2004 Cadillac CTS Owner's Manual - Page 186

Change Trans (Transmission) Fluid (Automatic Transmission) This symbol appears with the Change Trans Fluid message. Check Brake Fluid This symbol appears with the Check Brake Fluid message. This message indicates that the life of the transmission fluid has expired and it should be changed within 200 miles. See Scheduled Maintenance on page 6-4 and Recommended Fluids and Lubricants on page 6-13 for the proper fluid and change intervals. When you reset the Change Trans Fluid message by clearing it from the display, you still must reset the transmission fluid life monitor separately. For more information on resetting the transmission fluid life monitor, see Automatic Transmission Fluid on page 5-24. This message will display if the ignition is in ON to inform the driver that the brake fluid level is low. Have the brake system serviced by a technician as soon as possible. See Brake System Warning Light on page 3-39 for more information. 3-64