brake light GMC SIERRA DENALI 2004 User Guide

Trailer Wiring Harness
Your pickup is equipped with the eight-wire trailer
towing harness. This harness with a seven-pin universal
heavy-duty trailer connector is attached to a bracket
on the hitch platform.
The Center High-Mounted Stoplamp (CHMSL) wire is
tied next to the trailer wiring harness for use with a
trailer, slide-in camper or cap.The eight-wire harness contains the following trailer
circuits:
·Yellow: Left Stop/Turn Signal
·Dark Green: Right Stop/Turn Signal
·Brown: Taillamps
·White: Ground
·Light Green: Back-up Lamps
·Light Blue: Center High-Mounted
Stoplamp (CHMSL)
·Red: Battery Feed
·Dark Blue: Trailer Brake
If your trailer is equipped with electrical brakes, you can
get a jumper harness/electric trailer brake control
with a trailer battery feed fuse from your dealer. This
harness and fuse should be installed by your dealer or a
quali®ed service center.
If you need to tow a light-duty trailer with a standard
four-way round pin connector, you can also get an
adapter from your dealer.
4-69

Notice:If you need a new fuel cap, be sure to get
the right type. Your dealer can get one for you. If you
get the wrong type, it may not ®t properly. This may
cause your malfunction indicator lamp to light and
may damage your fuel tank and emissions system.
See
Malfunction Indicator Lamp on page 3-40.
Filling a Portable Fuel Container
{CAUTION:
Never ®ll a portable fuel container while it is in
your vehicle. Static electricity discharge from
the container can ignite the gasoline vapor.
You can be badly burned and your vehicle
damaged if this occurs. To help avoid injury to
you and others:
·Dispense gasoline only into approved
containers.
·Do not ®ll a container while it is inside a
vehicle, in a vehicle's trunk, pickup bed or
on any surface other than the ground.
CAUTION: (Continued)
CAUTION: (Continued)
·
Bring the ®ll nozzle in contact with the
inside of the ®ll opening before operating
the nozzle. Contact should be maintained
until the ®lling is complete.
·Do not smoke while pumping gasoline.
Checking Things Under
the Hood
{CAUTION:
Things that burn can get on hot engine parts
and start a ®re. These include liquids like fuel,
oil, coolant, brake ¯uid, windshield washer and
other ¯uids, and plastic or rubber. You or
others could be burned. Be careful not to drop
or spill things that will burn onto a hot engine.
5-8

A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-16.
B. Coolant Surge Tank. See
Engine Coolant on
page 5-21.
C. Air Cleaner/Filter Restriction Indicator. See
Engine
Air Cleaner/Filter on page 5-16.
D. Engine Oil Dipstick. See
Engine Oil on page 5-10.
E. Engine Oil Fill Cap. See
Engine Oil on page 5-10.
F. Automatic Transmission Dipstick. See
Automatic
Transmission Fluid on page 5-18.
G. Fan. See
Cooling System on page 5-28.
H. Remote Negative (-) Terminal (GND). See
Jump
Starting on page 5-41.
I. Remote Positive (+) Terminal. See
Jump Starting on
page 5-41.
J. Power Steering Fluid Reservoir. See
Power Steering
Fluid on page 5-34.
K. Brake Fluid Reservoir. See
Brakes on page 5-36.
L. Underhood Fuse Block. See
Fuses and Circuit
Breakers on page 5-105.
M. Battery. See
Battery on page 5-40.
N. Windshield Washer Fluid Reservoir. See
Windshield
Washer Fluid on page 5-35.
Engine Oil
If the CHECK OIL LEVEL light appears on the
instrument cluster, it means you need to check your
engine oil level right away. For more information,
see ªCHECK OIL LEVELº under
DIC Warnings and
Messages on page 3-57.
You should check your engine oil level regularly; this is
an added reminder.
Checking Engine Oil
It is a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil
must be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop. See
Engine Compartment Overview on page 5-10for
the location of the engine oil dipstick.
Turn off the engine and give the oil several minutes to
drain back into the oil pan. If you don't, the oil
dipstick might not show the actual level.
Pull out the dipstick and clean it with a paper towel or
cloth, then push it back in all the way. Remove it again,
keeping the tip down, and check the level.
5-11

Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that make
a high-pitched warning sound when the brake pads
are worn and new pads are needed. The sound
may come and go or be heard all the time your vehicle
is moving (except when you are pushing on the
brake pedal ®rmly).
{CAUTION:
The brake wear warning sound means that
soon your brakes will not work well. That
could lead to an accident. When you hear the
brake wear warning sound, have your vehicle
serviced.
Notice:Continuing to drive with worn-out brake
pads could result in costly brake repair.
Some driving conditions or climates may cause a brake
squeal when the brakes are ®rst applied or lightly
applied. This does not mean something is wrong with
your brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly tighten wheel nuts in
the proper sequence to GM torque speci®cations.
Brake linings should always be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not return to
normal height, or if there is a rapid increase in
pedal travel. This could be a sign of brake trouble.
Brake Adjustment
Every time you make a brake stop, your disc brakes
adjust for wear.
5-39

(A) Light Truck (LT-Metric) Tire:The United States
version of a metric tire sizing system. The letter ªLTº as
the ®rst two characters in the tire size means a light
truck tire engineered to standards set by the U. S. Tire
and Rim Association.
(B) Tire Width:The three-digit number indicates the
tire section width in millimeters from sidewall to sidewall.
(C) Aspect Ratio:A two-digit number that indicates
the tire height-to-width measurements. For example, if
the tire size aspect ratio is ª75,º as shown in item ªCº of
the illustration, it would mean that the tire's sidewall is
75% as high as it is wide.(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire. The
letter ªRº means radial ply construction; the letter ªDº
means diagonal or bias ply construction; and the
letter ªBº means belted-bias ply construction.
(E) Rim Diameter:Diameter of the wheel in inches.
(F) Service Description:The service description
indicates the load range and speed rating of a tire.
The load index can range from 1 to 279. Speed ratings
range from ªAº to ªZº. The light truck tire size example
above shows dual or single tire con®gurations.Tire Terminology and De®nitions
Air Pressure:The amount of air inside the tire pressing
outward on each square inch of the tire. Air pressure
is expressed in pounds per square inch (psi) or
kilopascal (kPa).
Accessory Weight:This means the combined weight
of optional accessories. Some examples of optional
accessories are, automatic transmission, power steering,
power brakes, 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 that is located
between the plies and the tread. Cords may be made
from steel or other reinforcing materials. Light Truck (LT-Metric) Tire
5-64

Fuses Usage
LH HID Not Used
DRL Daytime Running Lamps
IPC/DICInstrument Panel
Cluster/Driver Information
Center
HVAC/ECAS Climate Control Controller
CIG LTR Cigarette Lighter
HI HDLP - RT High Beam Headlamp - Right
HDLP-LOW Headlamp Low Beam Relay
A/C COMP Air Conditioning Compressor
A/C COMPAir Conditioning Compressor
Relay
RR WPR Not Used
RADIO Audio System
SEO B1Mid Bussed Electrical Center,
Rear Heated Seats,
HomeLink
LO HDLP - LT Headlamp Low Beam - LeftFuses Usage
BTSIBrake Transmission Shift
Interlock System
CRANK Starting System
LO HDLP - RT Headlamp Low Beam - Right
FOG LP Fog Lamp Relay
FOG LP Fog Lamps
HORN Horn Relay
W/S WASHWindshield Washer
Pump Relay
W/S WASH Windshield Washer Pump
INFOOnStar/Rear Seat
Entertainment
RADIO AMP Radio Ampli®er
RH HID Not Used
HORN Horn
EAP Not Used
TREC All-Wheel Drive Module
SBA Supplemental Brake Assist
5-113

