Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
308 SERVICE AND MAINTENANCE
Maintenance Schedule
Owner Checks and Services
Check the engine oil level. SeeEngine
Oil 0246.
Once a Month
. Check the tire inflation pressures.
See Tire Pressure 0279.
. Inspect the tires for wear. See Tire
Inspection 0285.
. Check the windshield washer fluid
level. See Washer Fluid 0257.
Engine Oil Change
When the CHANGE ENGINE OIL
SOON message displays, have the
engine oil and filter changed within
the next 1 000 km (600 mi). If driven
under the best conditions, the engine
oil life system may not indicate the
need for vehicle service for up to a year. The engine oil and filter must be
changed at least once a year and the
oil life system must be reset. Your
trained dealer technician can perform
this work. If the engine oil life system
is reset accidentally, service the
vehicle within 5 000 km (3,000 mi)
since the last service. Reset the oil life
system when the oil is changed. See
Engine Oil Life System
0248.
Air Conditioning Desiccant
(Replace Every Seven Years)
The air conditioning system requires
maintenance every seven years. This
service requires replacement of the
desiccant to help the longevity and
efficient operation of the air
conditioning system. This service can
be complex. See your dealer.
Tire Rotation and Required
Services Every 12 000 km
(7,500 mi)
Rotate the tires, if recommended for
the vehicle, and perform the following
services. See Tire Rotation0285.
. Check engine oil level and oil
life percentage. If needed,
change engine oil and filter,
and reset oil life system. See
Engine Oil 0246 and
Engine Oil Life System 0248.
. Inspect the engine air cleaner
filter. See Engine Air Cleaner/Filter
0 250.
. Check engine coolant level. See
Cooling System 0251.
. Check windshield washer fluid
level. See Washer Fluid 0257.
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
310 SERVICE AND MAINTENANCE
Maintenance Schedule
Additional Required Services -
Normal12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires, if recommended for the vehicle, and
perform Required Services. (1) Check engine oil level
and oil life percentage. Change engine oil and filter,
if needed.@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (2)@ @@@@@
Inspect evaporative control system. (3)@ @@
Replace engine air cleaner filter. (4)@@@
Replace spark plugs. Inspect spark plug wires and/or
boots.@ @
Change transfer case fluid, if equipped with
AWD. (5)@
Change rear axle fluid, if equipped with limited slip
differential. (5)@@@
Change rear axle fluid, without limited slip
differential. (5)@
Change front axle fluid, if equipped with AWD. (5)@
Drain and fill engine cooling system. (6)@
Visually inspect accessory drive belts. (7)@
Replace brake fluid. (8)
Replace windshield wiper blades. (9)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas
struts. (10)@ @
Replace air conditioning desiccant. (11)
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
SERVICE AND MAINTENANCE 311
Footnotes—Maintenance Schedule
Additional Required Services -
Normal
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0285.
(2) Or every two years, whichever
comes first. More frequent passenger
compartment air filter replacement
may be needed if driving in areas with
heavy traffic, poor air quality, high
dust levels, or environmental
allergens. Passenger compartment air
filter replacement may also be needed
if there is reduced airf low, window
fogging, or odors. Your GM dealer can
help determine when to replace the
filter. (3)
Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition.
(4) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
See Engine Air Cleaner/Filter 0250.
(5) Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate
the transfer case fluid. Contaminated
fluid will decrease the life of the
transfer case and/or axles and should
be replaced.
(6) Or every five years, whichever
comes first. See Cooling System0251. (7)
Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(8) Replace brake fluid every five
years. See Brake Fluid 0258.
(9) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0261.
(10) Or every 10 years, whichever
comes first. See Gas Strut(s)0262.
(11) Replace air conditioning
desiccant every seven years.
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
312 SERVICE AND MAINTENANCE
Maintenance Schedule
Additional Required Services -
Severe12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires, if recommended for the vehicle, and
perform Required Services. (1) Check engine oil level
and oil life percentage. Change engine oil and filter,
if needed.@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (2)@ @@@@@
Inspect evaporative control system. (3)@ @@
Replace engine air cleaner filter. (4)@@@
Replace spark plugs. Inspect spark plug wires and/or
boots.@ @
Change automatic transmission fluid and filter.@@@
Change transfer case fluid, if equipped with
AWD. (5)@@@
Change rear axle fluid, if equipped with limited slip
differential. (5)@@@
Change rear axle fluid, without limited slip
differential. (5)@ @
Change front axle fluid, if equipped with AWD. (5)@@@
Drain and fill engine cooling system. (6)@
Visually inspect accessory drive belts. (7)@
Replace brake fluid. (8)
Replace windshield wiper blades. (9)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas
struts. (10)@ @
Replace air conditioning desiccant. (11)
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
SERVICE AND MAINTENANCE 313
Footnotes—Maintenance Schedule
Additional Required Services -
Severe
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0285.
