
GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
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Vehicle Care 249
Checking Brake Fluid
With the vehicle in P (Park) on a level
surface, the brake fluid level should be
between the minimum and maximum marks
on the brake fluid reservoir.
There are only two reasons why the brake
fluid level in the reservoir may go down:
.Normal brake lining wear. When new
linings are installed, the fluid level goes
back up.
.A fluid leak in the brake hydraulic system.
Have the brake hydraulic system fixed.
With a leak, the brakes will not
work well.
Always clean the brake fluid reservoir cap
and the area around the cap before
removing it.
Do not top off the brake fluid. Adding fluid
does not correct a leak. If fluid is added
when the linings are worn, there will be too
much fluid when new brake linings are
installed. Add or remove fluid, as necessary,
only when work is done on the brake
hydraulic system.
{Warning
If too much brake fluid is added, it can
spill on the engine and burn, if the
engine is hot enough. You or others could
be burned, and the vehicle could be
damaged. Add brake fluid only when
work is done on the brake hydraulic
system.
When the brake fluid falls to a low level,
the brake warning light comes on. See Brake
System Warning Light 088.
Brake fluid absorbs water over time which
degrades the effectiveness of the brake fluid.
Replace brake fluid at the specified intervals
to prevent increased stopping distance. See
Maintenance Schedule 0311.
What to Add
Use only GM approved DOT 4 brake fluid
from a clean, sealed container. See
Recommended Fluids and Lubricants 0320.
{Warning
The wrong or contaminated brake fluid
could result in damage to the brake
system. This could result in the loss of
braking leading to a possible injury.
Always use the proper GM approved
brake fluid.
Caution
If brake fluid is spilled on the vehicle's
painted surfaces, the paint finish can be
damaged. Immediately wash off any
painted surface.
Battery - North America
For diesel engine vehicles, see “Battery”in
the Duramax diesel supplement.
The original equipment battery is
maintenance free. Do not remove the cap
and do not add fluid.
Refer to the replacement number shown on
the original battery label when a new
battery is needed. See Engine Compartment
Overview 0235 for battery location.

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Vehicle Care 261
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Fuses Usage
F1 TCM BATT –Traction
Control Module Power
F2 ECM BATT –Engine
Control Module Power
F3 A/C CLTCH –Air
Conditioning Clutch
F4 –
F5 ECM/ICCM/FPPM RUN/ CRANK–Integrated
Chassis Control Module
Run/Crank –Engine
Control Module Run/
Crank –Fuel Pump
Power Module Run
Crank
F6 WIPER –Front Wipers
F7 Cargo Lamp/Bed Lighting
F8 INJ EVEN –Fuel
Injectors Even
F9 INJ ODD –Fuel
Injectors Odd Fuses
Usage
F10 ECM IGN –Engine
Control Module Ignition
F11 MISC 1 –Oxygen/Mass
Air Flow/Humidity/
Induction Air
Temperature/Throttle
Inlet Pressure Sensors
F12 Starter
F13 TCM RUN/CRNK –
Traction Control Module
Run/Crank
F14 –
F15 –
F16 –
F17 FRT AXLE ACT –Front
Axle Actuator
F18 –
F19 AERO SHTR –
Aeroshutters
F20 –
F21 FRT BLWR –Front
Blower Fuses
Usage
F22 ABS VLV –Antilock
Brake System Valves
F23 –
F24 TRLR –Trailer
F25 TREC –Transfer Case
Electronic Control
F26 ABS PUMP –Antilock
Brake System Pump
F27 TRLR BRK CNTRL MDL –
Trailer Brake Control
Module
F28 REAR WNDW DEFOG - Rear Window Defogger
F29 –
F30 HTD SEAT DVR –Driver
Heated Seat
F31 –
F32 HTD SEAT PASS –
Passenger Heated Seat

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Vehicle Care 263
FusesUsage
F67 EPS –Electric Power
Steering
F68 –
F69 RVC –Battery
Regulated Voltage
Control
F70 –
F71 –
F72 –
F73 –
F74 GEN –Generator
F75 – Relays
Usage
K1 A/C Clutch –Air
Conditioning Clutch
K2 STRTR –Starter
K3 –
K4 WPR SPD –Wiper
Speed
K5 WPR CNTRL –Wiper
Control
K6 Cargo Lamp/Bed Lighting
K7 PWR TRN –Powertrain
K8 –
K9 –
K10 – Relays
Usage
K11 CHMSL –Center High
Mounted Stop Lamp
K12 –
K13 VAC PUMP –Brake
Vacuum Pump
K14 TRLR PRK LAMPS –
Trailer Park Lamps
K15 RUN/CRNK –Run/Crank
K16 –
K17 REAR WNDW DEFOG –
Rear Window/Mirror
Defogger

