2017 CADILLAC CT6 spare tire

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
286 VEHICLE CARE
on the flat wheel mounting
surface or on the wheel nuts or
bolts.
When It Is Time for New
Tires
Factors such as maintenance,
temperatures, driving speeds, vehicle
loading, and road conditions affect the
wear rate of the tires.
Treadwear indicators are one way to
tell when it is time for new tires.
Treadwear indicators appear when the
tires have only 1.6 mm (1/16 in) orless of tread remaining. See
Tire
Inspection 0284 and Tire
Rotation 0284.
The rubber in tires ages over time.
This also applies to the spare tire,
if the vehicle has one, even if it is
never used. Multiple factors including
temperatures, loading conditions, and
inflation pressure maintenance affect
how fast aging takes place. GM
recommends that tires, including the
spare if equipped, be replaced after six
years, regardless of tread wear. The
tire manufacture date is the last four
digits of the DOT Tire Identification
Number (TIN) which is molded into
one side of the tire sidewall. The first
two digits represent the week (01–52)
and the last two digits, the year. For
example, the third week of the year
2010 would have a four-digit DOT
date of 0310.
Vehicle Storage
Tires age when stored normally
mounted on a parked vehicle. Park a
vehicle that will be stored for at least
a month in a cool, dry, clean area
away from direct sunlight to slow aging. This area should be free of
grease, gasoline, or other substances
that can deteriorate rubber.
Parking for an extended period can
cause flat spots on the tires that may
result in vibrations while driving.
When storing a vehicle for at least a
month, remove the tires or raise the
vehicle to reduce the weight from the
tires.
Buying New Tires
GM has developed and matched
specific tires for the vehicle. The
original equipment tires installed
were designed to meet General
Motors Tire Performance Criteria
Specification (TPC Spec) system
rating. When replacement tires are
needed, GM strongly recommends
buying tires with the same TPC
Spec rating.
GM's exclusive TPC Spec system
considers over a dozen critical
specifications that impact the
overall performance of the vehicle,
including brake system

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
VEHICLE CARE 291
When the vehicle has a flat tire (2),
use the following example as a guide
to assist in the placement of the
wheel blocks (1), if equipped.
1. Wheel Block (If Equipped)
2. Flat Tire
The following information explains
how to repair or change a tire.
Tire Changing
Removing the Spare Tire and
Tools
1. Jack
2. Retainer Nut
3. Tool Bag
4. Strap
5. Wrench
6. Tow Hook (If Equipped)
To access the spare tire and tools:1. Open the trunk.
2. Lift the spare tire cover and attach the handle to the
trunk edge.
3. Turn the retainer nutcounterclockwise and remove the
spare tire. Place the spare tire
next to the tire being changed.
4. Remove the jack and tools from their container and place them
near the tire being changed.
Removing the Flat Tire and
Installing the Spare Tire
1. Do a safety check beforeproceeding. See If a Tire Goes
Flat 0289.
2. Turn the wheel wrench counterclockwise to loosen and
remove the wheel nut caps.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
292 VEHICLE CARE
3. Turn the wheel wrenchcounterclockwise to loosen all
the wheel nuts, but do not
remove them yet.
4. Place the jack near the flat tire.
5. Put the compact spare tire near you.
{Warning
Getting under a vehicle when it is
lifted on a jack is dangerous. If the
vehicle slips off the jack, you could
be badly injured or killed. Never get
under a vehicle when it is
supported only by a jack.
{Warning
Raising the vehicle with the jack
improperly positioned can damage
the vehicle and even make the
vehicle fall. To help avoid personal
injury and vehicle damage, be sure
to fit the jack lift head into the
proper location before raising the
vehicle.
{Warning
Lifting a vehicle and getting under
it to do maintenance or repairs is
dangerous without the appropriate
safety equipment and training. If a
jack is provided with the vehicle, it
is designed only for changing a flat
tire. If it is used for anything else,
you or others could be badly injured
or killed if the vehicle slips off the
jack. If a jack is provided with the
vehicle, only use it for changing a
flat tire. 6. Place the hex tube end of the
wrench over the hex head of
the jack.
7. Place the jack under the vehicle.
Caution
Make sure that the jack lift head is
in the correct position or you may
damage your vehicle. The repairs
would not be covered by your
warranty.
8. Position the jack lift head at the jack location nearest the flat tire
within the depression of the jack

