While driving a squealing noise comes from the front glove box area, thought at first it was the blower motor but turned that off and it still persists, the squeal or wine gets higher pitched as the the speed goes up, some times the noise stops but comes back a few seconds later. the noise finally stop at very slow speed. it doesn't change with rpm's only forward movement.

motor is loose and fan is rubbing on housing.. need to fix or it will burn the motor out..

I had a 2003 caddy dts same issue the blower motor has probably gone bad u can order them online. What u can also try is kicking under the passenger side glove box area that's where the blower is located sometimes they get stuck. Try kicking or tapping under there and see if it pops on. I did this with my car

The blower motor should be on the passenger side under the glove box. The noise is probably the bearing in the motor.

I'm lost here.
You have a noise around or behind the glove box. And you say you have filled and bled the system.
The cooling system ??
How would the cooling system produce a noise in the cabin ?
Could the noise be the blower motor ?
Or something loose behind the glove box ? Does the noise happen when you are driving, or sitting still, or both ?

Your blower motor is probably in that area. Does it vary with blower fan speed?

Check owners manual for location of heater blower motor front,check with a test light,if it's good locate blower motor under glove box and test the two wires for power when switch is turned on,if power is present motor needs changed.if no power check blower motor resister.

blower motor needs replacing

you need to remove your glove box assy.(beleave only 2 screws and pivot clips) make sure its not anything from glove box that has slipped behind. once box is out uf way you can access easier the blower motor assy. it actually attaches into blower box from bottom side. when looking at you will find three screw/bolts fastening motor to casing. remove those and then slowly lower motor and fan cage(attached to motor shaft) out from housing. sometimes it takes a little convincing to come out but not real tough. once out you most likely find the object causing noise in fan cage or resting up on lip area of housing unit. once found install in reverse order. let me know if this helps or if we need to dig a little deeper into! good luck!
joel

open glove box and make sure that none of the papers from that can get down to blower motor

It is behind the glove box. There are a few screws/retaining clips at the bottom of the glove box on the outside. You then open the glove box and remove a few more screws. Once the glove box is out, it will be obvious where the blower motor is. It's the only big round thing down there. lol If you are still unsure, turn it on and listen/feel for it.

I hope this helps.

Duane