Engine help

[Sarge91]

This may sound strange, but here it goes...

My car sound like it has a supercharger.. but i don't. At first i thought it was transmission wind, but it isn't, i put it in 'N' and 'P' and when u rev it some, it will start to sound like a supercharger, and we all know what that sounds like, my check engine light came on maybe a few weeks after i noticed this. Im wondering what it could be, the real reason i asked, is when i was backing in my inclined driveway a few mins ago, while the winding sound accrued, it sounded like something was scraping in the engine, so bad, i could feel the vibration in the gas peddle. I also still have GM warranty, so i am going to call in the next day or so. Just wanted some ppl that know theses cars input.

Thanks

[Sarge91]

Going to bed BUMP

[sunsetorangess]

Post up the sound its making and we can help you further..
Any mods?
Loose vacum line? Bad bearings in pully? small exhaust leak? the list goes on and on. A sound clip would help up a bunch..
J