Savana 3500 V8-6.6L DSL Turbo VIN 6 (2007)
required when requesting an assembly authorization from the PQC.
2007-2011 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(R) screen information
BEFORE disassembly or removing the engine/transmission/drivetrain components from the vehicle.
For 2007-2011 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(R).
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(R) path table to verify the ECM calibrations.
1. Build the vehicle with the Tech 2(R).
2. Select F0: Engine Control Module.
3. Select F5: Module Identification Information.
4. Select F1: Programming History.
5. Turn On the ignition, with the engine Off.
6. 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.
7. Record the Calibration ID Numbers and Calibration Verification Numbers from the Tech 2(R) 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.
8. 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
9. Take a clear digital picture of the Tech 2(R) Programming History screen showing the VIN, Calibration IDs and the CVNs. Retain the printout
information and the Tech 2(R) screen photograph with the repair order.
Vehicle Information Screen
1. Take a clear digital picture of the Tech 2(R) Vehicle Information screen. Retain the printout information and the Tech 2(R) screen photograph
with the repair order.
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(R) Transmission Data screen
photograph with the repair order.
