Cadillac cts User Manual

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AUTOMATIC OVERDRIVE (D): This position is 
for normal driving. If you need more power for passing,
and you’re:
D Going less than 35 mph (55 km/h), push the
accelerator pedal about halfway down.
D Going about 35 mph (55 km/h) or more, push the
accelerator all the way down.
The transmission will shift down to a lower gear and
have more power.
NOTICE:
If your vehicle seems to start up rather slowly, or
if it doesn’t seem to shift gears as you accelerate,
something may be wrong with a transmission
system sensor. If you drive very far that way,
your vehicle can be damaged. So if this happens,
have your vehicle serviced right away. Until then,
you can use FOURTH (4) when you are driving
less than 35 mph (55 km/h) and AUTOMATIC
OVERDRIVE (D) for higher speeds.
FOURTH (4): This position is also used for normal
driving, however, it offers more power and lower fuel
economy than AUTOMATIC OVERDRIVE (D).
Here are examples for using FOURTH (4) instead of
AUTOMATIC OVERDRIVE (D).
D When driving on hilly, winding roads.
D When going down a steep hill.
THIRD (3): This position gives you more power. You
can use THIRD (3) on hills. It can help control your
speed as you go down steep mountain roads, but then
you would also want to use your brakes off and on.
If the shift lever is put into THIRD (3), the transmission
won’t shift into THIRD (3) until the vehicle is moving
slowly enough.