Transmission shifter is stuck in neutral. on 2002 Hyundai Santa Fe

Just replaced alternator and vehicle runs great. But the shifter won't move out of neutral. Vehicle has been sitting for a yr. Thinking probably rusted or dirty linkage. Have no idea how to check that on the vehicle. Mechanic that put on alternatorm said linkage was tight, so could I use WD 40 on it to loosen it up. Don't want to force it.

Asked by for the 2002 Hyundai Santa Fe
take linkage apart and see if you can free up
OKAY where is the linkage located on the vehicle? I have tried to google a diagram of the linkage area and come up with nothing. thanks