The sticking happens because of quality control using OSHA and EPA approved testing fluids, after sitting on the shelf a while some tend to stick more than others.
The OE on that vehicle AFAIK are Bosch, Chrysler used to use a lot of Siemens/Deka ball injectors which tended to be very problematic.
The SMP for this application are unmarked Bosch so yes OE without the star. The way to unstick them is to fire them with a tester (the one from OTC works great) and just tap the metal end on the side lightly with a small nylon hammer, most of the time they will start firing. No need to hit it hard just very light.
If not put them in a small plastic container overnight with simple green, you can keep the plug out but it doesn't matter, there is a large rubber seal behind the terminals and the SG will not corrode the terminals. It will remove the testing fluid residue and they will fire. Once they have fuel in them it will not be issue.
Wash them off with water and blow dry them with compressed air then test them, if they all fire install. I never had a new one that did not work after either of these solutions was used.
I have 6 brand new OE GM injectors here right now that 4 were stuck, the SG trick got them up and running no problem, it will not harm the injectors in any way, I got this trick right from a manufactures engineer. It doesn't matter where you source them from it can and does happen depending on how long its been sitting, some models never seem to stick.
This is the only tool I buy often from HF. For this sort of work and installing filters its the best deal out there.
https://www.harborfreight.com/hand-tools/hammers/double-sided-mallet-with-wooden-handle-98285.html
Edit: Only simple green, nothing else. Some of the others will corrode the terminals.