(2) Or every two years, whichever
comes first. More frequent passenger
compartment air filter replacement
may be needed if driving in areas with
heavy traffic, poor air quality, high
dust levels, or environmental
allergens. Passenger compartment air
filter replacement may also be needed
if there is reduced airf low, window
fogging, or odors. Your GM dealer can
help determine when to replace the
filter.
(3) Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition.
(4) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
See Engine Air Cleaner/Filter 0250. (5)
Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate
the transfer case fluid. Contaminated
fluid will decrease the life of the
transfer case and/or axles and should
be replaced.
(6) Or every five years, whichever
comes first. See Cooling System0251.
(7) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(8) Replace brake fluid every five
years. See Brake Fluid 0258.
(9) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0261.
(10) Or every 10 years, whichever
comes first. See Gas Strut(s)0262.
(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
0 297.
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
318 SERVICE AND MAINTENANCE
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from your dealer.Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter 2.0L L4 Engine 84498926 A3245C
3.0L V6 Engine (Driver Side) 84335354 A3235C
3.0L V6 Engine (Passenger Side) 84335354 A3235C
Engine Oil Filter 2.0L L4 Engine 55495105 PF66
3.0L V6 Engine 19330000 PF63E
Passenger Compartment Air Filter Particulate 13508023 CF185
Carbon 23195727 CF184
Spark Plugs 2.0L L4 Engine 55504354 41-103-IP
3.0L V6 Engine 12650283 41-131
Wiper Blades Driver Side –60 cm (23.62 in) 84566977 —
Passenger Side –45 cm (17.72 in) 84574892 —
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
TECHNICAL DATA 321
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and Lubricants
0 317 for more information.
Application Capacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and charge amount, see the refrigerant label under thehood. See your dealer for more information.
Brake Fluid 0.4 L 0.4 qt
Engine Cooling System* 2.0L L4 Engine 10.4 L 11.0 qt
3.0L V6 Engine with Rear Wheel Drive 12.1 L 12.8 qt
3.0L V6 Engine with All-Wheel Drive 12.3 L 13.0 qt
3.0L V6 Engine Intercoolers 3.1 L 3.3 qt
Engine Oil with Filter 2.0L L4 Engine 5.0 L 5.3 qt
3.0L V6 Engine RWD 5.7 L 6.0 qt
3.0L V6 Engine AWD 6.2 L 6.5 qt
Front Axle 0.40 L 0.42 qt
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
INDEX 347
IndexA
Accessories and Modifications . . . . . 240
Accessory Power . . . . . . . . . . . . . . . . . . . . 169
Active Fuel Management . . . . . . . . . . . 172
Adaptive Cruise Control . . . . . . . . . . . . 195
Add-On Electrical Equipment . . . . . . 236
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . . 42
Thigh Support . . . . . . . . . . . . . . . . . . . . . . 43
Air Cleaner/Filter, Engine . . . . . . . . . . 250
Air Conditioning . . . . . . . . . . . . . . . . . . . . 142
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . . . . . 147
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
How Does an Airbag Restrain? . . . . . 63
Passenger Sensing System . . . . . . . . . 65
What Makes an Airbag Inflate? . . . . 63
What Will You See after anAirbag Inflates? . . . . . . . . . . . . . . . . . . . 63
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Where Are the Airbags? . . . . . . . . . . . . 60 Airbags
Adding Equipment to the
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Passenger Status Indicator . . . . . . . 107
Readiness Light . . . . . . . . . . . . . . . . . . . 106
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
System Check . . . . . . . . . . . . . . . . . . . . . . . 59
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . . 25
Alert
Lane Change . . . . . . . . . . . . . . . . . . . . . . 220
Rear Pedestrian . . . . . . . . . . . . . . . . . . . 213
Side Blind Zone (SBZA) . . . . . . . . . . 220
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 273
All-Wheel Drive . . . . . . . . . . . . . . . .179, 260
Antilock Brake System (ABS) . . . . . . 180 Warning Light . . . . . . . . . . . . . . . . . . . . 111
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Assistance Systems for Driving . . . . 214
Assistance Systems for Parking and Backing . . . . . . . . . . . . . . . . . . . . . . . 205
Auto Stop
Stop/Start System . . . . . . . . . . . . . . . . 166
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . . . . 31