Aveo 2004

The timing belt broke and was fixed so was the head but after repairs the check engine light came on. Did a diagnostic and it show that the engine had a miss fire and the transmission does not go into overdrive. Is there any suggestions as how to fix this?

Mileage on car ?
Still under manuf. warranty when belt broke?
What is the exact CEL code?

This vehicle has an interference engine, so there’s no telling what might have been damaged when the timing belt broke.

Who did the timing belt repair, and how soon after the repair did the light come on?