2004 GMC ENVOY XL warning light

City Driving
One of the biggest problems with city streets is the
amount of traffic on them. You will want to watch out for
what the other drivers are doing and pay attention to
traffic signals.Here are ways to increase your safety in city driving:
Know the best way to get to where you are
going. Get a city map and plan your trip into
an unknown part of the city just as you would for
a cross-country trip.
Try to use the freeways that rim and crisscross
most large cities. You will save time and energy.
SeeFreeway Driving on page 4-35.
Treat a green light as a warning signal. A traffic
light is there because the corner is busy enough
to need it. When a light turns green, and just before
you start to move, check both ways for vehicles
that have not cleared the intersection or may
be running the red light.
4-34

Winter DrivingHere are some tips for winter driving:
Have your vehicle in good shape for winter.
You may want to put winter emergency supplies
in your vehicle.
Also seeTires on page 5-55.
Include an ice scraper, a small brush or broom, a supply
of windshield washer uid, a rag, some winter outer
clothing, a small shovel, a ashlight, a red cloth and
reective warning triangles. And, if you will be driving
under severe conditions, include a small bag of sand,
a piece of old carpet or a couple of burlap bags to help
provide traction. Be sure you properly secure these items
in your vehicle.
4-40

How to Reset the CHANGE ENGINE OIL
Light
The GM Oil Life System calculates when to change your
engine oil and lter based on vehicle use. Anytime your
oil is changed, reset the system so it can calculate when
the next oil change is required. If a situation occurs where
you change your oil prior to a CHANGE ENGINE OIL
light being turned on, reset the system.
To reset the CHANGE ENGINE OIL light, do the
following:
1. Turn the ignition key to RUN with the engine off.
2. Fully press and release the accelerator pedal
slowly three times within ve seconds.
3. Turn the key to LOCK.
If the CHANGE ENGINE OIL light comes back on when
you start your vehicle, the engine oil life system has
not reset. Repeat the procedure.
For vehicles with the Driver Information Center, see
Driver Information Center (DIC) on page 3-51to reset
the system.
What to Do with Used Oil
Used engine oil contains certain elements that may be
unhealthy for your skin and could even cause cancer.
Do not let used oil stay on your skin for very long. Clean
your skin and nails with soap and water, or a good
hand cleaner. Wash or properly dispose of clothing or
rags containing used engine oil. See the manufacturer’s
warnings about the use and disposal of oil products.
Used oil can be a threat to the environment. If you
change your own oil, be sure to drain all the oil from
the lter before disposal. Never dispose of oil by putting
it in the trash, pouring it on the ground, into sewers,
or into streams or bodies of water. Instead, recycle it by
taking it to a place that collects used oil. If you have
a problem properly disposing of your used oil, ask your
dealer, a service station or a local recycling center
for help.
5-20

How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transmission uid to use. SeeRecommended
Fluids and Lubricants on page 6-13.
Add uid only after checking the transmission uid while
it is hot. (A cold check is used only as a reference.) If
the uid level is low, add only enough of the proper uid
to bring the level up to the HOT area for a hot check.
It doesn’t take much uid, generally less than one
pint (0.5 L).Don’t overll.
Notice:We recommend you use only uid labeled
DEXRON
®-III, because uid with that label is
made especially for your automatic transmission.
Damage caused by uid other than DEXRON
®-III
is not covered by your new vehicle warranty.
After adding uid, recheck the uid level as
described under “How to Check″.
When the correct uid level is obtained, push the
dipstick back in all the way; then ip the handle
down to lock the dipstick in place.
Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs rst, if you add
only DEX-COOL
®extended life coolant.
The following explains your cooling system and how
to add coolant when it is low. If you have a problem
with engine overheating, seeEngine Overheating
on page 5-28.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-24

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 specications.
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.
5-41

Uniform Tire Quality Grading
Quality grades can be found where applicable on the
tire sidewall between tread shoulder and maximum
section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, which grades tires by
treadwear, traction and temperature performance.
(This applies only to vehicles sold in the United States.)
The grades are molded on the sidewalls of most
passenger car tires. The Uniform Tire Quality Grading
system does not apply to deep tread, winter-type
snow tires, space-saver or temporary use spare tires,
tires with nominal rim diameters of 10 to 12 inches
(25 to 30 cm), or to some limited-production tires.
While the tires available on General Motors passenger
cars and light trucks may vary with respect to these
grades, they must also conform to federal safety
requirements and additional General Motors Tire
Performance Criteria (TPC) standards.
Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specied government test course.
For example, a tire graded 150 would wear one and
a half (1.5) times as well on the government course as
a tire graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from the norm
due to variations in driving habits, service practices and
differences in road characteristics and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA, A,
B, and C. Those grades represent the tire’s ability
to stop on wet pavement as measured under controlled
conditions on specied government test surfaces of
asphalt and concrete. A tire marked C may have poor
traction performance. Warning: The traction grade
assigned to this tire is based on straight-ahead braking
traction tests, and does not include acceleration,
cornering, hydroplaning, or peak traction characteristics.
5-68

