cooling CADILLAC CT6 2016 Owner's Manual

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Service and Maintenance 347(3) Check all fuel and vapor lines
and hoses for proper hook-up,
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.
(5) Or every five years, whichever
comes first. See Cooling
System 0 275 .
(6) 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.
(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 0 283 .

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
348 Service and Maintenance Maintenance Schedule
Additional Required
Services - Severe
12 000 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 miRotate tires, if recommended for the vehicle, and
perform Required Services. Check engine oil level
and oil life percentage. Change engine oil and
filter, if needed. (1)
@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @Replace passenger compartment air filter. (2)
@ @ @ @ @ @Inspect evaporative control system. (3)
@ @ @Replace engine air cleaner filter. (4)
@ @ @Replace spark plugs. Inspect spark plug wires.
(2.0L and 3.0L Twin Turbo Engines)
@ @Replace spark plugs. Inspect spark plug wires.
(3.6L Engine Only)
@Change automatic transmission fluid and filter.
@ @ @Change transfer case fluid, if equipped with
AWD. (5)
@ @ @Change rear axle fluid.
@ @ @Change front axle fluid, if equipped with AWD.
@ @ @Drain and fill engine cooling system. (6)
@Visually inspect accessory drive belts. (7)
@Replace brake fluid. (8)

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Service and Maintenance 349Footnotes — Maintenance
Schedule Additional Required
Services - Severe
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation 0 313 .
(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 airflow, window
fogging, or odors. Your GM dealer
can help determine when to replace
the filter.
(3) Check all fuel and vapor lines
and hoses for proper hook-up,
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. (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
System 0 275 .
(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 0 283 .Special Application
Services .
Severe Commercial Use
Vehicles Only: Lubricate chassis
components every 5 000 km/
3,000 mi.
.
Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior
Care 0 333 .

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
358 Technical Data
Vehicle Data Capacities and Specifications The following approximate capacities are given in metric and English conversions. See Recommended Fluids and
Lubricants 0 353 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 the
hood. See your dealer for more information.
Cooling System – Engine
2.0L L4 Engine 8.6 L 9.1 qt
2.0L L4 Engine with Rear A/C 10.3 L 10.9 qt
3.0L V6 Twin Turbo Engine 10.6 L 11.2 qt
3.0L V6 Twin Turbo Engine with Rear A/C 12.3 L 13.0 qt
3.0L V6 Twin Turbo Engine with Rear A/C and Auxiliary
Radiator 13.2 L 13.9 qt
3.6L V6 Engine 9.8 L 10.4 qt
3.6L V6 Engine with Rear A/C 11.4 L 12.0 qt
Cooling System – Twin Turbo
3.0L V6 Engine Intercoolers 3.2 L 3.4 qt

