Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
250 VEHICLE CARE
Caution
Use of the incorrect automatic
transmission fluid may damage the
vehicle, and the damage may not be
covered by the vehicle warranty.
Always use the correct automatic
transmission fluid. See
Recommended Fluids and Lubricants
0317.
Change the fluid and filter at the
intervals listed in Maintenance
Schedule 0308, and be sure to use the
fluid listed in Recommended Fluids and
Lubricants 0317.
Engine Air Cleaner/Filter
The engine air cleaner/filter is in the
engine compartment on the passenger
side of the vehicle for the 2.0L L4
engine and in the center of the engine
compartment for the 3.0L V6 engine.
See Engine Compartment Overview
0 243.
When to Inspect the Engine Air
Cleaner/Filter
For intervals on inspecting and
replacing the engine air cleaner/filter,
see Maintenance Schedule 0308.
How to Inspect/Replace the
Engine Air Cleaner/Filter
Do not start the engine or have the
engine running with the engine air
cleaner/filter housing open. Before
removing the engine air cleaner/filter,
make sure that the engine air cleaner/
filter housing and nearby components
are free of dirt and debris. Do not
clean the engine air cleaner/filter or
components with water or
compressed air.
To inspect or replace the air cleaner/
filter:
2.0L L4 Engine
1. Remove the five screws on top of the air cleaner/filter cover.
2. Lift the air/cleaner/filter cover away from the air cleaner/filter
housing.
3. Pull out the air cleaner/filter.
4. Inspect or replace the air cleaner/filter.
5. Reverse Steps 1–3 to reinstall the air cleaner/filter cover.
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
294 VEHICLE CARE
3. Set the parking brake firmly andput the vehicle in P (Park) with
an automatic transmission,
or Neutral with a manual
transmission.
Caution
If any accessories are left on or
plugged in during the jump starting
procedure, they could be damaged.
The repairs would not be covered
by the vehicle warranty. Whenever
possible, turn off or unplug all
accessories on either vehicle when
jump starting.
4. Turn the ignition off. Turn off all lights and accessories in both
vehicles, except the hazard
warning flashers if needed.
{Warning
An electric fan can start up even
when the engine is not running and
can injure you. Keep hands,
clothing, and tools away from any
underhood electric fan.
{Warning
Using a match near a battery can
cause battery gas to explode. People
have been hurt doing this, and
some have been blinded. Use a
flashlight if you need more light.
Battery fluid contains acid that can
burn you. Do not get it on you.
If you accidentally get it in your
eyes or on your skin, flush the place
with water and get medical help
immediately.
{Warning
Fans or other moving engine parts
can injure you badly. Keep your
hands away from moving parts
once the engine is running.
5. Connect one end of the red positive (+) cable to the remote
positive (+) terminal on the
discharged battery.
6. Connect the other end of the red positive (+) cable to the
positive (+) terminal of the good
battery.
7. Connect one end of the black negative (–) cable to the
negative (–) terminal of the good
battery.
Do not let the other end touch
anything until the next step. The
other end of the negative (–)
cable does not go to the dead
battery. It goes to a heavy,
unpainted metal engine part.
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
SERVICE AND MAINTENANCE 309
.Check tire inflation pressures. See
Tire Pressure 0279.
. Inspect tire wear. See Tire
Inspection 0285.
. Visually check for fluid leaks.
. Inspect brake system. See Exterior
Care 0297.
. Visually inspect steering,
suspension, and chassis
components for damage, including
cracks or tears in the rubber boots,
loose or missing parts, or signs of
wear at least once a year. See
Exterior Care 0297.
. Inspect power steering for proper
attachment, connections, binding,
leaks, cracks, chafing, etc. .
Visually inspect halfshafts and
drive shafts for excessive wear,
lubricant leaks, and/or damage
including: tube dents or cracks,
constant velocity joint or universal
joint looseness, cracked or missing
boots, loose or missing boot
clamps, center bearing excessive
looseness, loose or missing
fasteners, and axle seal leaks.
. Check restraint system
components. See Safety System
Check 057.
. Visually inspect fuel system for
damage or leaks.
. Visually inspect exhaust system
and nearby heat shields for loose
or damaged parts. .
Lubricate body components. See
Exterior Care 0297.
. Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check 0261.
. Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
. Visually inspect gas strut for signs
of wear, cracks, or other damage.
Check the hold open ability of the
strut. If the hold open is low,
service the gas strut. See Gas
Strut(s) 0262.
. Inspect sunroof track and seal,
if equipped. See Sunroof037.
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 317
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name or specification, including fluids or lubricants not listed here, can be
obtained from your dealer.Usage Fluid/Lubricant
Automatic Transmission DEXRON ULV Automatic Transmission Fluid. Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See
Cooling System 0251.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade.
ACDelco dexos1 full synthetic is recommended. See Engine Oil0246.
Hood Latch Assembly, Secondary Latch,
Pivots, Spring Anchor, and Release Pawl Lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid.
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube. See your dealer.
Rear Axle/Front Axle (All-Wheel Drive) See your dealer. Transfer Case (All-Wheel Drive) See your dealer. Windshield Washer Automotive windshield washer fluid that meets regional freeze protection
requirements.