A
Accessory Inator...........................................5-71
Accessory Power Outlets.................................3-21
Adding a Snow Plow or Similar Equipment.........4-55
Adding Washer Fluid.......................................5-38
Additional Program Information.........................7-10
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-96
Adjustable Throttle and Brake Pedal..................2-22
Adjusting the Speakers
(Balance/Fade)............................3-68, 3-80, 3-95
After Off-Road Driving.....................................4-29
Air Bag
Readiness Light..........................................3-38
Air Bag Systems.............................................1-49
How Does an Air Bag Restrain?....................1-56
Servicing Your Air Bag-Equipped Vehicle.........1-59
What Makes an Air Bag Inate?....................1-56
What Will You See After an Air Bag Inates?......1-57
When Should an Air Bag Inate?...................1-55
Where Are the Air Bags?..............................1-52
Air Cleaner/Filter, Engine.................................5-21
Airbag Sensing and Diagnostic Module (SDM)....7-10
All Overseas Locations...................................... 7-5
AM .............................................................3-120
Antenna, Fixed Mast......................................3-122
Antenna, XM™ Satellite Radio Antenna
System.....................................................3-122
Anti-lock Brake System..................................... 4-7Anti-Lock Brake, System Warning Light..............3-42
Appearance Care............................................5-88
Care of Safety Belts....................................5-91
Chemical Paint Spotting...............................5-94
Cleaning the Inside of Your Vehicle................5-88
Cleaning the Outside of Your Vehicle..............5-91
Finish Damage............................................5-93
Sheet Metal Damage...................................5-93
Underbody Maintenance...............................5-94
Vehicle Care/Appearance Materials................5-94
Weatherstrips..............................................5-91
Approaching a Hill..........................................4-21
Ashtrays........................................................3-21
Audio Output................................................3-109
Audio System(s).............................................3-64
Audio Steering Wheel Controls....................3-119
Care of Your Cassette Tape Player...............3-121
Care of Your CD and DVD Player................3-122
Care of Your CDs and DVDs.......................3-122
Chime Level Adjustment.............................3-122
Fixed Mast Antenna...................................3-122
Navigation/Radio System.............................3-106
Audio Systems
Radio Personalization.................................3-119
Audio System(s)
Radio with Cassette and CD.........................3-76
Radio with CD............................................3-65
Radio with Six-Disc CD................................3-92
Rear Seat Audio (RSA)...............................3-117
Setting the Time..........................................3-64
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Audio System(s) (cont.)
Theft-Deterrent Feature...............................3-119
Understanding Radio Reception...................3-120
XM™ Satellite Radio Antenna System...........3-122
Automatic Headlamp System............................3-16
Automatic Transfer Case..................................2-26
Automatic Transmission
Fluid..........................................................5-22
Operation...................................................2-24
B
Backglass Wiper Blade Replacement.................5-55
Backing Up....................................................4-62
Battery..........................................................5-42
BATTERY NOT CHARGING.............................3-61
Battery Replacement......................................... 2-7
Battery Run-Down Protection............................3-20
Before Leaving on a Long Trip.........................4-36
Before You Drive...........................................3-107
Before You Go Off-Roading..............................4-16
Brake
Parking......................................................2-29
System Warning Light..................................3-40
Brake Adjustment............................................5-41
Brake Fluid....................................................5-39
Brake Pedal, Throttle.......................................2-22
Brake Pedal Travel.........................................5-41Brake Wear...................................................5-41
Brakes..........................................................5-39
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-9
Break-In, New Vehicle.....................................2-19
Bulb Replacement...........................................5-51
Front Turn Signal and Sidemarker Lamps.......5-51
Halogen Bulbs............................................5-51
Headlamps.................................................5-51
Replacement Bulbs......................................5-53
Taillamps and Turn Signal Lamps..................5-52
Buying New Tires...........................................5-67
C
California Fuel.................................................. 5-5
Canada........................................................... 7-5
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-8
Capacities and Specications..........................5-109
Carbon Monoxide...................2-14, 2-34, 4-40, 4-55
Care of
Safety Belts................................................5-91
Your Cassette Tape Player..........................3-121
Your CD and DVD Player...........................3-122
Your CDs and DVDs..................................3-122
Cargo Cover..................................................2-52
Cargo Tie Downs............................................2-52
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