Engine will not start

It appears you have tac/throttle actuator control. I'd check for trouble codes related to that system. To check codes, yourself, at the least you need an obd2 code reader that will work with your vehicle and read manufacturer specific codes as well as p0 codes. You might take an old tooth brush and clean throttle bore as well as throttle plate. Don't force the throttle plate. One of the modes for tac, will shut down tac motor--fuel injectors and ignition coil. The information is GM tac.

I will try it and get back with results.

Let us know.

Went out to try to clean it and decided to try and crank it one more time. The car started up . White smoke came from the exhaust but it still running. Left it sitting for a few days until now

The white smoke concerns me, are you losing coolant? Is the exhaust just what see on a cold day or is it something else?

It’s not losing anything that I know of. It was cold. My wife drove it to work and back with no problems. Then this morning it won’t start again. Starting to believe it is just because it’s low on gas and parked down hill. Lol

You may be correct? Check out the link.
https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

Added five gallons of gas and it started.

Good job.