Rear end sagging

[my_03GT]

Like the title says looking at the back of my car, I noticed that the drivers side is sitting lower than the passenger side... It is quite noticable, and I have no idea where to start. The car drives fine, no noises. I have not installed anything on the rear of the car..ie. suspension mods what so ever. The only thing ever topuched on the rear end since getting the car is 3'73 gears. Any ideas on what to look for, car is an 03 Gt with me as the only owner/driver.

 

[DBMSTNG]

stupid question but, was the car sitting on a perfectly flat surface when you noticed it?

 

[my_03GT]

yea it was in my garage..I thought the same thing, garage is flat though

 

[RedDaemon]

take the dead body out of the back

 

[TL1000S]

Check and make sure you didn't lose a rear isolator. Seriously, put a level down and make sure the floor is flat, then put one on the trunk of the car. The stock shocks suck, I blew mine out at 15k miles, they were leaking like a stuck pig. If that's the case, get yourself a set of Strange Engineering 10-way adjustables, they are $65 each and the best investment