Shift Indicator Light

ECM controls shift indicator light to indicate shift point to obtain maximum fuel economy based on engine speed and load. The ECM will activate shift indicator light when following conditions are present:

Engine is not idling or under heavy load.
Engine speed is greater than 1500 RPM.
Vehicle speed is greater than 3 MPH.

NOTE: Engine speed for shift indicator light operation may vary with intake manifold pressure and coolant temperature.