I just had my rear brakes done on my '87 GL. Now there is an obnoxious squeek coming from them after I drive for awhile, even when I'm not braking, and doesn't stop when I hit the brakes. also at times, (and it seems to come on more when I've been driving for awhile also), there is a whining coming from what seems to be one wheel in the rear, kinda like when you rub crystal when your finger is wet and you get that ohhhhhmmmmm sound, this also when I am not braking and doesn't seem to go away when I hit the brakes. really weird. Is this at all normal? some kind of "wear in period" for new brakes? Would appreciate some input on this if possible. thanks you guys

good day
TonyD
'87GL