Fuel system or transmission?

This sounds like a weak fuel pump (low or high pressure) or the engine is misfiring, I would make sure the tune up is up to date, spark plugs and coils. Also, service the throttle body. Here is a guide to help check the fuel pressure. You might have a tank of bad gas as well. Also, even thought the check engine light is not on I would run the codes

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Do you know the long and short fuel trims? That can help tell us what is going on as well. You can find them from the scanner.

Spark plugs - ACDelco 41-109

I have seen the high pressure fuel pump go out on this car, Check out the images (below). Let us know what you find.

I ran codes and nothing and I was told there is no actual fuel filter that it is part of the fuel pump assembly and do not know about fuel trims

Yep, there is no fuel filter, just a strainer at the fuel pump. The trims are read on the scanner and will help tell us if the system is lean which will point to the HPFP or the lift pump.

So reran scanner it’s in my evap system I’m thinking purge valve purge canister but does that explain the kick and issue with downshift?

If it is stuck open than yes you could have a leak, here is the location of the valve, once removed you should not be able to blow through it. Check out the images (below). Let us know what you find.