Hey new member here with same problem. Shifter snapped off plowing snow. Can shift manually without much effort. Looks like the cable might be frozen up. Cant find any help on how to replace the entire mechanism shifter, cable plus related parts and how to orient the torsion spring. Any advice would be greatly appreciated!
Installing the shift lever turned out to be straight forward. A bit tight for working space, especially for an old man, but easy enough conceptually.
1. Remove center console cover(s) as needed to access from above.
2. Remove retaining ring (e-clip) washer from lower (broken) end of shift lever.
3. Slide out the broken end of shift lever.
4. Position the torsion spring. I found it quite easy to figure this out. Just keep in mind that the purpose of the spring is to pull the shift lever to the right. The rest becomes apparent.
5. Slide the new shift lever in, pulling the end of the spring to the left (and/or turning the lever to the right) to hook the spring around around the lever shaft.
6. Put the retaining ring washer back on.
7. Reinstall the console covers.
8. Move the shift lever knob from the broken lever to the new one.
As for the cable, can't help you there.