Module Reprogramming

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Module reprogramming (also referred to as "flashing") is a scan tool process which updates the strategy/calibration in a module. Reprogramming a module with the same level of software will not improve module operation or repair a hardware failure. Module reprogramming is automatically carried out during PMI when a later strategy/calibration is available.

NOTE: Module reprogramming should be limited to circumstances where a published TSB procedure recommends doing so.

NOTE: A module cannot communicate with other modules on the communication network while being reprogrammed. Clear any network communication DTCs which may have been set in other modules during the reprogramming process.

NOTE: Some modules are reprogrammed in coordination with other modules. Follow the Integrated Diagnostic System (IDS) key cycling instructions carefully to avoid reprogramming errors, including failure of programming one or more of the modules.