It is easy to replace. It is behind the glove box.
You frop the knee bolster, remove glove box and then
replace. Box my come out first then bolster, I forget.
Takes about an hour. Tighten the knee bolster bolts
(for the steel bar, which must come out) up tight when
you put it back to avoid (any more) squeeks.

Thermostat failure is common, too. Make sure the car
is actually at operating em,perature (the temp gage should
be at 3 o'clock position).