What does CheckSum mean (tunerpro rt)
01-10-2005, 10:16 AM
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Car: 1989 GTA
Engine: 383 Fuel Injected
Transmission: Pro-Street 700-R4 by Pro-built
Axle/Gears: Moser 12 bolt w/posi
What does CheckSum mean (tunerpro rt)
What does checksum mean, I changed the values for my fan on/off temperaures and it changed teh checksum value from 5BE6 to 5B9A.
01-10-2005, 10:53 AM
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Engine: 5.7L V8
Transmission: 700R4
The checksum is what the ECM uses to see if the data in the PROM is correct.
When you make changes to the bin, your program changes the checksum. This number needs to match the checksum that the ECM generates, otherwise you'll get an SES light.
GM does this to make sure there isn't any corrupted data in the bin.
When you make changes to the bin, your program changes the checksum. This number needs to match the checksum that the ECM generates, otherwise you'll get an SES light.
GM does this to make sure there isn't any corrupted data in the bin.
01-10-2005, 12:26 PM
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Car: 1989 GTA
Engine: 383 Fuel Injected
Transmission: Pro-Street 700-R4 by Pro-built
Axle/Gears: Moser 12 bolt w/posi
So it is ok that this number changed, i do not need to change the checksum back to the original number?
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