Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
400 SERVICE AND MAINTENANCE
UsageFluid/Lubricant
Transfer Case (All-Wheel Drive) Transfer Case Fluid (GM Part No. 19331044, in Canada 19331045). Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or Dielectric Silicone Grease (GM Part No. 12345579, in Canada 10953481).
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection
requirements.
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 23418368 A3219C
3.0L V6 Engine (Driver Side) 23441383 A3207C
3.0L V6 Engine (Passenger Side) 23450879 A3206C
3.6L V6 Engine 23458700 A3204C
Engine Oil Filter
2.0L L4 Engine 12640445 PF64
3.0L V6 Engine 19330000 PF63E
3.6L V6 Engine 19330000 PF63E
Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
SERVICE AND MAINTENANCE 401
PartGM Part Number ACDelco Part Number
Passenger Compartment Air Filter Particulate 13508023CF185
Carbon 13356914CF184
Spark Plugs 2.0L L4 Engine 1264782741-125
3.0L V6 Engine 1265028341-131
3.6L V6 Engine 1264678041-130
Wiper Blades Driver Side –60 cm (23.62 in) 23368186—
Passenger Side –45 cm (17.72 in) 23353587—
Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
432 INDEX
IndexA
Accessories and Modifications . . . . . 298
Accessory Power . . . . . . . . . . . . . . . . . . . . 224
Adaptive Cruise Control . . . . . . . . . . . . 245
Add-On Electrical Equipment . . . . . . 295
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 396
Adjustments
Lumbar, Front Seats . . . . . . . . . . . . . . . . 67
Lumbar, Rear Seats . . . . . . . . . . . . . . . . . 76
Thigh Support . . . . . . . . . . . . . . . . . . . . . . 68
Air Cleaner/Filter, Engine . . . . . . . . . . 311
Air Conditioning . . . . . . . . . . . . . . .191, 197
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . . . . . 204
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
How Does an Airbag Restrain? . . . . . 89
Passenger Sensing System . . . . . . . . . 91
What Makes an Airbag Inflate? . . . . 89
What Will You See after anAirbag Inflates? . . . . . . . . . . . . . . . . . . . 89
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Where Are the Airbags? . . . . . . . . . . . . 86 Airbags
Adding Equipment to the
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Passenger Status Indicator . . . . . . . 141
Readiness Light . . . . . . . . . . . . . . . . . . . 141
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
System Check . . . . . . . . . . . . . . . . . . . . . . . 85
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . . 51
Alert
Lane Change . . . . . . . . . . . . . . . . . . . . . . 269
Side Blind Zone (SBZA) . . . . . . . . . . 268
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 341
All-Wheel Drive . . . . . . . . . . . . . . . .234, 326
Antilock Brake System (ABS) . . . . . . 234 Warning Light . . . . . . . . . . . . . . . . . . . . 146
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384
Armrest Storage . . . . . . . . . . . . . . . . . . . . . 116
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Assistance Systems for Driving . . . . 260
Assistance Systems for Parking and Backing . . . . . . . . . . . . . . . . . . . . . . . 254
Auto Stop Mode . . . . . . . . . . . . . . . . . . . . 150
Automatic Climate Control System . . . . . 191, 197
Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
INDEX 435
Driving (cont'd)Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
For Better Fuel Economy . . . . . . . . . . . 32
Hill and Mountain Roads . . . . . . . . 211
If the Vehicle is Stuck . . . . . . . . . . . . 212
Loss of Control . . . . . . . . . . . . . . . . . . . . 209
Off-Road Recovery . . . . . . . . . . . . . . . . 209
Vehicle Load Limits . . . . . . . . . . . . . . 213
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 210
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Winter Mode Light . . . . . . . . . . . . . . . 146
Driving for Better Energy Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
E
Electric Parking Brake . . . . . . . . . . . . . . 235
Electric Parking Brake Light . . . . . . . 145
Electrical Equipment, Add-On . . . . . 295
Electrical Requirements for
Battery Charging . . . . . . . . . . . . . . . . . . 285
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Fuses and Circuit Breakers . . . . . . . 331
Instrument Panel Fuse Block . . . . 335
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337 Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422
Energy Efficiency Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Energy Information . . . . . . . . . . . . . . . . . 161
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 311
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 143
Compartment Overview . . . . . . . . . . 300
Coolant Temperature Gauge . . . . . 139
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 149
