1999 Cadillac Catera Owner's Manual - Page 138

yellowblue Automatic Transmission Warning Light (If Equipped) This light comes on briefly when the ignition is turned on. If the light remains on or lights up while driving, there may be a fault in the automatic transmission. Have your vehicle serviced. Do not drive your vehicle when this light is on. The rear of your vehicle is too low and part of the body or the rear axle may be damaged when driving over bumpy roads. When the light goes out, leveling is complete. This procedure is automatic -- you don't have to do anything. If the light comes on flashing, there may be a problem with the leveling system. You should reduce your vehicle speed and have your vehicle serviced soon. Brake Pad Wear Indicator Light Leveling Indicator Light This light comes on steady when the rear load level in your vehicle changes. This light comes on when the brake pads on your vehicle have significantly worn. The pads will have to be replaced, so have your vehicle serviced soon. 2-76