I have a 2003 cts, it is making a loud growling sound coming from the rear of the car. Either low lube in diff? CV Joints going bad? Is replacing the cv joints costly? It appears there are no leaks of lube or tranny fluid.
thank you

 

The differentials in these cars are known to have durability issues....that's the first thing I would suspect.

 

Any of the solid review about this problem?i am also want to know proper about it,anyone knows well about it so please reply us to solve this issue.I am so worried about it.Thanks in advance.