To get the oil changed. But also to see if they can find out my rear end howl at the 40-50 mph range. I have noticed it has gotten better with the warmer weather but is still there. It has done it since day one. Maybe if it the gears they will replace my 3.21 with 4.10 if i pay the difference. Because i do have 20" wheels. I will let you guys know.

 

There was a thread here about a guy getting his gears replaced under warranty. He tried to get the dealer to install a different ratio but they wouldn't hear of it. They said it has to be the exact part or there is no warranty coverage at all.

Give it a shot though, maybe your dealer could work something out. Some (very few) dealers are pretty cool.