One problem related to clutch has been reported for the 2005 Cadillac CTS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Cadillac CTS based on all problems reported for the 2005 CTS.
I have a 2005 Cadillac Cts-v with 17800 miles. It has developed a whine in the rear differential. Upon investigating further, I found this has not been unusual for this model. (gm has used the same differential in this car as they put in the base Cts model, which has significantly less torque) upon taking the car to the gm dealer, they said they would have to replace the differential, but would have to await parts to do so. They are to call me when they get the parts in stock. They also said the clutch has been updated and have ordered a new clutch also.