Savana 4500 V8-6.6L DSL Turbo (2009)
Engine Control Module: All Technical Service Bulletins
Diesel Engine - Damage Due To Power-Up Devices
INFORMATION
Bulletin No.: 06-06-01-007F
Date: March 31, 2010
Subject: Information On Identifying Duramax(TM) Diesel LB7, LLY, LMM, LBZ Overpower Engine Breakdown or Non-Function Due to Aftermarket
Power-Up Devices vs. Non Overpower Engine Non-Function of Pistons, Cylinders, Valvetrain Components and/or Turbocharger DTC P003A Set
Models:
2001-2010 Chevrolet Silverado
2003-2009 Chevrolet Kodiak
2006-2010 Chevrolet Express
2001-2010 GMC Sierra
2003-2009 GMC TopKick
2006-2010 GMC Savana
Equipped With Duramax(TM) Turbocharged Diesel Engine RPOs LB7, LLY, LMM, LBZ
Please Refer to GMVIS
Supercede:
This bulletin is being revised to add text to the end of the Caution statement. Please discard Corporate Bulletin Number 06-06-01-007E (Section 06 -
Engine/Propulsion System).
Caution
Customers should be informed if a hard part failure is observed in the engine, transmission, transfer case and/or other driveline components, it is likely
that powertrain components were weakened to the point of premature failure, while subjected to the higher stresses from Aftermarket Power-Up Devices.
Failures associated with the installation of Aftermarket Power-Up Devices, which have been verified, are not covered under the terms of the New
Vehicle Warranty. In the majority of these cases, the Fixed Operations Manager (FOM) (in Canada, Warranty Manager) should be contacted and the
remaining portion of the powertrain portion of the New Vehicle Warranty blocked.
GM has adopted a policy that prevents any UNAUTHORIZED dealer warranty claim submissions to any remaining warranty coverage.
General Motors Position On Aftermarket Power-Up Devices
Important
General Motors does not support or endorse the use of devices or modifications that, when installed, increase the engine horsepower and
torque. Refer to Service Bulletin Number 04-06-04-054A or newer - Warranty Admin. - Non-GM Parts and Accessories (Aftermarket).
Important
For further information on aftermarket power-up kits, refer to February 2006 Emerging Issues Course Number 10206.02D. In Canada,
information on aftermarket power-up kits was covered in the April 2006 TAC TALK program.
Aftermarket power-up devices are non-approved by General Motors. These devices are usually piggy-backed in the main engine harness or remain
connected to the diagnostic connector to upload the calibration to the ECM. Recent warranty reviews of returned engines show engine breakdown or
non-function due to power-up devices that are utilized for increased horsepower and torque. The following information will assist technicians in
identifying overpower engine breakdown or non-function due to aftermarket power-up devices vs. non overpower engine breakdown or non-function.
Non-GM parts can alter the design of the vehicle. GM dealers need to be aware of the quality of parts being installed on vehicles. If failure occurs as a
result of installation of sub-par parts, warranty coverage may be denied. Refer to Service Bulletin Number 04-06-04-054A or newer - Warranty Admin. -
Non-GM Parts and Accessories (Aftermarket).
Installed Power-Up Kit
Aftermarket power-up kits have become a very popular add on for performance-minded customers. These devices can add horsepower and torque and
can add additional stress to the engine. These aftermarket calibrations take the Duramax(TM) powertrain outside of its design torque and horsepower
rating. They do this by altering air/fuel ratios and injector timing, resulting in excessive cylinder pressure and temperature. When these calibrated
parameters are altered, it will upset the design balance and can lead to a reduction of engine life expectancy. Generally, in inspection of Duramax(TM)
engine failure due to power-up failures, two or more cylinders will be affected.
Installed Power-Up Kit
-
Once installed, the calibration may mask itself with the factory original calibration ID and may remain the same. Refer to Service Bulletin Number
08-06-04-006F or newer - Information on Identifying Non-GM Calibration Usage for LMM Duramax(TM) Diesel Engine.
