2007 Cadillac STS Owner's Manual - Page 120

If your vehicle has the V6 engine and 5-speed transmission, when shifting manually, the number displayed on the Driver Information Center (DIC) indicates the highest gear allowed (1,2,3,4,5). If First (1) or Second (2) gear is selected, the transmission will stay in that gear. If a higher gear position is selected, the transmission will automatically shift between the Second (2) gear position up to the selected gear. If your vehicle has the V8 engine and 6-speed transmission, when shifting manually, the number displayed on the Driver Information Center (DIC) indicates the gear that the transmission is in. When starting the vehicle from a stopped condition, only First (1) and Second (2) gear may be used. While using the DSC feature the vehicle will have firmer shifting and increased performance. You can use this for sport driving or when climbing/descending hills to stay in gear longer or to down shift for more power or engine braking. The transmission will only allow you to shift into gears appropriate for the vehicle speed and engine Revolutions Per Minute (RPM). The transmission will not automatically shift to the next higher gear if the engine RPM is too high. If shifting is prevented for any reason, the selected gear will flash multiple times, indicating that the transmission has not shifted gears. The transmission will allow you to shift to the gear selected and will automatically downshift when the vehicle comes to a stop. This will allow for more power during take-off and passing. 120