I always brought my Cadillac DTS to the dealer and was overcharged and many times my problem was not resolved. A few years ago I was told about Deece, who my sister told me specialized in Cadillacs. He was previously a Cadillac mechanic. I brought my car in there for the battery to be checked and he did extensive testing on it and didn't even charge me. I also had my brakes done, and he was substantially cheaper than the dealer also using all Cadillac parts. He is very reasonable and truly, the most honest mechanic I've dealt with. I have the GM Protection Plan and he also honors that plan as well. It's very seldom you find a mechanic that truly takes the time to talk to you and you feel confident that the work is 100%. I will always bring my car to Deece and I highly recommend him. He is conveniently located near the The Berwyn BNSF train station & the Lavergne BNSF stop. You can drop your car off and walk to either. Makes it very convenient if you work downtown.