Want start where is my fuel level sensor at

Hello, fuel level sensor isn't something that will cause a no start. There are so many possibilities of cause there that I can't even begin to suggest a path. You really need some hands on testing at a shop near you. Seek local guidance, nothing else is suitable as a "guess". Did you install the transmission or another shop? If a shop, seek help from them first. www.repairpal.com/repair-shops