FLUID CADILLAC CT6 2017 1.G Owner's Guide

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
312 SERVICE AND MAINTENANCE
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. SeeEngine Oil Life
System 0252.
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 Rotation0284.
. Check engine oil level and oil
life percentage. If needed, change
engine oil and filter, and reset oil
life system. See Engine Oil0250
and Engine Oil Life System 0252.
. Check engine coolant level. See
Engine Coolant 0256.
. Check windshield washer fluid
level. See Washer Fluid 0260.
. Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care 0301. Replace worn or
damaged wiper blades. See Wiper
Blade Replacement 0265. .
Check tire inflation pressures. See
Tire Pressure 0279.
. Inspect tire wear. See Tire
Inspection 0284.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter 0254.
. Inspect brake system. See Exterior
Care 0301.
. Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of wear.
See Exterior Care 0301.
. Check restraint system
components. See Safety System
Check 072.
. 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 0301.
. Check starter switch. See Starter
Switch Check 0264. .
Check automatic transmission
shift lock control function. See
Automatic Transmission Shift Lock
Control Function Check 0264.
. Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check 0265.
. 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. See your dealer if service is
required.
. Inspect sunroof track and seal,
if equipped. See Sunroof052.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
SERVICE AND MAINTENANCE 313
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. 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. (3.0L
Twin Turbo Engine)@ @
Replace spark plugs. Inspect spark plug wires. (3.6L
Engine)@
Drain and fill engine cooling system. (5)@
Change transfer case fluid. (6)@
Change front and rear axle fluid.@
Visually inspect accessory drive belts. (7)@
Replace brake fluid. (8)

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
314 SERVICE AND MAINTENANCE
Footnotes—Maintenance Schedule
Additional Required Services -
Normal
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0284.
(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 two 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 System0255.
(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 0262.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
SERVICE AND MAINTENANCE 315
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. 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. (3.0L
Twin Turbo Engine)@ @
Replace spark plugs. Inspect spark plug wires. (3.6L
Engine)@
Change automatic transmission fluid and filter.@@@
Change transfer case fluid. (5)@@@
Change front and rear axle fluid.@@@
Drain and fill engine cooling system. (6)@
Visually inspect accessory drive belts. (7)@
Replace brake fluid. (8)

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
316 SERVICE AND MAINTENANCE
Footnotes—Maintenance Schedule
Additional Required Services -
Severe
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0284.
(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 two 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 System0255.
(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 0262.Special Application
Services
Severe Conditions Requiring
More Frequent Maintenance
.
Public service, military,
or commercial use vehicles to
include the following:
‐Ambulances, police cars and
emergency rescue vehicles.
‐ Civilian vehicles such as light
duty pick-up trucks, SUVs and
passenger cars that are used in
military applications.
‐ Recovery vehicles such as tow
trucks and flatbed single vehicle
carriers or any vehicle that is
consistently used in towing
trailers or other loads.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
318 SERVICE AND MAINTENANCE
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Automatic Transmission DEXRON
®-HP Automatic Transmission Fluid (GM Part No. 19331925).
Chassis Lubrication Chassis Lubricant (GM Part No. 12377985) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL
®Coolant. See
Engine Coolant 0256.
Engine Oil Engine oil meeting the dexos1™ specification of the proper SAE viscosity grade.
ACDelco dexos1 Synthetic Blend is recommended. See Engine Oil0250.
Hood Latch Assembly, Secondary Latch,
Pivots, Spring Anchor, and Release Pawl Lubriplate Lubricant Aerosol (GM Part No. 89021668) or lubricant meeting
requirements of NLGI #2, Category LB or GC-LB.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19299818).
Key Lock Cylinders, Hood, and Door Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241).
Rear Axle (Non-Limited Slip Differential) SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88863089).
Transfer Case (All-Wheel Drive) Transfer Case Fluid (GM Part No. 19331044). Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770) or Dielectric Silicone Grease (GM Part No. 12345579).
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
322 TECHNICAL DATA
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and Lubricants
0 318 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.
Cooling System –Engine
3.0L V6 Twin Turbo Engine 10.4 L 11.0 qt
3.0L V6 Twin Turbo Engine with Rear A/C 12.2 L 12.9 qt
3.0L V6 Twin Turbo Engine with Rear A/C and Auxiliary
Radiator 13.1 L 13.8 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
Engine Oil with Filter 5.7 L 6.0 qt
Fuel Tank 72.7 L 19.2 gal

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
TECHNICAL DATA 323
ApplicationCapacities
Metric English
Transfer Case –AWD 0.8 L 0.85 qt
Wheel Nut Torque 150 Y110 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 Specifications
Engine VIN Code Horsepower TorqueSpark Plug Gap
3.0L V6 Twin Turbo
Engine 6
307 kW @ 5700 rpm
(411 hp @ 5700 rpm) 555
Y @
2500-5100 rpm
(409 lb ft @
2500-5100 rpm) 0.65–0.75 mm (0.26–
0.030 in)
3.6L V6 Engine S246 kW @ 6900 rpm
(330 hp @ 6900 rpm) 382
Y @ 5700 rpm
(282 lb ft @ 5700 rpm) 0.80–0.90 mm (0.031–
0.035 in)
Vehicle Top Speed
Top Speed MetricEnglish
3.0L V6 Twin Turbo Engine 240 km/h149 mph
3.6L V6 Engine 240 km/h149 mph

