grinding when turning onto highway

does anyone know what this could be, when I turn onto the hwy it feels like the truck is in 4 wheel drive, grabbing the rd. however it is not, we have checked all the wheels, ball joints,ti rod ends, and universals. Any ideas???

 

Best solution would be to just turn back off the highway and take back roads.

 

yep,everything is tight it doesn'tmake the noise if going straight or making a turn on the highway, only when pulling out or turning into a street.

 

I think it is coming from the back. I just had the truck serviced with all the lubes changed. Does aTRD have positrac??

 

07 sports have a limited slip diff with a mechanical clutch pack.

If you had the lube changed but they didn't add the friction modifier to the lube, that can cause problems.