DIC Reprogram
Is it possible to have the dealer reprogram the Driver Information center in my 2013 GMC truck?
Forum Discussion
The tire size is not programmed into the IPC, ( Instrument panel cluster), I would GUESS incorrect tires size or possible previous aftermarket tuner. Tire size data is in the ECM. I don't know if the dealer tool has a function for modifying that. I'm inclined to think not. The MPG and gallons used may never be 100% spot on, the speedometer should be correctable.
