Express 2500 V8-6.6L DSL Turbo (2010)
‹› If any injectors are replaced, go to Reprogram Injector Flow Rates parameter and enter the flow rate number of the new injector to the
corresponding cylinder. The flow rate numbers will automatically update both control modules.
‹› If the ECM was replaced, go to Copy GPCM Inj. Flow Rates to ECM parameter and reprogram the ECM. This will update the ECM with the
GPCM flow rate numbers.
‹› If the GPCM was replaced or the flow rate numbers are not the same for both modules, go to Copy ECM Inj. Flow Rates to GPCM parameter
and reprogram the GPCM. This will update the GPCM with the ECM flow rate numbers.
‹› If both control modules were replaced, go to Reprogram Injector Flow Rates parameter and enter the previously recorded flow rate numbers or
the numbers retrieved from each individual injector, to the corresponding cylinders.
Repair Instructions
Important: The ECM and the GPCM must be allowed to completely power down after programming is complete.
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
3. Turn ON the ignition, with the engine OFF, and clear the DTCs.
4. Disconnect the scan tool and turn OFF the ignition for 2 minutes.
5. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in order
to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List - Vehicle (See:
Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle)
and perform the appropriate diagnostic procedure.
OR
If the repair was symptom related, duplicate the conditions under which the customer concern occurred to verify the repair. If the customer
concern reoccurs, return to Symptoms - Vehicle (See: Testing and Inspection/Symptom Related Diagnostic Procedures/Symptoms - Vehicle) and
perform the appropriate symptom diagnostic.
