I have 2005 CTS with 68000 miles that has been drinking oil like a drunk sailor for the past 1 1/2 years at the rate of 2 qts every 1000 miles!
The dealership tried to charge me in excess of $5500 to fix the problem which included new piston rings and an assortment of other "fixes". Since my warrenty of 6yr/100000 was no longer valid the dealership will now "only" charge me about $1400.
I stated my disappointment to them about how can a "high" quality GM car have such problems at such a low milage to which their reply was: "not all the vehicles that cadillac produces will be flawless...every now and then you might get a flawed one"...
Never again will I be a cadillac buyer.
Cadillac-Fix the powertrain issues at your own cost!