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274 Vehicle Care
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
F1 Traction control module power
F2 Engine control module power
F3 Air conditioning clutch
F4 –
F5 Engine control module/ Integrated chassis control
module/Fuel pump power
module
F6 Wipers
F7 Cargo lamp/Bed lighting
F8 Fuel injectors –even
F9 Fuel injectors –odd
F10 Engine control module ignition 1
F11 Oxygen/Mass air flow/ Humidity/Induction air
temperature/Throttle inlet
pressure sensors Fuses Usage
F12 Starter
F13 Traction control module
F14 –
F15 –
F16 –
F17 Front axle actuator
F18 –
F19 Aeroshutters
F20 –
F21 Front blower
F22 Antilock brake system valves
F23 –
F24 Trailer
F25 Transfer case electronic control
F26 Antilock brake system pump
F27 Trailer brake control module
F28 Rear window defogger Fuses Usage
F29 –
F30 Driver heated seat
F31 –
F32 Passenger heated seat
F33 Right headlamp low beam/ FRT right park lamp/Right
front side marker/Right
rear side marker
F34 Fuel pump power module
F35 Integrated chassis control module
F36 Center high-mounted stoplamp
F37 Right high-beam headlamp
F38 Left high-beam headlamp
F39 Rear differential lock actuators
F40 Front differential lock actuators
F41 –
F42 –
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Vehicle Care 275
FusesUsage
F43 –
F44 –
F45 Vacuum pump
F46 Engine control module ignition 2
F47 Mid park phase lock/ Active fuel management/
Engine oil and canister
purge solenoid(s)/Oxygen
sensor.
F48 Fog lamps
F49 –
F50 Trailer parking lamps
F51 Horn
F52 –
F53 –
F54 –
F55 –
F56 Washer pump
F57 –
F58 – Fuses
Usage
F59 –
F60 Mirrors defogger
F61 –
F62 Canister vent solenoid
F63 –
F64 Trailer reverse lamp
F65 Left trailer stoplamp/Turn signal lamps
F66 Right trailer stoplamp/Turn signal lamps
F67 Electric power steering
F68 –
F69 Battery regulated voltage control
F70 –
F71 –
F72 –
F73 –
F74 Generator
F75 – Relays
Usage
K1 Air conditioning clutch
K2 Starter
K3 –
K4 Wipers speed
K5 Wipers control
K6 Cargo lamp/Bed lighting
K7 Powertrain
K8 –
K9 Rear differential lock actuators
K10 Front differential lock actuators
K11 Center high-mounted
stoplamp
K12 –
K13 Vacuum pump
K14 Trailer parking lamps
K15 Run/Crank
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FusesUsage
F2 –
F3 –
F4 Steering wheel controls
F5 Left headlamp low beam/ Front left park lamp/Left
front side marker/Left rear
side marker
F6 –
F7 –
F8 Mirror window module
F9 Instrument panel cluster
F10 –
F11 Door latches
F12 –
F13 OnStar/HVAC
F14 Radio/Infotainment
F15 RAP accessory relay control/Shifter control/
Shifter solenoid/Wiper
relay control/Washer
pump relay control/Rear
defog relay control Fuses
Usage
F16 Communication gateway module
F17 Left rear side marker/Right front turn lamp/Left rear
stop lamp/Left front turn
lamp/Right rear stop lamp
F18 Airbag/Sensing and diagnostic module/
Automatic occupant
sensing module
F19 –
F20 Amplifier
F21 –
F22 –
F23 Data link connector/USB front
F24 HVAC ignition
F25 Driver door latch
F26 –
F27 –
F28 Instrument panel cluster and automatic sensing
display Fuses
Usage
F29 Rear vision camera/ Transfer case control
module (4WD)/Inside
rear view
F30 –
F31 Front camera/Rear park assist
F32 Steering wheel controls backlighting
F33 Heated steering wheel/ Spare
F34 Spare
F35 Park/Reverse/Neutral/ Drive/Low display/
Wireless charging module/
USB rear
F36 Discrete logic ignition sensor
F37 –
F38 –
F39 Auxiliary power outlet 2
F40 –
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286 Vehicle Care
Warning (Continued)
.Poor handling.
.Rough ride.
.Needless damage from
road hazards.
The Tire and Loading
Information label on the vehicle
indicates the original equipment
tires and the correct cold tire
inflation pressures. The
recommended pressure is the
minimum air pressure needed to
support the vehicle's maximum
load carrying capacity. See
Vehicle Load Limits 0168.
