Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-15218998) -
2022 - CRC - 10/22/21
302 DRIVING AND OPERATING
Recommended Fuel (3.6L
V6 Engine)
Regular unleaded gasoline meeting
ASTM specification D4814 with a
posted octane rating (R+M)/2 of 87 or
greater is recommended. Do not use
gasoline with a posted octane rating
of less than 87, as this will result in
reduced performance and driveability.
If heavy knocking is heard when using
gasoline rated at 87 or greater, the
engine needs service.
Do not use any fuel labeled E85 or
FlexFuel. Do not use gasoline with
ethanol levels greater than 15% by
volume.
Prohibited Fuels
Caution
Do not use fuels with any of the
following conditions; doing so may
damage the vehicle and void its
warranty:
.For vehicles that are not
FlexFuel, fuel labeled greater
than 15% ethanol by volume,
such as mid-level ethanol blends
(16–50% ethanol), E85,
or FlexFuel.
.Fuel with any amount of
methanol, methylal, ferrocene,
and aniline. These fuels can
corrode metal fuel system parts
or damage plastic and rubber
parts.
.Fuel containing metals such as
methylcyclopentadienyl
manganese tricarbonyl (MMT),
which can damage the emissions
control system and spark plugs.
.Fuel with a posted octane rating
of less than the recommended
fuel. Using this fuel will lower(Continued)
Caution (Continued)
fuel economy and performance,
and may decrease the life of the
emissions catalyst.
Fuels in Foreign Countries
The U.S., Canada, and Mexico post
fuel octane ratings in anti-knock index
(AKI). For fuel not to use in a foreign
country, seeProhibited Fuels 0302.
Fuel Additives
TOP TIER Detergent Gasoline is highly
recommended for use with your
vehicle. If your country does not have
TOP TIER Detergent Gasoline, add
ACDelco Fuel System Treatment Plus
−Gasoline to the vehicle’s gasoline fuel
tank at every oil change or 15 000 km
(9,000 mi), whichever occurs first. TOP
TIER Detergent Gasoline and ACDelco
Fuel System Treatment Plus−Gasoline
will help keep your vehicle’s engine
fuel deposit free and performing
optimally.
Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-15218998) -
2022 - CRC - 10/22/21
438 INDEX
FluidAutomatic Transmission . . . . . . . . . 328
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 31
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Front Seats Heated and Ventilated . . . . . . . . . . . . 46
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Economy, Driving for Better . . . . . 216
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 304
Filling the Tank . . . . . . . . . . . . . . . . . . . 303
Foreign Countries . . . . . . . . . . . . . . . . . 302
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Low Fuel Warning Light . . . . . . . . . 122
Management, Active . . . . . . . . . . . . . . 237
Prohibited Fuels . . . . . . . . . . . . . . . . . . 302
Recommended . . . . . . . . . . . . . . 301, 302
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 Fuses
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Fuses and Circuit Breakers . . . . . . . 343
Instrument Panel Fuse Block . . . . 347
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
G
Garage Door Opener . . . . . . . . . . . . . . . . 135
Programming . . . . . . . . . . . . . . . . . . . . . . 135
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . 340
Gauges
Engine Coolant Temperature . . . . 113
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Speedometer . . . . . . . . . . . . . . . . . . . . . . 111
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 112
Trip Odometer . . . . . . . . . . . . . . . . . . . . 112
Warning Lights andIndicators . . . . . . . . . . . . . . . . . . . . . . . . 109
General Information Service and Maintenance . . . . . . . . 394
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 319
Global Positioning
System (GPS) . . . . . . . . . . . . . . . . . . . . . . 172
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
Guidance Problems with the Route . . . . . . . . . 172
H
Hazard Warning Flashers . . . . . . . . . . 142
HD Radio Technology . . . . . . . . . . . . . . 154
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 40
Head-up Display . . . . . . . . . . . . . . . . . . . . 127
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 141
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . . . 141
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 141
High-Beam On Light . . . . . . . . . . . . . . 123
High/Low Beam Changer . . . . . . . . . 141
Lamps On Reminder . . . . . . . . . . . . . . 123
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Steering Wheel . . . . . . . . . . . . . . . . . . . . 101
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . 31
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Heating . . . . . . . . . . . . . . . . . . . . . . . . .206, 211