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
322 TECHNICAL DATA
ApplicationCapacities
Metric English
Rear Axle Open Differential - Small 0.75 L 0.79 qt
Open Differential - Large 1.0 L 1.0 qt
Mechanical Limited Slip 1.0 L 1.0 qt
Electronic Limited Slip 1.5 L 1.5 qt
Fuel Tank 66.0 L 17.5 gal
Transfer Case –AWD 0.80 L 0.85 qt
Wheel Nut Torque 190 Y140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual.
Recheck fluid level after filling.
*Engine cooling system capacity values are based on the entire cooling system and its components.
Engine Specifications
Engine VIN CodeTransmission Spark Plug Gap
2.0L L4 Engine (LSY) KAutomatic0.65–0.75 mm (0.025–0.029 in)
3.0L V6 Engine (LGY) WAutomatic0.65–0.75 mm (0.025–0.029 in)
Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended and can damage the
spark plug.
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
348 INDEX
Automatic (cont'd)Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Emergency Braking (AEB) . . . . . . . . 216
Headlamp System . . . . . . . . . . . . . . . . 136
Transmission . . . . . . . . . . . . . . . . . . . . . . 173
Transmission Fluid . . . . . . . . . . . . . . . 249
Vehicle Hold Light . . . . . . . . . . . . . . . . 111
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . 178
Automatic Vehicle Hold (AVH) . . . . 182
B
Battery Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Load Management . . . . . . . . . . . . . . . . 139
Power Protection . . . . . . . . . . . . . . . . . . 140
Battery - North America . . . . . .259, 292
Blade Replacement, Wiper . . . . . . . . . 261
Brake Electric Boost . . . . . . . . . . . . . . . . . . . . . 180
Parking, Electric . . . . . . . . . . . . . . . . . . 180
System Warning Light . . . . . . . . . . . . 110
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 Braking (cont'd)
Automatic Emergency (AEB) . . . . . 216
Braking System Front Pedestrian (FPB) . . . . . . . . . . . 218
Break-In, New Vehicle . . . . . . . . . . . . . . 163
Bulb Replacement Headlamp Aiming . . . . . . . . . . . . . . . . 263
Buying New Tires . . . . . . . . . . . . . . . . . . . 287
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . 240
California Proposition 65 Warning . . . . . . . . . . . . .239, 259, 292, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . 2
Capacities and Specifications . . . . . . 321
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . 172
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Winter Driving . . . . . . . . . . . . . . . . . . . . 158
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Caution, Danger, and Warning . . . . . . . . 3
Center Console Storage . . . . . . . . . . . . . . 91
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 291 Charging
Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Charging System Light . . . . . . . . . . . . . 107
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 108
Child Restraints
Infants and Young Children . . . . . . . . 72
Lower Anchors and Tethers forChildren . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Older Children . . . . . . . . . . . . . . . . . . . . . . 70
Securing . . . . . . . . . . . . . . . . . . . . . . . . .84, 86
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 265
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . 297
Interior Care . . . . . . . . . . . . . . . . . . . . . . 302
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . . . . 142
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Cluster, Instrument . . . . . . . . . . . . . . . . . 101
Collision Damage Repair . . . . . . . . . . . 331
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Competitive Driving Mode . . . . . . . . . 191
Composite Materials . . . . . . . . . . . . . . . . 163
Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
350 INDEX
E
Electric Brake Boost . . . . . . . . . . . . . . . . 180
Electric Parking Brake . . . . . . . . . . . . . . 180
Electric Parking Brake Light . . . . . . . 110
Electrical Equipment, Add-On . . . . . 236
Electrical SystemEngine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Fuses and Circuit Breakers . . . . . . . 265
Instrument Panel Fuse Block . . . . 267
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 250
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 108
Compartment Overview . . . . . . . . . . 243
Coolant Temperature Gauge . . . . . 105
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 113
Cooling System . . . . . . . . . . . . . . . . . . . 251
Drive Belt Routing . . . . . . . . . . . . . . . . 323
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Oil Life System . . . . . . . . . . . . . . . . . . . . 248 Engine (cont'd)
Oil Pressure Light . . . . . . . . . . . . . . . . . 115
Overheating . . . . . . . . . . . . . . . . . . . . . . . 256
Power Messages . . . . . . . . . . . . . . . . . . 123
Running While Parked . . . . . . . . . . . 173
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 139
Equipment, Towing . . . . . . . . . . . . . . . . . 235
Event Data Recorders . . . . . . . . . . . . . . 336
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 139
Extended Parking . . . . . . . . . . . . . . . . . . . 172
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 57
Exterior Lamp Controls . . . . . . . . . . . . 133
Exterior Lamps Off Reminder . . . . . . 135
Exterior Lighting Battery Saver . . . . 140
F
Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . 250
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 135
Flashers, Hazard Warning . . . . . . . . . . 136
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Fluid Automatic Transmission . . . . . . . . . 249
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 30 Forward Collision Alert (FCA)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Front Seats
Heated and Ventilated . . . . . . . . . . . . . 46
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Economy, Driving for Better . . . . . 149
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 229
Filling the Tank . . . . . . . . . . . . . . . . . . . 228
Foreign Countries . . . . . . . . . . . . . . . . . 227
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Low Fuel Warning Light . . . . . . . . . 115
Management, Active . . . . . . . . . . . . . . 172
Prohibited Fuels . . . . . . . . . . . . . . . . . . 227
Recommended . . . . . . . . . . . . . . . 226, 227
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Fuses Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Fuses and Circuit Breakers . . . . . . . 265
Instrument Panel Fuse Block . . . . 267
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270