PPEI offers all current customers FREE speedometer re-calibrations. The tire size re-calibration is specifically designed for PPEI tuned vehicles that are displaying an inaccurate speed.
If you have a LML 2011+ Duramax the ABS module is only capable of recalibrating up to 34.2" tall without setting any ABS Lights on the dash.
*** Please allow 2-3 business days for order fulfillment ***
Write the First Review!