Fuel Level

The instrument cluster determines the fuel by monitoring a discrete input from the fuel level sender. The raw fuel level data is filtered for gauge display purposes. The instrument cluster has two filter modes. A slow (heavy) filter is used whenever the vehicle is not in PARK, this prevents fuel slosh from affecting the gauge. A fast (light) filter is used whenever the vehicle is in PARK, this allows the gauge to respond quickly when the vehicle is being fueled. The instrument cluster also sends raw fuel level data to the Powertrain Control Module (PCM) via class 2 serial data line.