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Vehicle Care 265
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Fuses Usage
F1 BCM 1 –Body Control
Module 1 –Indicator
Dimming Control, Retained
Accessory Power (RAP)
Relay Coil Control, Rear
License Lamp Supply
Voltage, Windshield
Washer Relay Control, Run/
Crank Relay Coil Control,
Cruise/Electronic Torque
Control/Torque Converter
Clutch Brake Signal, Run
Ignition 3 Voltage
F2 –
F3 –
F4 STR/WHL/CNTL –Steering
Wheel Controls Fuses
Usage
F5 –
BCM 2–Body Control
Module 2 –Interior Lamp
Control, Accessory
Voltage (1), Backup Lamp
Relay Control, Park Lock
Solenoid Control, Trailer
Brake Apply Signal
F6 –
F7 –
F8 MIR WNDW MDL –Mirror
Window Module
F9 I/P CLUSTER –Instrument
Panel Cluster
F10 –
F11 BCM 8 –Body Control
Module 8 –Door Lock
Actuator Lock Control 2,
Door Lock Control (2), Door
Lock Actuator Unlock
Control
F12 –
F13 OnStar/HVAC Fuses
Usage
F14 RDO/INFOTMNT –Radio/
Infotainment
F15 BCM 6 –Body Control
Module 6 –LED Backlight
Dimming Control, Interior
Lamps, Lights Exterior
Reverse/Backup Lamps
Direct Drive, Stop Lamp
Relay Coil Supply Voltage
F16 CGM –Communication
Gateway Module
F17 BCM 4 –Body Control
Module 4 –Left Headlamp
Low Beam Supply Voltage,
Right Park Lamp Supply
Voltage, Left Rear Stop
Lamp Supply Voltage, Right
Rear Park Lamp Supply
Voltage
F18 AIRBAG/SDM/AOS MDL –
Airbag/Sensing and
Diagnostic Module/
Automatic Occupant
Sensing Module
F19 –

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266 Vehicle Care
FusesUsage
F20 –
AMP–Amplifier
F21 –
F22 –
F23 DLC/USB FRT –Data Link
Connector/USB Front
F24 HVAC IGN/AUX HTR –
HVAC Ignition/Auxiliary
Heater
F25 BCM 7 –Body Control
Module 7 –Right Rear Stop
Lamp Supply Voltage, Left
Front Turn Signal Lamp
Supply Voltage, Standing
Lamp Relay Control
F26 –
F27 –
F28 I/P IGN/AOS DISPLY –
Instrument Panel Cluster/
Automatic Occupant
Sensing Display Fuses
Usage
F29 MISC RUN/CRNK –Rear
Vision Camera/Transfer
Case Control Module
(4WD)/Inside Rear View
Mirror
F30 –
F31 FRT CAMERA/RPA –Front
Camera/Rear Park Assist
F32 SWC BKLT –Steering
Wheel Controls
Backlighting
F33 HTD STR WHL/CGM_IGN –
Heated Steering Wheel/
Communication Gateway
Module Ignition
F34 VENT SEAT FRT –Front
Vented Seats
F35 PRNDL DISPLY/WCM/USB RR–Park/Reverse/Neutral/
Drive/Low Display/Wireless
Charging Module/USB Rear
F36 DLIS –Discrete Logic
Ignition Sensor
F37 – Fuses
Usage
F38 –
F39 APO 2 –Auxiliary Power
Outlet 2
F40 –
F41 APO 1/LTR –Auxiliary
Power Outlet 1/Cigarrette
Lighter
F42 LT PWR WNDW –Left
Power Window
F43 DRVR PWR SEAT –Driver
Power Seat
F44 APO –Auxiliary Power
Outlet
F45 RT PWR WNDW –Right
Power Window
F46 PASS PWR SEAT –
Passenger Power Seats
Relays Usage
K1 RAP/ACCY –Retained
Accessory Power
K2 Run/Crank
K3 –

