C 3500 Truck 2WD V8-454 7.4L VIN J SFI (1999)
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Vehicle Control Module: Description and Operation
Reprogramming (Flashing) the Control Module
Some vehicles allow the reprogramming of the control module without removal from the vehicle. This provides a flexible and a cost-effective method of
making changes in software and calibrations.
Refer to the latest Techline information on reprogramming or flashing procedures.