05 grand prix stalls then shuts you out HELPPPPPPPP

Also no light but it threw a few codes . "one being the shift solenoid B electrical/circuit". the other codes were related to an engine light malfunction.

Had the same thing happen w/ my 2005 GP 3.8 on multiple occasions. I've fallen down this rabbit hole more than once. From my experience, I've found that the solution to any random misfiring, sputtering, intermittent stalls, is to replace the Ignition Control Module (ICM). I've replaced this part on my 05 GP 3 times now. Don't buy the f-ing ValuCraft, the $20 savings is not worth it. Get the Duralast brand. There must be a manufacturing defect w/ this part, because it goes out so often. Note: in all fairness, if you have multiple engine misfires happening due to other issues, this can blow the ICM. However, in my experience, replacing the ICM once a year has become a routine maintenance step. 210,000+ miles on the GP, and this seems to be the only component that constantly fails. Just my 2 cents.

Another note/symptom: mornings when it rained out or it was really humid the night before, the GP would sputter until warmed up in the AM. Seems moisture, or air moisture has an effect. Again, replacing the ICM made this problem go away (for a while at least).