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Vehicle Care 271
Tire Terminology and Definitions
Air Pressure:The amount of air inside
the tire pressing outward on each
square inch of the tire. Air pressure is
expressed in kPa (kilopascal) or psi
(pounds per square inch).
Accessory Weight
:The combined
weight of optional accessories. Some
examples of optional accessories are
automatic transmission, power
windows, power seats, and air
conditioning.
Aspect Ratio
:The relationship of a
tire's height to its width.
Belt
:A rubber coated layer of cords
between the plies and the tread. Cords
may be made from steel or other
reinforcing materials.
Bead
:The tire bead contains steel
wires wrapped by steel cords that hold
the tire onto the rim.
Bias Ply Tire
:A pneumatic tire in which
the plies are laid at alternate angles
less than 90 degrees to the centerline
of the tread. Cold Tire Pressure
:The amount of air
pressure in a tire, measured in kPa
(kilopascal) or psi (pounds per square
inch) before a tire has built up heat
from driving. See Tire Pressure0273.
Curb Weight
:The weight of a motor
vehicle with standard and optional
equipment including the maximum
capacity of fuel, oil, and coolant, but
without passengers and cargo.
DOT Markings
:A code molded into the
sidewall of a tire signifying that the tire
is in compliance with the U.S.
Department of Transportation (DOT)
Motor Vehicle Safety Standards. The
DOT code includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also identify the
tire manufacturer, production plant,
brand, and date of production.
GVWR
:Gross Vehicle Weight Rating.
See Vehicle Load Limits 0178.
GAWR FRT
:Gross Axle Weight Rating
for the front axle. See Vehicle Load
Limits 0178. GAWR RR
:Gross Axle Weight Rating
for the rear axle. See Vehicle Load
Limits 0178.
Intended Outboard Sidewall
:The side
of an asymmetrical tire that must
always face outward when mounted on
a vehicle.
Kilopascal (kPa)
:The metric unit for air
pressure.
Light Truck (LT-Metric) Tire
:A tire used
on light duty trucks and some
multipurpose passenger vehicles.
Load Index
:An assigned number
ranging from 1 to 279 that corresponds
to the load carrying capacity of a tire.
Maximum Inflation Pressure
:The
maximum air pressure to which a cold
tire can be inflated. The maximum air
pressure is molded onto the sidewall.
Maximum Load Rating
:The load rating
for a tire at the maximum permissible
inflation pressure for that tire.

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272 Vehicle Care
Maximum Loaded Vehicle Weight:The
sum of curb weight, accessory weight,
vehicle capacity weight, and production
options weight.
Normal Occupant Weight
:The number
of occupants a vehicle is designed to
seat multiplied by 68 kg (150 lb). See
Vehicle Load Limits 0178.
Occupant Distribution
:Designated
seating positions.
Outward Facing Sidewall
:The side of
an asymmetrical tire that has a
particular side that faces outward when
mounted on a vehicle. The side of the
tire that contains a whitewall, bears
white lettering, or bears manufacturer,
brand, and/or model name molding
that is higher or deeper than the same
moldings on the other sidewall of
the tire.
Passenger (P-Metric) Tire
:A tire used
on passenger cars and some light duty
trucks and multipurpose vehicles. Recommended Inflation Pressure
:
Vehicle manufacturer's recommended
tire inflation pressure as shown on the
tire placard. See
Tire Pressure0273 and
Vehicle Load Limits 0178.
Radial Ply Tire
:A pneumatic tire in
which the ply cords that extend to the
beads are laid at 90 degrees to the
centerline of the tread.
Rim
:A metal support for a tire and
upon which the tire beads are seated.
Sidewall
:The portion of a tire between
the tread and the bead.
Speed Rating
:An alphanumeric code
assigned to a tire indicating the
maximum speed at which a tire can
operate.
Traction
:The friction between the tire
and the road surface. The amount of
grip provided.
Tread
:The portion of a tire that comes
into contact with the road. Treadwear Indicators
:Narrow bands,
sometimes called wear bars, that show
across the tread of a tire when only
1.6 mm (1/16 in) of tread remains. See
When It Is Time for New Tires 0278.
UTQGS (Uniform Tire Quality Grading
Standards)
:A tire information system
that provides consumers with ratings
for a tire's traction, temperature, and
treadwear. Ratings are determined by
tire manufacturers using government
testing procedures. The ratings are
molded into the sidewall of the tire.
See Uniform Tire Quality Grading 0281.
Vehicle Capacity Weight
:The number
of designated seating positions
multiplied by 68 kg (150 lb) plus the
rated cargo load. See Vehicle Load
Limits 0178.
Vehicle Maximum Load on the Tire
:
Load on an individual tire due to curb
weight, accessory weight, occupant
weight, and cargo weight.
Vehicle Placard
:A label permanently
attached to a vehicle showing the
vehicle capacity weight and the original

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Vehicle Care 275
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
pressure shown on the Tire and Loading
Information label. SeeVehicle Load Limits
0 178.
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. If the vehicle has DIC
buttons, tire pressure levels can be viewed. For additional information and details about
the DIC operation and displays, see
Driver
Information Center (DIC) (Base Level) 093 or
Driver Information Center (DIC) (Uplevel)
0 96.
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
0 178, for an example of the Tire and
Loading Information label and its location.
Also see Tire Pressure 0273.
The TPMS can warn about a low tire
pressure condition but it does not replace
normal tire maintenance. See Tire Inspection
0 277, Tire Rotation 0277 and
Tires 0267.
Caution
Tire sealant materials are not all the
same. A non-approved tire sealant could
damage the TPMS sensors. TPMS sensor
(Continued)
Caution (Continued)
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.
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.