Cadillac 2012 CTS Owner's Manual page 424

Replace the wiper blades if they
are worn or damaged. Damage
can be caused by extreme dusty
conditions, sand, salt, heat, sun,
snow, and ice.
Apply silicone grease on
weatherstrips to make them last
longer, seal better, and not stick or
squeak. See
Use a stiff brush with tire cleaner to
clean the tires.
Use a soft, clean cloth with mild
soap and water to clean the wheels.
After rinsing thoroughly with clean
water, dry with a soft, clean towel.
A wax may then be applied.
Keep the wheels clean using a soft,
clean cloth with mild soap and
water. Rinse with clean water. After
rinsing thoroughly, dry with a soft,
clean towel. A wax may then be
applied.
Visually inspect front and rear
suspension and steering system for
damaged, loose, or missing parts
or signs of wear. Inspect power
steering lines and hoses for proper
hook-up, binding, leaks, cracks,
chafing, etc. Visually check constant
velocity joints, rubber boots, and
axle seals for leaks.