How the vehicle is loaded
affects vehicle handling and ride
comfort. Never load the vehicle
with more weight than it was
designed to carry. When to Check
Check the pressure of the tires
once a month or more. Do not
forget to check the spare tire,
if the vehicle has one. The cold
compact spare tire pressure
should be at 420 kPa (60psi).
See
Compact Spare Tire 0310
and Full-Size Spare Tire 0311.
How to Check
Use a good quality pocket-type
gauge to check tire pressure.
Proper tire inflation cannot be
determined by looking at the tire.
Check the tire inflation pressure
when the tires are cold, meaning
the vehicle has not been driven
for at least three hours or no
more than 1.6 km (1 mi).
Remove the valve cap from the
tire valve stem. Press the tire
gauge firmly onto the valve to
get a pressure measurement.
If the cold tire inflation pressure
matches the recommended
pressure on the Tire and Loading Information label, no
further adjustment is necessary.
If the inflation pressure is low,
add air until the recommended
pressure is reached. If the
inflation pressure is high, press
on the metal stem in the center
of the tire valve to release air.
Re-check the tire pressure with
the tire gauge.
Put the valve caps back on the
valve stems to keep out dirt and
moisture and prevent leaks. Use
only valve caps designed for the
vehicle by GM. TPMS sensors
could be damaged and would
not be covered by the vehicle
warranty.
Tire Pressure Monitor
System
The Tire Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tire pressure
levels. The TPMS sensors monitor
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288 Vehicle Care
Tire Pressure Monitor
Operation
This vehicle may have a Tire
Pressure Monitor System (TPMS).
The TPMS is designed to warn the
driver when a low tire pressure
condition exists. TPMS sensors are
mounted onto each tire and wheel
assembly, excluding the spare tire
and wheel assembly. The TPMS
sensors monitor the air pressure in
the tires and transmit the tire
pressure readings to a receiver
located in the vehicle.
When a low tire pressure condition
is detected, the TPMS illuminates
the low tire pressure warning light
located on the instrument cluster.
If the warning light comes on, stop
as soon as possible and inflate the
tires to the recommended pressureshown on the Tire and Loading
Information label. See
Vehicle Load
Limits 0168.
A message to check the pressure in
a specific tire displays in the Driver
Information Center (DIC). The low
tire pressure warning light and the
DIC warning message come on at
each ignition cycle until the tires are
inflated to the correct inflation
pressure. Using the DIC, tire
pressure levels can be viewed. For
additional information and details
about the DIC operation and
displays, see Driver Information
Center (DIC) (Base Level) 0129 or
Driver Information Center (DIC)
(Uplevel) 0131.
The low tire pressure warning light
may come on in cool weather when
the vehicle is first started, and then
turn off as the vehicle is driven. This
could be an early indicator that the
air pressure is getting low and
needs to be inflated to the proper
pressure. A Tire and Loading Information label
shows the size of the original
equipment tires and the correct
inflation pressure for the tires when
they are cold. See
Vehicle Load
Limits 0168, for an example of the
Tire and Loading Information label
and its location. Also see Tire
Pressure 0285.
The TPMS can warn about a low
tire pressure condition but it does
not replace normal tire
maintenance. See Tire Inspection
0 291, Tire Rotation 0291, and
Tires 0278.
Caution
Tire sealant materials are not all
the same. A non-approved tire
sealant could damage the TPMS
sensors. TPMS sensor damage
caused by using an incorrect tire
sealant is not covered by the
vehicle warranty. Always use only
the GM approved tire sealant
available through your dealer or
included in the vehicle.
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TPMS Malfunction Light and
Message
The TPMS will not function properly
if one or more of the TPMS sensors
are missing or inoperable. When the
system detects a malfunction, the
low tire pressure warning light
flashes for about one minute and
then stays on for the remainder of
the ignition cycle. A DIC warning
message also displays. The
malfunction light and DIC warning
message come on at each ignition
cycle until the problem is corrected.
Some of the conditions that can
cause these to come on are:
.One of the road tires has been
replaced with the spare tire. The
spare tire does not have a
TPMS sensor. The malfunction
light and the DIC message
should go off after the road tire
is replaced and the sensor
matching process is performed
successfully. See “TPMS Sensor
Matching Process” later in this
section. .
The TPMS sensor matching
process was not done or not
completed successfully after
rotating the tires. The
malfunction light and the DIC
message should go off after
successfully completing the
sensor matching process. See
“TPMS Sensor Matching
Process” later in this section.
. One or more TPMS sensors are
missing or damaged. The
malfunction light and the DIC
message should go off when the
TPMS sensors are installed and
the sensor matching process is
performed successfully. See
your dealer for service.