Cooling System . . . . . . . . . . . . . . 312, 316
Drive Belt Routing . . . . . . . . . . . . . . . . 406
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Oil Life System . . . . . . . . . . . . . . . . . . . . 309
Oil Pressure Gauge . . . . . . . . . . . . . . . . 137
Oil Pressure Light . . . . . . . . . . . . . . . . . 149
Overheating . . . . . . . . . . . . . . . . . . . . . . . 321
Power Messages . . . . . . . . . . . . . . . . . . 169
Running While Parked . . . . . . . . . . . 230
Starting . . . . . . . . . . . . . . . . . . . . . . . 218, 221
Engine Oil
Temperature Gauge . . . . . . . . . . . . . . . 138
Engine Unavailable Out of Fuel . . . . . . . . . . . . . . . . . . . . . . . . 227 Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 188
Equipment, Towing . . . . . . . . . . . . . . . . . 294
Event Data Recorders . . . . . . . . . . . . . . 419
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 189
Extended Parking . . . . . . . . . . . . . . . . . . . 226
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 83
Exterior Lamp Controls . . . . . . . . . . . . 183
Exterior Lamps Off Reminder . . . . . . 185
Exterior Lighting Battery Saver . . . . 189
F
Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . 311
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 185
Flashers, Hazard Warning . . . . . . . . . . 186
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 368
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 387
Fluid Automatic Transmission . . . . . . . . . 310
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 55
Forward Automatic Braking . . . . . . . . 262
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
INDEX 439
Oil (cont'd)Engine Oil Pressure Gauge . . . . . . . 137
Pressure Light . . . . . . . . . . . . . . . . . . . . . 149
Older Children, Restraints . . . . . . . . . . . 96
Online Owner Center . . . . . . . . . . . . . . . 411
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
OnStar Additional Information . . . . 426
OnStar Connections . . . . . . . . . . . . . . . . 423
OnStar Diagnostics . . . . . . . . . . . . . . . . . 425
OnStar Emergency . . . . . . . . . . . . . . . . . . 422
OnStar Navigation . . . . . . . . . . . . . . . . . . 423
OnStar Overview . . . . . . . . . . . . . . . . . . . . 421
OnStar Security . . . . . . . . . . . . . . . . . . . . . 422
Ordering
Service Publications . . . . . . . . . . . . . . 416
Out of Fuel/Engine Unavailable . . . . 227
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Overheating, Engine . . . . . . . . . . . . . . . . 321
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . . . . 224
Shifting Out of . . . . . . . . . . . . . . . . . . . . 225
Parking Brake and P (Park)Mechanism Check . . . . . . . . . . . . . . . 327
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Parking (cont'd)
Over Things That Burn . . . . . . . . . . . 225
Parking Assist . . . . . . . . . . . . . . . . . . . . . . . 254
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . 254
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Passenger Sensing System . . . . . . . . . . 91
Pedestrian Ahead Indicator . . . . . . . . 147
Perchlorate Materials Requirements, California . . . . . . . . . 297
Personalization
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Plug-In Charging . . . . . . . . . . . . . . . . . . . . 274
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Indicator Gauge . . . . . . . . . . . . . . . . . . . 136
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Protection, Battery . . . . . . . . . . . . . . . . 189
Retained Accessory (RAP) . . . . . . . . 224
Seat Adjustment . . . . . . . . . . . . . . . . . . . . 67
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Pregnancy, Using Seat Belts . . . . . . . . . 83 Premium Care Maintenance
Cadillac . . . . . . . . . . . . . . . . . . . . . . . . . . . . 390
Privacy Vehicle Data Recording . . . . . . . . . . 419
Program Courtesy Transportation . . . . . . . . . 413
Programmable Charging . . . . . . . . . . . . 152
Proposition
65 Warning,
California . . . . . . . . . . . . . . .297, 324, 374, Back Cover
R
Radio Frequency Statement . . . . . . . . 417
Reading Lamps . . . . . . . . . . . . . . . . . . . . . 188
Ready Indicator . . . . . . . . . . . . . . . . . . . . . 151
Rear Camera Mirror . . . . . . . . . . . . . . . . . 56
Rear Seat Pass-Through Door . . . . . . . 77
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Heated and Ventilated . . . . . . . . . . . . . 77
Rear Storage . . . . . . . . . . . . . . . . . . . . . . . . 116
Rear Vision Camera (RVC) . . . . . . . . . 254
Rear Window Sunshade . . . . . . . . . . . . . 60
Rearview Mirrors
Automatic Dimming . . . . . . . . . . . . . . . . 56
Reclining Seatbacks . . . . . . . . . . . . . . . . . 69
Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . 399