cooling CADILLAC CT5 2021 Owner's Guide

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
392 SERVICE AND MAINTENANCE
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 0322.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade.
ACDelco dexos1 full synthetic is recommended. See Engine Oil0316.
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 4 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-14584312) -
2021 - CRC - 11/23/20
TECHNICAL DATA 397
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and Lubricants
0 392 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*
I2.0L L4 Engine 10.4 L 11.0 qt
I3.0L V6 Engine with Rear Wheel Drive 12.1 L 12.8 qt
I3.0L V6 Engine with All-Wheel Drive 12.3 L 13.0 qt
I3.0L V6 Engine Intercoolers 3.1 L 3.3 qt

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
TECHNICAL DATA 399
ApplicationCapacities
Metric English
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 (0.026–0.030 in)
3.0L V6 Engine (LGY) WAutomatic0.65–0.75 mm (0.026–0.030 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-14584312) -
2021 - CRC - 11/23/20
424 INDEX
CheckEngine Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 103
Child Restraints Infants and Young Children . . . . . . . 67
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . . . . . 72
Older Children . . . . . . . . . . . . . . . . . . . . . 65
Securing . . . . . . . . . . . . . . . . . . . . . . . . 78, 80
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 334
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . . . . . . 372
Interior Care . . . . . . . . . . . . . . . . . . . . . . 377
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . . . . 202
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Cluster, Instrument . . . . . . . . . . . . . . 94, 96
Collision Damage Repair . . . . . . . . . . . 408
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Competitive Driving Mode . . . . . . . . . 247
Composite Materials . . . . . . . . . . . . . . . . 223
Compressor Kit, Tire Sealant . . . . . . . 362
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . 420
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 421 Connected Services (cont'd)
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 419
Connections Connected Services . . . . . . . . . . . . . . . 420
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Control of a Vehicle . . . . . . . . . . . . . . . . 210
Controls Steering Wheel . . . . . . . . . . . . . . . . . . . . 143
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . 26
Coolant Engine TemperatureGauge . . . . . . . . . . . . . . . . . . . . . . 100, 101
Engine Temperature Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Cooling System . . . . . . . . . . . . . . . . . . . . . 322
Cornering Lamps . . . . . . . . . . . . . . . . . . . 136
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . 136
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407
Coverage Explanations . . . . . . . . . . . . . 169
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . 249 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Cruise Control, Adaptive . . . . . . . . . . . 251
Cruise Control, Super . . . . . . . . . . . . . . . 260
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Customer Assistance . . . . . . . . . . . . . . . 403
Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403
Text Telephone (TTY) Users . . . . . 403
Customer Information Publications OrderingInformation . . . . . . . . . . . . . . . . . . . . . . 410
Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 401
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . 412
D
Damage Repair, Collision . . . . . . . . . . . 408
Danger, Warning, and Caution . . . . . . . . 2
Data Collection Infotainment System . . . . . . . . . . . . . 413
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413
Data Recorders, Event . . . . . . . . . . . . . . 412
Database Coverage
Explanations . . . . . . . . . . . . . . . . . . . . . . 169
Daytime Running Lamps (DRL) . . . 134
Defensive Driving . . . . . . . . . . . . . . . . . . . 210
Delayed Locking . . . . . . . . . . . . . . . . . . . . . 17
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Diagnostics Connected Services . . . . . . . . . . . . . . . 421
Differential, Limited-Slip . . . . . . . . . . . 249
Distracted Driving . . . . . . . . . . . . . . . . . . 209
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . 136

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
INDEX 425
DoorAjar Light . . . . . . . . . . . . . . . . . . . . . . . . . 113
Delayed Locking . . . . . . . . . . . . . . . . . . . 17
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . 17
Drive Belt Routing, Engine . . . . . . . . . 400
Drive Systems All-Wheel Drive . . . . . . . . . . . . . 237, 331
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Driver Assistance Systems . . . . . . . . . 275
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . .113, 116
Driver Mode Control . . . . . . . . . . . . . . . . 242
Driver Mode Control Light . . . . . . . . . 109
Driving Assistance Systems . . . . . . . . . . . . . . . 285
Better Fuel Economy . . . . . . . . . . . . . 209
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 301
Competitive . . . . . . . . . . . . . . . . . . . . . . . 247
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Hill and Mountain Roads . . . . . . . . 217
If the Vehicle is Stuck . . . . . . . . . . . . 219
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Loss of Control . . . . . . . . . . . . . . . . . . . . 212
Off-Road Recovery . . . . . . . . . . . . . . . . 212 Driving (cont'd)
Track Events and
Competitive . . . . . . . . . . . . . . . . . . . . . . 213
Vehicle Load Limits . . . . . . . . . . . . . . 219
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 217
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . . . . . 202
E
Electric Brake Boost . . . . . . . . . . . . . . . . 237
Electric Parking Brake . . . . . . . . . . . . . . 238
Electric Parking Brake Light . . . . . . . 106
Electrical Equipment, Add-On . . . . . 307
Electrical SystemEngine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Fuses and Circuit Breakers . . . . . . . 334
Instrument Panel Fuse Block . . . . 337
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 320
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 103 Engine (cont'd)
Compartment Overview . . . . . . . . . . 313
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 100, 101
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 109
Cooling System . . . . . . . . . . . . . . . . . . . 322
Drive Belt Routing . . . . . . . . . . . . . . . . 400
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Oil Life System . . . . . . . . . . . . . . . . . . . . 318
Oil Pressure Light . . . . . . . . . . . . . . . . . 110
Overheating . . . . . . . . . . . . . . . . . . . . . . . 326
Power Messages . . . . . . . . . . . . . . . . . . 123
Running While Parked . . . . . . . . . . . 231
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Engine Air Filter Life System . . . . . . 319
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 137
Equipment, Towing . . . . . . . . . . . . . . . . . 306
Event Data Recorders . . . . . . . . . . . . . . 412
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 138
Extended Parking . . . . . . . . . . . . . . . . . . . 230
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 53
Exterior Lamp Controls . . . . . . . . . . . . 132
Exterior Lamps Off Reminder . . . . . . 134
Exterior Lighting Battery Saver . . . . 139