It's loose or it's a bad bearing on 1 of your accessories. try tightening it & see if improves.
If a 1996 Cadillac Sedan DeVille is making a backfire noise from the engine compartment while at a steady speed, it is probably due to a bad oxygen sensor. The vehicle could also have one cylinder that is not firing or a problem with missing exhaust or the catalytic converter.
an ostrich
1995 concorse is making a ticking noise under the glove compartment
Tensioner pulley for the water pump belt on the opposite side of the motor the other side, not the side with the surpentine belt.
Could be a bad wheel speed sensor.
motor mount
I have a 2002 deVille and all I hear is a little road noise (tires). The engine growls only when "pushed". It's a beautiful thing
my 1995 BMW 325i is making a knocking noise after i replace the water pump
If the sound is a loud growling , whining, noise you're probably low on power steering fluid. Now the cause of the fluids loss is WHERE ?
The a/c clutch needs to be replaced or repaired.
Check all your accessories pulled by the belt. There are a lot of bearings in these accessories that can cause the " chirping noise".
I had the same problem, with the same make/year. You need to replace your hub/hubs. I replace only the one on the driver side front but it's recommended that you replace both at the same time. It's quite easy to do I did it myself.