GMC Cadillac CT5 2021 Manual page 389

388 SERVICE AND MAINTENANCE
(10) Or every 10 years, whichever
comes first. See Gas Strut(s) 0 331.
(11) Replace air conditioning
desiccant every seven years.
Special Application
Services
Severe Commercial Use Vehicles
Only: Lubricate chassis components
every oil change.
Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior Care 0 371.
Additional Maintenance
and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional maintenance
services may be required.
It is recommended that your dealer
perform these services
dealer technicians know your vehicle
best. Your dealer can also perform a
thorough assessment with a
multi-point inspection to recommend
when your vehicle may need
attention.
The following list is intended to
explain the services and conditions to
look for that may indicate services are
required.
Battery
The 12-volt battery supplies power to
start the engine and operate any
additional electrical accessories.
To avoid break-down or failure to
start the vehicle, maintain a battery
with full cranking power.
Trained dealer technicians have the
diagnostic equipment to test the
battery and ensure that the
connections and cables are
corrosion-free.
Belts
Belts may need replacing if they
squeak or show signs of cracking or
splitting.
Trained dealer technicians have
access to tools and equipment to
their trained
inspect the belts and recommend
adjustment or replacement when
necessary.
Brakes
Brakes stop the vehicle and are crucial
to safe driving.
Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
Trained dealer technicians have
access to tools and equipment to
inspect the brakes and recommend
quality parts engineered for the
vehicle.
Fluids
Proper fluid levels and approved fluids
protect the vehicle s systems and
components. See Recommended Fluids
and Lubricants 0 391 for GM approved
fluids.
Engine oil and windshield washer
fluid levels should be checked at
every fuel fill.
Instrument cluster lights may come
on to indicate that fluids may be
low and need to be filled.
Hoses
Hoses transport fluids and should be
regularly inspected to ensure that
there are no cracks or leaks. With a