Camaro RS V8-305 5.0L VIN E TBI (1990)
Shift Light: Testing and Inspection
Chart C-8B Manual Trans. Shift Light Check
Chart C-8B
Wiring Diagram For M/T Shift Light
CIRCUIT DESCRIPTION:
The shift light indicates the best transmission shift point for maximum fuel economy. The light is controlled by the ECM and is energized by grounding
circuit 456. The ECM uses the measured engine and the vehicle speeds to calculate what gear the vehicle is in. It's this calculation that determines when
