Service Intervals

All Cadillacs with 4.6L Northstar engine and 4T80-E transaxle are equipped with a transaxle fluid change indicator. A CHANGE TRANS FLUID message will display on the Information Center when the powertrain computer determines that the transaxle fluid needs to be changed, or at each 100,000 miles (160,000 km) interval, whichever occurs first. Change fluid by removing lower pan and side cover drain plug.