2003 cvpi speedometer calibration

Hello, I recently upgraded my 2003 CVPI by putting a 3.73 gear in. I'm having trouble finding a way to recalibrate the speedometer. I took it to the dealership and they couldnt do it in the programmable parameters and the Superchips tuner cant do it either. Does anyone have any ideas/suggestions.
Thanks, Ryan.

See if you can find the plastic gear that is for a 3:73 and change the gear on the VSS. Since it cant be programmed, you need to change the mechanical end of it.

From what i understand the 2003 and newer models dont use VSS or colored plastic speedo gears to derive vehicle speed and use the "OSS" output shaft speed sensor.

See if you can find the plastic gear that is for a 3:73 and change the gear on the VSS. Since it cant be programmed, you need to change the mechanical end of it.