Maintenance Footnotes
²The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to
the completion of the vehicle's useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the
maintenance be recorded.
#Lubricate the front suspension, ball joints, steering
linkage, transmission shift linkage and parking
brake cable guides. Ball joints should not be lubricated
unless their temperature is 10ÉF (-12ÉC) or higher,
or they could be damaged.
(a)Visually inspect brake lines and hoses for proper
hook-up, binding, leaks, cracks, cha®ng, etc. Inspect
disc brake pads for wear and rotors for surface
condition. Inspect other brake parts, including calipers,
parking brake, etc.
(b)Visually inspect front and rear suspension and
steering system for damaged, loose or missing parts,
signs of wear or lack of lubrication. Inspect power
steering lines and hoses for proper hook-up, binding,
leaks, cracks, cha®ng, etc. Visually check constant
velocity joints, rubber boots and axle seals for leaks.
(c)Visually inspect hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
®ttings and clamps; replace with genuine GM parts as
needed. To help ensure proper operation, a pressure test
of the cooling system and pressure cap and cleaning the
outside of the radiator and air conditioning condenser is
recommended at least once a year.
(d)Visually inspect wiper blades for wear or cracking.
Replace blade inserts that appear worn or damaged
or that streak or miss areas of the windshield.
(e)Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced. Also look for any opened or broken air bag
coverings, and have them repaired or replaced. (The air
bag system does not need regular maintenance.)
(f)Lubricate all key lock cylinders, body door hinges,
hood latch assembly, secondary latch, pivots, spring
anchor, release pawl, tailgate hinges, tailgatelinkage,
tailgate handle pivot points, latch bolt, fuel door
hinge, locks and folding seat hardware. More frequent
lubrication may be required when exposed to a corrosive
environment. Applying silicone grease on weatherstrips
with a clean cloth will make them last longer, seal
better and not stick or squeak.
6-8

A
Accessory Power Outlets.................................3-18
Adding Washer Fluid.......................................5-36
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-5
Add-On Equipment..........................................4-54
Adjusting the Speakers (Balance/Fade)..............3-68
After Off-Road Driving.....................................4-31
Air Bag
Off Light.....................................................3-30
Passenger Status Indicator...........................3-33
Readiness Light..........................................3-30
Air Bag Systems.............................................1-62
Adding Equipment to Your Air Bag-Equipped
Vehicle...................................................1-78
Air Bag Off Switch.......................................1-68
How Does an Air Bag Restrain?....................1-66
Passenger Sensing System...........................1-73
Servicing Your Air Bag-Equipped Vehicle.........1-78
What Makes an Air Bag In¯ate?....................1-66
What Will You See After an Air Bag
In¯ates?..................................................1-66
When Should an Air Bag In¯ate?...................1-65
Where Are the Air Bags?..............................1-64Air Cleaner/Filter, Engine.................................5-16
Air Conditioning..............................................3-23
Airbag Sensing and Diagnostic Module (SDM)...... 7-9
All Overseas Locations...................................... 7-5
All-Wheel Drive...............................................5-46
All-Wheel Drive (AWD) System.........................2-25
AM ...............................................................3-86
Antenna, Fixed Mast.......................................3-88
Antenna, XMŸ Satellite Radio Antenna
System......................................................3-88
Anti-lock Brake System..................................... 4-7
Anti-Lock Brake System Warning Light...............3-38
Appearance Care............................................5-96
Care of Safety Belts....................................5-98
Chemical Paint Spotting..............................5-102
Cleaning the Inside of Your Vehicle................5-96
Cleaning the Outside of Your Vehicle..............5-99
Finish Damage..........................................5-102
Sheet Metal Damage..................................5-101
Underbody Maintenance.............................5-102
Vehicle Care/Appearance Materials...............5-103
Weatherstrips..............................................5-98
Approaching a Hill..........................................4-23
Ashtrays........................................................3-19
1

