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Change Pcm Programming For Fuel Tank Volume.

chrisb1

By chrisb1
in Ask A GM Technician

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chrisb1 Enthusiast

chrisb1

Posted
Posted

Has anyone been able to modify the factory programmed fuel tank volume in the PCM to

accommodate a larger midship fuel tank (Transfer Flow 45 gallon as an example). The vehicle

trip computer will not function for miles left since it believes the vehicle still has a 26 gallon stock tank.

The average fuel use will function but not the miles left to empty.

 

2008 GMC 2500HD Diesel.

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