Dome light and under dash lights will not turn on?

Do all four lights under the dash not come on? If it is just one, then it will be the bulb. If all four do not come on it can be the ground (G202 right side of dash). These lights are controlled by the BCM which might be having an issue, I would perform a CAN scan to see if any codes are stored, this video will show you how:

https://youtu.be/u-4syLc-ifQ

Please give me more information and get back to me on what you find.