I dropped my 2003 auto se1 grand am 125K highway miles off at the shop  this Friday and told/test drove with the mechanics to hear this combo of  a grinding/ dragging sound my baby makes ..

You can hear it best with you  foot off gas..

Noise more loud close to when it should up or down shift..  most audible between 10-35 mph....

ALSO YOU CAN FEEL IT like a vibration  under driver and passenger feet....

Like the top of a T..... not constant..  

But more and more often...(no tranny fluid leaking, no real noticable  tranny misbehavior... .. NOW, they kept swearing it was the wheel bearing  so I let them replace it but KNEW they were wrong....

#1 I drove it 10  feet after they "fixed it" and it was STILL MAKING THE NOISE AND #2 THEY  CHARGED ME 400+ TO CHANGE 1 FRONT WHEEL BEARING (robbery)...

 So I have to  go pick my car up and get it to someone....

WHAT IS THIS noise and  vibration/ what could it be?????? Here are some fact s that may make a  difference: I had the same people I am worried about do a tranny flush last month( wrong fluid??) also they  "replaced shocks/ struts"(loose??).. and in aug new brakes.. 
 
  What could it be ? I heard the terms (from sister) spider gears,,, shift  differential, drive line component, transmission,motor /tranny mounts..  gosh ANY Help i WILL BE SOOOO GRATEFUL!!!!! 

Whatever it is, that shop should fix it... I'd at least go back there and make them account for why they charged you $400 and why your car still isn't fixed. 
 
That'd be a small claims court deal it it was me. 
 
Hold the first shop's feet to the fire.... 
 
Let me know what they say. 
 
Richard 

I’m thinking they didn't have the expertise to diagnose the problem..  and tried to pass it off  as just the wheel bearing and for a Timken wheel bearing they charged 327.99 with a 65.00 discount to end up charging 262.99 not 119.00  for the bearing like the same part number and all at AutoZone..

labor took like 15 minutes and they charged 2 hours....

so i went and got the car, took it  to a  different tranny shop,  took owner for  test ride, and  he even seems a bit confused..

wondering if this is an odd problem......not usual....

will try to ask first shop owner again to rectify that overbilling or billing in general......

but they just keep saying well it needed a wheel bearing too.......so that work was necessary and correct they said......

(but I think the wheel bearing was old but fine for now)...

new guy is looking at possible cracked but not yet fully broken sway bar... or ??? he's a bit stymied too...

have one more place to take it...

wish me luck and thanks for responding it's very appreciated!!!

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The fact remains that the first shop didn't repair your concern but charged you a lot of money.  That's irritating.

IT really is!!!!!!!!!!!!!!!!!! I went back and they told me they can charge whatever mark up they like for their parts...

and that I AGREE TO CHANGE THE PART SO I owe....( but why wouldn't I agree I thought they were experts).. and paid.....

may the good lord take care of them at a later date.....or sooner....lolol......

going to write a few letters and it the AG office..

to try to get at least 100 back....car is at another shop now running tests and told me  they'd let me know in the am...

the Irish say "may the cat eat you and the devil eat the cat"... I may put that on a Christmas card and send it to the buggers... I'll let cha know what this new shop says.....