The only relay for the cooling fan on my '96 is in the PDC. If you know of another one it would help me immensely. I've been chasing a cooling fan problem for six months now. The one that shows up on Autozone's website is not the one for the PDC.
There is also a 20A fuse in the PDC for the fan. If that's good, pull the plug on the coolant temp sensor at the thermostat housing. If your fan kicks on, that's bad.
Not sure if this helps but here is my ongoing attempt to fix my fan: