GM 30 Van V8-454 74L VIN J SFI (1996) PROM - Programming TSB - SPS/FLASH EPROM Improvement
SPS/EEPROM Programming
1993 to current Reprogrammable Vehicles
Note: If programming a new control module you must request info from the new control module first.
Battery voltage should be checked and at full charge before reprogramming takes place. System to be programmed should NOT be connected to a
battery charger. Incorrect voltage could cause programming and/or control module failure.
