I recently purchased a used 2008 Cadillac cts 3.6 di from a Cadillac dealer in Northern California. I know it's not a brand new V but one of the reasons I bought a Cadillac was for the service and experience you receive. This being a CPO Caddy it still has warranty. Driving home from the dealership I noticed a rather loud rattle coming from the rear deck. A rather common problem so I'm told. So the next day I drive back to see about getting it fixed. After about 2 weeks the finally call me back and say bring it in. On way to dealership an airbag light came on, so when I arrived I explained the situation. They had my car for 2 days fixed the lose wire that was causing the airbag light but told me they were having a hard time fixing the rattle/squeak. So over 2 days they put between 125-150 miles on my car and when I picked it up today it had under a quarter tank of gas. ( I dropped it off with more). Is that a normal thing, not replacing gas in a vehicle? If so how cheap! I am just confused I guess. They had my car for 2 days didn't fix rattle and used all my gas? Really glad I wasted 2 days waiting and had to leave work early to pick it up today.