Section 24 (Analog Instrument Panels): Operation: Gauges: Odometer
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2001 GMC Savana Special, 2001 GMC Savana Camper Special, 2001 GMC Savana, 2001 Chevrolet RV Cutaway, and 2001 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
IPC contains a season odometer and a trip odometer. Momentarily pressing trip/reset switch on IPC will toggle between season odometer and trip odometer. In order to reset trip odometer, press trip/reset switch for greater than 2 seconds while trip odometer is displayed. IPC displays vehicle mileage and trip mileage as determined by the IPC. IPC calculates mileage based on the vehicle speed signal circuit from PCM, for gas engines, or from vehicle speed sensor buffer, for diesel engines. Odometer will display 'error' if an internal IPC memory failure is detected.