Cadillac 2010 CTS Sport Sedan Owner's Manual page 333

Park on a fairly steep hill, with the
vehicle facing downhill. Keeping
your foot on the regular brake,
set the parking brake.
To check the parking brake's
holding ability: With the engine
running and the transmission in
N (Neutral), slowly remove foot
pressure from the regular brake
pedal. Do this until the vehicle is
held by the parking brake only.
To check the P (Park)
mechanism's holding ability:
With the engine running, shift to
P (Park). Then release the
parking brake followed by the
regular brake.
Contact your dealer/retailer if
service is required.
Windshield wiper blades should be
inspected for wear or cracking.
See
.
It is a good idea to clean or replace
the wiper blade assembly on a
regular basis or when worn. For
proper windshield wiper blade
length and type, see
To replace the wiper blade
assembly:
1. Turn the ignition to ON/RUN with
the engine off.
2. Turn on the windshield wipers
and turn them off again when
the wipers are in the out-wipe
position. The driver side blade
will be straight up and down on
the windshield.
3. Pull the windshield wiper
assembly away from the
windshield.
.
4. Lift up the wiper blade
assembly cap.
5. Pull the wiper blade assembly
down far enough to release it
from the J-hooked end of the
wiper arm. Slide the assembly
away from the arm.
Allowing the wiper blade arm
to touch the windshield when
no wiper blade is installed
could damage the windshield.
Any damage that occurs would
not be covered by your warranty.
Do not allow the wiper blade arm
to touch the windshield.