2004 Cadillac CTS Owner's Manual - Page 311

Navigation System Press the multi-function button located to the right of the DIC display, next to the OK prompt 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. Turn the system on by pressing the PWR/VOL knob once. The PWR/VOL knob is located to the lower left of the DIC display. 2. Press the INFO button located to the left of the DIC display to access the Vehicle Info (Information) menu. 3. Turn the TUNE/SEL knob located to the lower right of the DIC display until Trans Fluid Life is highlighted. Press the knob once to select it. 4. Once XXX% Trans Fluid Life is displayed, press the multi-function button next to the Reset prompt in the upper right corner of the display. The percentage will return to 100, and the transmission fluid life indicator will be reset. 5. Repeat the steps if the percentage does not return to 100. Manual Transmission Fluid When to Check A good time to have it checked is when the engine oil is changed. However, the fluid in your manual transmission doesn't require changing. 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. Notice: Too much or too little fluid can damage your transmission. Too much can mean that some of the fluid could come out and fall on hot engine part or exhaust system parts, starting a fire. Too little fluid could cause the transmission to overheat. Be sure to get an accurate reading if you check your transmission fluid. 5-25