how do I reset service engine soon light?

That is your check engine light. It's not for oil changes. Get your codes read

The service engine soon light is for telling you that the oil is ready to change, hence SERVICE not check, my 04 Chevy after changing oil you turn ignition switch to the ON position and press accelerator to floor and let off 3 times to reset. The CHECK engine light comes on when the computer notices a code

Please fact check. It was common on gm vehicles specifically the s10. The check engine light says "service engine soon". They later went to the light we all know and love.