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Index 387Cleaning (cont'd)
Interior Care . . . . . . . . . . . . . . . . . . 338
Climate Control Systems
Automatic . . . . . . . . . . . . . . . . 178, 185
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Cluster, Instrument . . . . . . . . 118, 121
Collision Damage Repair . . . . . . . 368
Compact Spare Tire . . . . . . . . . . . . 326
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . 106
Compass . . . . . . . . . . . . . . . . . . . . . . . 113
Messages . . . . . . . . . . . . . . . . . . . . 148
Connections
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 377
Control
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 217
Control of a Vehicle . . . . . . . . . . . . . 193
Convenience Net . . . . . . . . . . . . . . . 108
Convex Mirrors . . . . . . . . . . . . . . . . . . 48
Coolant
Engine . . . . . . . . . . . . . . . . . . . . . . . . 277
Engine Temperature Gauge . . 128
Engine Temperature
Warning Light . . . . . . . . . . . . . . . 137
Cooling System . . . . . . . . . . . . . . . . . 275
Engine Messages . . . . . . . . . . . . 149
Courtesy Lamps . . . . . . . . . . . . . . . . 174 Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 367
Cruise Control . . . . . . . . . . . . . . . . . . 220
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Messages . . . . . . . . . . . . . . . . . . . . 148
Cruise Control, Adaptive . . . . . . . . 223
Customer Assistance . . . . . . . . . . . 364
Offices . . . . . . . . . . . . . . . . . . . . . . . . 363
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 364
Customer Information
Service Publications
Ordering Information . . . . . . . . 370
Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . 361
D Damage Repair, Collision . . . . . . . 368
Danger, Warning, and Caution . . . . 2
Data Recorders, Event . . . . . . . . . 373
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . 172
Defensive Driving . . . . . . . . . . . . . . . 193
Delayed Locking . . . . . . . . . . . . . . . . . 39
Diagnostics
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 379
Distracted Driving . . . . . . . . . . . . . . . 192
Dome Lamps . . . . . . . . . . . . . . . . . . . 174 Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 140
Ajar Messages . . . . . . . . . . . . . . . 148
Delayed Locking . . . . . . . . . . . . . . . . 39
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Power Locks . . . . . . . . . . . . . . . . . . . . 39
Rear Seat Pass-Through . . . . . . . 69
Drive Belt Routing, Engine . . . . . . 360
Drive Systems
All-Wheel Drive . . . . . . . . . . 213, 284
Driver Assistance Systems . . . . . 230
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . 140
Driver Mode Control . . . . . . . . . . . . 219
Driving
Assistance Systems . . . . . . . . . . 237
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 255
Defensive . . . . . . . . . . . . . . . . . . . . . 193
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 193
For Better Fuel Economy . . . . . . . 27
Hill and Mountain Roads . . . . . . 196
If the Vehicle is Stuck . . . . . . . . . 198
Loss of Control . . . . . . . . . . . . . . . 195
Off-Road Recovery . . . . . . . . . . . 194
Vehicle Load Limits . . . . . . . . . . . 198
Wet Roads . . . . . . . . . . . . . . . . . . . 195
Winter . . . . . . . . . . . . . . . . . . . . . . . . 197

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
388 Index E Electric Parking Brake . . . . . . . . . . 214
Electric Parking Brake Light . . . . 134
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 260
Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Fuses and Circuit Breakers . . . 290
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 293
Overload . . . . . . . . . . . . . . . . . . . . . 289
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 295
Emergency
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 376
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 273
Check and Service Engine
Soon Light . . . . . . . . . . . . . . . . . . 132
Compartment Overview . . . . . . . 265
Coolant . . . . . . . . . . . . . . . . . . . . . . . 277
Coolant Heater . . . . . . . . . . . . . . . 206
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 128 Engine (cont'd)
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 137
Cooling System . . . . . . . . . . . . . . . 275
Cooling System Messages . . . 149
Drive Belt Routing . . . . . . . . . . . . 360
Exhaust . . . . . . . . . . . . . . . . . . . . . . 209
Oil Life System . . . . . . . . . . . . . . . 272
Oil Messages . . . . . . . . . . . . . . . . . 149
Oil Pressure Gauge . . . . . . . . . . 126
Oil Pressure Light . . . . . . . . . . . . 138
Overheating . . . . . . . . . . . . . . . . . . 280
Power Messages . . . . . . . . . . . . . 150
Running While Parked . . . . . . . . 210
Starting . . . . . . . . . . . . . . . . . . . . . . . 204
Engine Oil
Temperature Gauge . . . . . . . . . . 127
Entry Lighting . . . . . . . . . . . . . . . . . . . 175
Equipment, Towing . . . . . . . . . . . . . 259
Event Data Recorders . . . . . . . . . . 373
Exit Lighting . . . . . . . . . . . . . . . . . . . . 176
Extender, Safety Belt . . . . . . . . . . . . 75
Exterior Lamp Controls . . . . . . . . . 170
Exterior Lamps Off Reminder . . . 172
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 176 F Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . 273
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 172
Flashers, Hazard Warning . . . . . . 173
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 320
Changing . . . . . . . . . . . . . . . . . . . . . 321
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 341
Fluid
Automatic Transmission . . . . . . 273
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 283
Washer . . . . . . . . . . . . . . . . . . . . . . . 281
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 237
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 371
Front Automatic Braking
(FAB) System . . . . . . . . . . . . . . . . . 240
Front Pedestrian Braking
(FPB) System . . . . . . . . . . . . . . . . . 241
Front Seats
Heated and Ventilated . . . . . . . . . . 64
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Additives . . . . . . . . . . . . . . . . . . . . . 253
Economy Driving . . . . . . . . . . . . . . . 27

