Can someone recommend a dealer in SA to fix gear whine?

I've had the rear-end worked on twice already at Vara Chevrolet and the whine is still there between 60-70. They replaced the gears and bearings already. Any recommedations on another dealer to fix it?

Gunn Pontiac off of I-35 near Judson/Converse.

I second the Gunn notion. they fixed my rear end once already with no questions asked and they covered it under my warranty.
It wouyld have cost me over $1000.00 but it was free!

Go to Gunn, request that Ryah Ahart work on your car. Talk to Mike at the service counter if you can, and tell him Scott with the silver firebird sent you. Problem solved. :D

Scott