Instrument Cluster Gauge Amplifier/Check Gauge Module

The gauge amplifier is a small printed circuit board located in a pocket on the back of the instrument cluster. There are no provisions for calibration or adjustment.
The gauge amplifier electrically averages the fuel sender readings so the gauge displays the actual fuel level and not fluctuations due to fuel sloshing.
The gauge amplifier also supplies the signal to illuminate the check gauge indicator to indicate low fuel, high engine coolant temperature, or low engine oil pressure.
The fuel gauge and instrument cluster gauge amplifier must be replaced as a set. The fuel gauge and gauge amplifier are calibrated together.