Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
Shift Indicator: Description and Operation
The purpose of the shift light is to provide a display to indicate the optimum fuel economy point for upshifting the manual transmission based on engine
speed and load. The display is a lamp on the instrument panel. Activation of the ECM lamp driver will turn the lamp on.
