So I had posted my engine on my 09 V sedan had grenaded. All coolant down cylinder 7 which is a common occurrence if the upgrade is not done. At 169000 miles I love this car, the guys at Texas speed are the bomb! Gotta new long block comin in with a few upgrades already done to it. Highly recommend Texas Speed for ALL you CTS-V needs, good people with tremendous LS knowledge😎😎😎