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
328 INDEX
Automatic (cont'd)Headlamp System . . . . . . . . . . . . . . . . 165
Transmission . . . . . . . . . . . . . . . . . . . . . . 201
Transmission Fluid . . . . . . . . . . . . . . . 253
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . 203
Shift Lock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Automatic Vehicle Hold (AVH) . . . . 207
B
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Jump Starting . . . . . . . . . . . . . . . . . . . . . 296
Power Protection . . . . . . . . . . . . . . . . . . 169
Voltage and Charging Messages . . . . . . . . . . . . . . . . . . . . . . . . 141
Blade Replacement, Wiper . . . . . . . . . 265
Boost Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 122
Brake
Parking, Electric . . . . . . . . . . . . . . . . . . 205
System Warning Light . . . . . . . . . . . . 129
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
System Messages . . . . . . . . . . . . . . . . . 142
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186 Braking (cont'd)
Automatic Forward . . . . . . . . . . . . . . . 230
Braking System Front Pedestrian (FPB) . . . . . . . . . . . 232
Break-In, New Vehicle . . . . . . . . . . . . . . 194
Bulb Replacement . . . . . . . . . . . . . . . . . . 267 Headlamp Aiming . . . . . . . . . . . . . . . . 266
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . 267
License Plate Lamps . . . . . . . . . . . . . . 267
Buying New Tires . . . . . . . . . . . . . . . . . . . 286C
Capacities and Specifications . . . . . . 322
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . 200
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Winter Driving . . . . . . . . . . . . . . . . . . . . 189
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . 105
Caution, Danger, and Warning . . . . . . . . 2
Center Console Storage . . . . . . . . . . . . . 104
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 289
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Charging System Light . . . . . . . . . . . . . 127
Check Malfunction Indicator EngineLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Child Restraints
Infants and Young Children . . . . . . . . 87
Lower Anchors and Tethers for
Children . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Older Children . . . . . . . . . . . . . . . . . . . . . . 85
Securing . . . . . . . . . . . . . . . . . . . . . . . . .98, 99
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Cigarette Lighter . . . . . . . . . . . . . . . . . . . . 114
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 269
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . 301
Interior Care . . . . . . . . . . . . . . . . . . . . . . 305
Climate Control Systems Automatic . . . . . . . . . . . . . . . . . . . . 171, 178
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Cluster, Instrument . . . . . . . . . . . .115, 118
Compact Spare Tire . . . . . . . . . . . . . . . . . 295
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Control Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Control of a Vehicle . . . . . . . . . . . . . . . . 185
Convenience Net . . . . . . . . . . . . . . . . . . . . 105
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . 45
Coolant Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Engine Temperature Gauge . . . . . . 124

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
330 INDEX
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 169
Extended Parking . . . . . . . . . . . . . . . . . . . 200
Exterior Lamp Controls . . . . . . . . . . . . 163
Exterior Lamps Off Reminder . . . . . . 164
Exterior Lighting Battery Saver . . . . 169
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . 254
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 165
Flashers, Hazard Warning . . . . . . . . . . 166
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Fluid Automatic Transmission . . . . . . . . . 253
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 46
Forward Automatic Braking . . . . . . . . 230
Forward Collision Alert (FCA)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Front Seats Heated and Ventilated . . . . . . . . . . . . . 62
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240 Fuel (cont'd)
Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Economy Driving . . . . . . . . . . . . . . . . . . . 26
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . . . . . . 242
Filling the Tank . . . . . . . . . . . . . . . . . . . 240
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Low Fuel Warning Light . . . . . . . . . 134
System Messages . . . . . . . . . . . . . . . . . 145
Fuses Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Fuses and Circuit Breakers . . . . . . . 269
Instrument Panel Fuse Block . . . . 272
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
G
Garage Door OpenerProgramming . . . . . . . . . . . . . . . . . . . . . . 160
Gauges Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Engine Coolant Temperature . . . . 124
Engine Oil Pressure . . . . . . . . . . . . . . . 123
Engine Oil Temperature . . . . . . . . . . 123
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Speedometer . . . . . . . . . . . . . . . . . . . . . . 121
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 121 Gauges (cont'd)
Trip Odometer . . . . . . . . . . . . . . . . . . . . 121
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . . . . . . 114
General Information Service and Maintenance . . . . . . . . 310
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 245
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
H
Hazard Warning Flashers . . . . . . . . . . 166
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 56
Head-up Display . . . . . . . . . . . . . . . . . . . . 138
Headlamps Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 165
Bulb Replacement . . . . . . . . . . . . . . . . 267
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . . . . 165
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 165
High-Beam On Light . . . . . . . . . . . . . . 134
High/Low Beam Changer . . . . . . . . . 164
Lamps On Reminder . . . . . . . . . . . . . . 135
Heated Steering Wheel . . . . . . . . . . . . . . . . . . . . 108
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62