Funny sound, maybe the tranny?

[98Hatch]

so im pulling out of wawa at 2am and stick my car in reverse and as i start to back up my car starts to hum from the passenger side wheel well. when i aply pressure to the break it becomes real high pitched and then fades out, sounds like its coming from inside the car, but i know its not. friend i mine said it might be the tranny but 1st-5th gear is smooth with not a damn problem. Any ideas on what the hell this sound could be before i take it to get it checked out so i have some idea on what im dealing with?

seems like everytime something gets fixed it causes something else to go worng!

[GScivic7]

well, the hum might be the regular ole' hum every car has when you give the car a little gas in reverse. I think most people on here will know what i'm talking about. And the high pitch squeal could be worn brake pads. I really don't know what else to tell you.

[98Hatch]

it jsut starting humming about 4 nights ago, never did it before, as for the high pitch its not the pads i already check that...the humming becomes high pitched and fades out when i come to a complete stop

[GScivic7]

that is pretty odd...hopefully someone will be able to figure it out