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
VEHICLE CARE 293
pads, as shown. The jack must
not be used in any other
position.
9. Raise the vehicle by turning thejack handle clockwise. Raise the
vehicle far enough off the ground
so there is enough room for the
road tire to clear the ground.
10. Remove all of the wheel nuts.
11. Remove the flat tire.
{Warning
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause an accident. When
changing a wheel, remove any rust
or dirt from places where the wheel
attaches to the vehicle. In an
emergency, a cloth or a paper towel
(Continued)
Warning (Continued)
can be used; however, use a scraper
or wire brush later to remove all
rust or dirt.
12. Remove any rust or dirt from thewheel bolts, mounting surfaces,
and spare wheel.
13. Place the compact spare tire on the wheel-mounting surface.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
294 VEHICLE CARE
{Warning
Never use oil or grease on bolts or
nuts because the nuts might come
loose. The vehicle's wheel could fall
off, causing a crash.
14. Reinstall the wheel nuts. Tighten each nut by hand until the wheel
is held against the hub.
15. Lower the vehicle by turning the jack handle counterclockwise.
{Warning
Wheel nuts that are improperly or
incorrectly tightened can cause the
wheels to become loose or come off.
The wheel nuts should be tightened
with a torque wrench to the proper
torque specification after replacing.
Follow the torque specification
supplied by the aftermarket
manufacturer when using accessory
locking wheel nuts. See Capacities
and Specifications 0322 for original
equipment wheel nut torque
specifications.
Caution
Improperly tightened wheel nuts
can lead to brake pulsation and
rotor damage. To avoid expensive
brake repairs, evenly tighten the
wheel nuts in the proper sequence
and to the proper torque
specification. See Capacities and
Specifications 0322 for the wheel
nut torque specification.
16. Tighten the wheel nuts firmly in a crisscross sequence, as shown. 17. Lower the jack all the way and
remove the jack from under the
vehicle.
18. Tighten the wheel nuts firmly with the wheel wrench.
Storing a Flat or Spare Tire and
Tools
{Warning
Storing a jack, a tire, or other
equipment in the passenger
compartment of the vehicle could
cause injury. In a sudden stop or
collision, loose equipment could
strike someone. Store all these in
the proper place.
To store the flat tire and tools: 1. Open the trunk.
2. Replace the jack and tools as they were, originally, stored in
their container near the
spare tire.
3. Replace the spare tire cover.
4. Place the tire, lying flat, in the rear storage compartment.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
VEHICLE CARE 295
If there is a loop on the end of
the strap used to secure the flat
tire, go to Step 5. If there is not a
loop, go to Step 8.
5. Route the loop end of thestrap (3) through one of the
cargo tie-downs (1) in the rear of
the vehicle.
6. Route the hook (2) through the loop (3).
7. Pull the strap to tighten it around the cargo tie-down (1).
8. Route the hook end of the strap
through the wheel.
9. Attach the hook to the cargo tie-down in the rear of the
vehicle.
10. Tighten the strap.
The compact spare is for temporary
use only. Replace the compact spare
tire with a full-size tire as soon as
you can.
Compact Spare Tire
{Warning
Driving with more than one
compact spare tire at a time could
result in loss of braking and
handling. This could lead to a crash
and you or others could be injured.
Use only one compact spare tire at
a time.
If this vehicle has a compact spare
tire, it was fully inflated when new;
however, it can lose air over time.
Check the inflation pressure regularly.
It should be 420 kPa (60 psi).
Stop as soon as possible and check
that the spare tire is correctly inflated
after being installed on the vehicle.
The compact spare tire is designed for
temporary use only. The vehicle will
perform differently with the spare tire
installed and it is recommended that
the vehicle speed be limited to
80 km/h (50 mph). To conserve the
tread of the spare tire, have the

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
296 VEHICLE CARE
standard tire repaired or replaced as
soon as convenient and return the
spare tire to the storage area.
When using a compact spare tire, the
AWD (if equipped), ABS, and Traction
Control systems may engage until the
spare tire is recognized by the vehicle,
especially on slippery roads. Adjust
driving to reduce possible wheel slip.
Caution
When the compact spare is
installed, do not take the vehicle
through an automatic car wash
with guide rails. The compact spare
can get caught on the rails which
can damage the tire, wheel, and
other parts of the vehicle.Do not use the compact spare on
other vehicles.
Do not mix the compact spare tire or
wheel with other wheels or tires. They
will not fit. Keep the spare tire and its
wheel together.
Caution
Tire chains will not fit the compact
spare. Using them can damage the
vehicle and the chains. Do not use
tire chains on the compact spare.
Jump Starting
For more information about the
vehicle battery, see
Battery0263.
If the battery has run down, try to use
another vehicle and some jumper
cables to start your vehicle. Be sure to
use the following steps to do it safely.
{Warning
Batteries can hurt you. They can be
dangerous because: . They contain acid that can
burn you.
. They contain gas that can
explode or ignite.
. They contain enough
electricity to burn you.
If you do not follow these steps
exactly, some or all of these things
can hurt you.

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