: On the GDS icon on the PC.
- The Login Page will appear.
- Select: A User.
- The ID Screen will appear.
- Select: The serial number of the MDI being used.
- Select: Connect.
- Verify that the system status is ready by observing for a flashing PC light icon on the MDI.
- Select: Make, Model and Model Year, in order to build the vehicle. Click: Upload VIN, to allow the VIN to be reported to the PC.
- At: The Verification step, turn ON the ignition, with the engine OFF.
- Select: Next Action.
- The Home Page will appear.
- Select: Next.
- The Diagnostic Screen will appear. Note: Due to vehicle build, softwareand RPO variations, GDS may ask for additional information in Step 18.
- Select: Engine ID, if prompted.
- Select: Module Diagnostics.
- Select: ECM.
- Select: ID Information.
- The Diagnostics page will appear.
Typical View of GDS Calibration History Screen
Note: GDS is capable of displaying up to 10 Calibration History events. - Select: Calibration History from the drop down menu in order to display the following items on the screen:
- Calibration History Buffer
- Number of Calibration History Events Stored
- Calibration Part Number History
- Calibration Verification Number History
- Select: Screenshot.
- Name and save the file in an appropriate folder.
- Select : Print, and retain a copy of the screenshot with the repair order.Note: All pictures must be sent as a .jpg file
- E-mail a copy of the screenshot to ?@gm.com. In the subject line of the e-mail include the phrase “V8 Cal” as well as 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 e-mail reply after the calibrations have been validated. The e-mail reply will advise the dealer if the calibrations are OEM
- 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, - You may call the PQC two hours after submitting the e-mail for authorization to replace the assembly. This will provide them time to receive, review and set up a case on the request. Please be prepared to provide all the usual documentation that is normally required when requesting an assembly authorization from the PQC.
Jan 1, 2012 | 04:05 PM
#16
TECH Fanatic
iTrader: (2)
Joined: Nov 2001
Posts: 1,124
Likes: 1
From: Michigan
Oh wise one, what was incorrect in my post? Everything I stated was 100% correct.
And to Larry, what Diablo stated about gas engines is correct. If you flash it back to stock, you will go undetected. As far as trucks go, only the LML Duramax equipped ones are capable of this detection right now. I have personally verified the CVN numbers on multiple 2011 trucks. When flashed back to stock, they are the stock numbers. The e38 equipped trucks cannot and do not store previous tune histories, like the Global A vehicles do, such as the camaro's screen shot listed above.
And to Larry, what Diablo stated about gas engines is correct. If you flash it back to stock, you will go undetected. As far as trucks go, only the LML Duramax equipped ones are capable of this detection right now. I have personally verified the CVN numbers on multiple 2011 trucks. When flashed back to stock, they are the stock numbers. The e38 equipped trucks cannot and do not store previous tune histories, like the Global A vehicles do, such as the camaro's screen shot listed above.
Jan 1, 2012 | 04:57 PM
#17
Oh wise one, what was incorrect in my post? Everything I stated was 100% correct.
And to Larry, what Diablo stated about gas engines is correct. If you flash it back to stock, you will go undetected. As far as trucks go, only the LML Duramax equipped ones are capable of this detection right now. I have personally verified the CVN numbers on multiple 2011 trucks. When flashed back to stock, they are the stock numbers. The e38 equipped trucks cannot and do not store previous tune histories, like the Global A vehicles do, such as the camaro's screen shot listed above.
And to Larry, what Diablo stated about gas engines is correct. If you flash it back to stock, you will go undetected. As far as trucks go, only the LML Duramax equipped ones are capable of this detection right now. I have personally verified the CVN numbers on multiple 2011 trucks. When flashed back to stock, they are the stock numbers. The e38 equipped trucks cannot and do not store previous tune histories, like the Global A vehicles do, such as the camaro's screen shot listed above.
Jan 1, 2012 | 05:03 PM
#18
Dig around about CVN's and you will find a thread from a few years back talking about this. You will see How I also know how the correct the displayed CVN's on the Tech II and still have the correct CVN's in the calibration.
If you want to tune and have GM pickup the bill when you have a failure that's just wrong.
About 2 years ago I have 2 guys from the GM zone office come in and talk to us about me and the CVN game. I no longer offer that
If you want to tune and have GM pickup the bill when you have a failure that's just wrong.
About 2 years ago I have 2 guys from the GM zone office come in and talk to us about me and the CVN game. I no longer offer that
Jan 1, 2012 | 08:41 PM
#19
TECH Fanatic
iTrader: (2)
Joined: Nov 2001
Posts: 1,124
Likes: 1
From: Michigan
GM does NOT use OnStar for these purposes. If they did, that would have been brought to light a long time ago. I can also see there being legal issues with them doing so.
Maybe you missed where I posted this above. I would never expect GM to pickup the bill for a tune that damaged the powertrain...I also get after others who expect GM to do that, but that doesn't mean I'm not going to provide correct information about how they check for tunes.
Jan 1, 2012 | 09:42 PM
#20
OK, I am not a techy and tried to glance over everything you posted and I am not following everything.
In plain and simple English, can you or can you not tune a 2011 Denali 6.2L and then flash it back to stock tune without throwing any codes or detection?
And I do not think anyone is trying to tune a truck and then make GM pay for it if it causes a problem. The fact is that if the dealership finds anything non-stock, they will use it as an excuse to void the warranty even if it doesn't affect the malfunctioned part directly.
In plain and simple English, can you or can you not tune a 2011 Denali 6.2L and then flash it back to stock tune without throwing any codes or detection?
And I do not think anyone is trying to tune a truck and then make GM pay for it if it causes a problem. The fact is that if the dealership finds anything non-stock, they will use it as an excuse to void the warranty even if it doesn't affect the malfunctioned part directly.