I finally solved this situation. Even though I own FSDT Chicago Ohare scenery and downloaded the latest version, when I checked the GSX airport customization, all of the gates were /J not /JS. My other 2 airports - Flight Beam KSFO, and FSDT KLAX were /JS. So, I believe FSDT hasn't updated the KORD GSX scenery files yet for the SODE jetways. I spent a very long time watching a GSX video and reading the doc on customizing (in my case, none of the numpad numbers were set up for the slew functions, which are described in the doc). Anyway, first, I selected one terminal at a time (which highlights all of the gates at that terminal), each time I checked the box for Jetway Exclude Radius and left it at 1.00, then pressed Apply. Once I had done that with all terminals, I quit the GSX customization and quit P3DV4. Then you start up the GSX Control Panel from the start menu, (wiat for it to say the simulation has stopped) and check the box on the right below Compile, then click the box at the bottom for doing the compile. Close it, then start up P3DV4, and after GSX has finished initializing, wow, you now have default SODE jetways!
So, I found that the gate I was parked at would not allow the default Sode jetway to move to the door because the jetway is too big, even if I moved the jetway away from the plane. The default jetway is a 3 tunnel version, 39/19 (and it's steel). So, I clicked on the jetway tab and changed the jetway to ThrysenKruppapron 2 tunnel crystal 28/18. I positioned the nosewheel and the stop setting of the plane, and the jetway, and not only did the jetway move into position pretty well to the plane, but also, the glass jetway showed some of the passengers walking through it! So, again I selected all gates one terminal at a time and made the jetway change (I'll decide later if I want to check each one with the AI aircraft parked there for position, probably can't move the AI, but I could position the jetway probably). Anyway, there were 2 other things to do while changing all the jetways, make sure the foreground and background colors are selected for the jetway text (some gates had black for both). Also, on the main page, uncheck and recheck the No Staircases to get rid of the staircase truck if you don't need it at any of the gates.
That's it - this would be the same procedure that you would do with a 3rd party airport.