Truck not starting

1991 S-10 4WD V-6 AUTOMATIC
Mileage 140,000

My S-10 pickup suddenly lost power. Headlights will not work but flashers, turn signals and wipers still work and engine cranks normally but engine will not start.

The transmission was rebuilt about 4 weeks ago. I noticed engine light comes on while driving.

When I try to start the truck the engine light does not come on but the other lights do, like the battery and oil light.