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Index 391Low-Profile Tires . . . . . . . . . . . . . . . . 300
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 95
Lumbar Adjustment . . . . . . . . . . 60, 68
Front Seats . . . . . . . . . . . . . . . . . . . . . 60
Rear Seats . . . . . . . . . . . . . . . . . . . . . 68
M Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 356
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 350
Maintenance Schedule . . . . . . . . . 344
Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 353
Malfunction Indicator Lamp . . . . . 132
Manual Mode . . . . . . . . . . . . . . . . . . . 212
Massage . . . . . . . . . . . . . . . . . . . . . . . . 66
Memory Features . . . . . . . . . . . . . . . . 12
Memory Seats . . . . . . . . . . . . . . . . . . . 63
Messages
Airbag System . . . . . . . . . . . . . . . . 154
Battery Voltage and
Charging . . . . . . . . . . . . . . . . . . . . 147
Brake System . . . . . . . . . . . . . . . . 147
Compass . . . . . . . . . . . . . . . . . . . . . 148
Door Ajar . . . . . . . . . . . . . . . . . . . . . 148
Engine Cooling System . . . . . . . 149 Messages (cont'd)
Engine Oil . . . . . . . . . . . . . . . . . . . . 149
Engine Power . . . . . . . . . . . . . . . . 150
Fuel System . . . . . . . . . . . . . . . . . . 150
Key and Lock . . . . . . . . . . . . . . . . . 150
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 151
Object Detection System . . . . . 151
Ride Control System . . . . . . . . . . 154
Safety Belt . . . . . . . . . . . . . . . . . . . . 154
Security . . . . . . . . . . . . . . . . . . . . . . 155
Service Vehicle . . . . . . . . . . . . . . . 155
Starting the Vehicle . . . . . . . . . . . 156
Steering System . . . . . . . . . . . . . . 155
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Transmission . . . . . . . . . . . . . . . . . 156
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 146
Vehicle Reminder . . . . . . . . . . . . . 157
Vehicle Speed . . . . . . . . . . . . . . . . 157
Washer Fluid . . . . . . . . . . . . . . . . . 157
Window . . . . . . . . . . . . . . . . . . . . . . . 157
Mirror
Rear Camera . . . . . . . . . . . . . . . . . . . 50
Mirrors
Automatic Dimming
Rearview . . . . . . . . . . . . . . . . . . . . . . 49
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 48
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 49
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Mirrors (cont'd)
Tilt in Reverse . . . . . . . . . . . . . . . . . . 49
Mirrors, Interior Rearview . . . . . . . . 49
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Driver Control . . . . . . . . . . . . . . . . . 219
Monitor System, Tire
Pressure . . . . . . . . . . . . . . . . . . . . . . 308
N Navigation
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 376
Net, Convenience . . . . . . . . . . . . . . 108
New Vehicle Break-In . . . . . . . . . . . 202
Night Vision System . . . . . . . . . . . . 243
O Object Detection System
Messages . . . . . . . . . . . . . . . . . . . . . 151
Odometer . . . . . . . . . . . . . . . . . . . . . . . 124
Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Off-Road
Recovery . . . . . . . . . . . . . . . . . . . . . 194
Oil
Engine . . . . . . . . . . . . . . . . . . . . . . . . 270
Engine Oil Life System . . . . . . . 272
Engine Oil Pressure Gauge . . . 126
Messages . . . . . . . . . . . . . . . . . . . . 149
Pressure Light . . . . . . . . . . . . . . . . 138
Older Children, Restraints . . . . . . . 88