2005 Cadillac CTS Owner's Manual - Page 304

How to Reset the Change Transmission Fluid Message and the Transmission Fluid Indicator (Automatic Transmission) After the transmission fluid has been changed, the Change Trans Fluid message and the transmission fluid life indicator must be reset. To reset the message and indicator, use one of the following procedures: Navigation System If your vehicle has a navigation system, see your navigation system supplement for instructions on how to acknowledge the Change Trans Fluid message and reset the transmission fluid life indicator. Manual Transmission Fluid When to Check It is not necessary to check the manual transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to your Cadillac dealership service department and have it repaired as soon as possible. The fluid level may be checked when the engine oil is changed, though it is not necessary to regularly check the fluid level. Base Audio System Press the CLR button located to the right of the DIC display to acknowledge the CHANGE TRANS FLUID message. This will clear the message from the display and reset it. To reset the transmission fluid life indicator, use the following steps: 1. Press the up or down arrow on the INFO button located to the right of the DIC display to access the DIC menu. 2. Once the XXX% TRANS FLUID LIFE menu item is highlighted, press and hold the CLR button. The percentage will return to 100, and the transmission fluid life indicator will be reset. 3. Repeat the steps if the percentage does not return to 100. How to Check Because this operation can be difficult, you may choose to have this done at your Cadillac dealership service department. If you do it yourself, be sure to follow all the instructions here, or you could get a false reading. 5-24