. Replacement tires or wheels do
not match the original equipment
tires or wheels. Tires and wheels
other than those recommended
could prevent the TPMS from
functioning properly. See Buying
New Tires 0293. .
Operating electronic devices or
being near facilities using radio
wave frequencies similar to the
TPMS could cause the TPMS
sensors to malfunction.
If the TPMS is not functioning
properly, it cannot detect or signal a
low tire pressure condition. See
your dealer for service if the TPMS
malfunction light and DIC message
come on and stay on.
TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identification code. The identification
code needs to be matched to a new
tire/wheel position after rotating the
vehicle’s tires or replacing one or
more of the TPMS sensors. Also,
the TPMS sensor matching process
should be performed after replacing
a spare tire with a road tire
containing the TPMS sensor. The
malfunction light and the DIC
message should go off at the next
ignition cycle. The sensors are
matched to the tire/wheel positions,
using a TPMS relearn tool, in the
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290 Vehicle Care
following order: driver side front tire,
passenger side front tire, passenger
side rear tire, and driver side rear.
See your dealer for service or to
purchase a relearn tool. A TPMS
relearn tool can also be purchased.
See Tire Pressure Monitor Sensor
Activation Tool at
www.gmtoolsandequipment.com or
call 1-800-GM TOOLS
(1-800-468-6657).
There are two minutes to match the
first tire/wheel position, and
five minutes overall to match all four
tire/wheel positions. If it takes
longer, the matching process stops
and must be restarted.
The TPMS sensor matching
process is:1. Set the parking brake.
2. Turn the ignition on without starting the vehicle.
3. If the vehicle has an uplevel DIC, make sure the Tire
Pressure info page option is
turned on. The info pages on
the DIC can be turned on and
off through the Options menu. See
Driver Information Center
(DIC) (Base Level) 0129 or
Driver Information Center (DIC)
(Uplevel) 0131.
4. If the vehicle has an uplevel DIC, use the DIC controls on
the right side of the steering
wheel to scroll to the Tire
Pressure screen under the DIC
info page.
If the vehicle has a base level
DIC, use the MENU button to
select the Vehicle Information
menu in the DIC. Use the
thumbwheel to scroll to the Tire
Pressure Menu item screen.
5. If the vehicle has an uplevel DIC, press and hold
Vin the
center of the DIC controls.
If the vehicle has a base level
DIC, press SET/CLR on the
turn signal lever to begin the
sensor matching process.
A message asking if the
process should begin should
appear. Press SET/CLR again
to confirm the selection. The horn sounds twice to
signal the receiver is in relearn
mode and the TIRE
LEARNING ACTIVE message
displays on the DIC screen.
6. Start with the driver side front tire.
7. Place the relearn tool against the tire sidewall, near the valve
stem. Then press the button to
activate the TPMS sensor.
A horn chirp confirms that the
sensor identification code has
been matched to this tire and
wheel position.
8. Proceed to the passenger side front tire, and repeat the
procedure in Step 7.
9. Proceed to the passenger side rear tire, and repeat the
procedure in Step 7.
10. Proceed to the driver side rear tire, and repeat the procedure
in Step 7. The horn sounds two
times to indicate the sensor
identification code has been
matched to the driver side rear
tire, and the TPMS sensor
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vehicle is significantly pulling to one
side or the other. Some slight pull to
the left or right, depending on the
crown of the road and/or other road
surface variations such as troughs
or ruts, is normal. If the vehicle is
vibrating when driving on a smooth
road, the tires and wheels may need
to be rebalanced. See your dealer
for proper diagnosis.
Wheel Replacement
Replace any wheel that is bent,
cracked, or badly rusted or
corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and
wheel nuts should be replaced.
If the wheel leaks air, replace it.
Some aluminum wheels can be
repaired. See your dealer if any of
these conditions exist.
Your dealer will know the kind of
wheel that is needed.
Each new wheel should have the
same load-carrying capacity,
diameter, width, offset, and be
mounted the same way as the one it
replaces.Replace wheels, wheel bolts, wheel
nuts, or Tire Pressure Monitor
System (TPMS) sensors with new
GM original equipment parts.
{Warning
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could
affect the braking and handling of
the vehicle. Tires can lose air,
and cause loss of control, causing
a crash. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or
odometer calibration, headlamp
aim, bumper height, vehicle
ground clearance, and tire or tire
chain clearance to the body and
chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{Warning
If the vehicle has 255/55R20,
255/65R17 AT, 265/60R18,
265/65R17, or 265/70R16 size
tires, do not use tire chains.
There is not enough clearance.
Tire chains used on a vehicle
without the proper amount of
clearance can cause damage to
the brakes, suspension, or other
(Continued)