Audio System(s).............................................3-64
Audio Steering Wheel Controls......................3-85
Care of Your Cassette Tape Player................3-87
Care of Your CD Player...............................3-88
Care of Your CDs........................................3-88
CD Changer...............................................3-82
Chime Level Adjustment...............................3-88
Fixed Mast Antenna.....................................3-88
Navigation/Radio System..............................3-79
Radio with Cassette and CD.........................3-65
Rear Seat Audio (RSA)................................3-80
Setting the Time..........................................3-64
Theft-Deterrent Feature................................3-85
Understanding Radio Reception.....................3-86
XMŸ Satellite Radio Antenna System............3-88
Automatic Dimming Mirror Operation..................2-32
Automatic Headlamp System............................3-13
Automatic Transmission
Fluid..........................................................5-18
Operation...................................................2-22
B
Backing Up....................................................4-66
Battery..........................................................5-40
BATTERY NOT CHARGING.............................3-58
Battery Replacement......................................... 2-5
Battery Run-Down Protection............................3-18Battery Warning Light......................................3-35
Before Leaving on a Long Trip.........................4-38
Before You Go Off-Roading..............................4-18
Brake
Parking......................................................2-25
System Warning Light..................................3-37
Brake Adjustment............................................5-39
Brake Fluid....................................................5-36
Brake Pedal Travel.........................................5-39
Brake Wear...................................................5-39
Brakes..........................................................5-36
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-18
BUCKLE PASSENGER....................................3-58
BUCKLE SEATBELT.......................................3-58
Bulb Replacement...........................................5-49
Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp............................................5-54
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-50
Halogen Bulbs............................................5-49
Headlamps.................................................5-49
Pickup Box Identi®cation and Fender
Marker Lamps.........................................5-55
Replacement Bulbs......................................5-57
Roof Marker Lamps.....................................5-52
Taillamps....................................................5-56
Buying New Tires...........................................5-70
2

C
California Fuel.................................................. 5-5
Canada........................................................... 7-5
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Speci®cations..........................5-114
Car Washes for QUADRASTEERŸ Equipped
Vehicles.....................................................4-14
Carbon Monoxide...................4-42, 4-58, 2-11, 2-29
Care of
Safety Belts................................................5-98
Your Cassette Tape Player............................3-87
Your CD Player...........................................3-88
Your CDs ...................................................3-88
Cargo Lamp...................................................3-15
CARGO LAMP ON.........................................3-58
Cassette Tape Messages.................................3-76
CD Adapter Kits.............................................3-76
CD Changer...................................................3-82
CD Changer Errors.........................................3-84
CD Functions.................................................3-83
CD Messages................................................3-79
Center Console Storage Area...........................2-42
Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp...............................................5-54
Center Instrument Panel Fuse Block................5-108
Center Passenger Position, Safety Belts.............1-22
Chains, Tires..................................................5-74CHANGE ENGINE OIL....................................3-58
Check
Engine Light...............................................3-40
Check Engine Light.........................................3-40
CHECK OIL LEVEL.........................................3-59
CHECK WASHER FLUID.................................3-59
Checking Brake Fluid......................................5-37
Checking Coolant............................................5-23
Checking Engine Oil........................................5-11
Checking Things Under the Hood....................... 5-8
Checking Your Restraint Systems......................1-79
Chemical Paint Spotting.................................5-102
Child Restraints
Child Restraint Systems...............................1-36
Infants and Young Children...........................1-32
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-44
Older Children.............................................1-29
Securing a Child Restraint Designed for the
LATCH System........................................1-46
Securing a Child Restraint in a Center Rear
Seat Position...........................................1-54
Securing a Child Restraint in a Rear Outside
Seat Position...........................................1-51
Securing a Child Restraint in the Right Front
Seat Position...........................................1-56
Top Strap...................................................1-40
Top Strap Anchor Location............................1-42
Where to Put the Restraint...........................1-39
3