Why would a 2000 grand Cherokee squeal when car is on but in a stopped position but stops noise when car is driving or when car is in park?
Check your fan belt to see if its worn or cracked. replace it.
What might be the problem if driving and then heard a single squeal from engine compartment then a loss of drive unless shifted into 1st or 2nd gear on automatic transmission?
What do you do if your 95 Cadillac Sedan deVille stopped squeaking when the rear brake calipers were replaced but then the squeak started again?
I assume you replaced the pads also. Some metallic pads have a tendency to squeal. Replace them with a non metallic pad. Usually a cheap pad will not squeal but will not last as long. You may also want to try applying some anti squeal paste to the back side of the pads and metal to metal contact points.