check engine light GMC ENVOY XL 2004 User Guide

Avoid needless heavy braking. Some people drive
in spurts — heavy acceleration followed by heavy
braking — rather than keeping pace with traffic. This is a
mistake. Your brakes may not have time to cool between
hard stops. Your brakes will wear out much faster if you
do a lot of heavy braking. If you keep pace with the traffic
and allow realistic following distances, you will eliminate
a lot of unnecessary braking. That means better braking
and longer brake life.
If your engine ever stops while you are driving, brake
normally but do not pump your brakes. If you do,
the pedal may get harder to push down. If your engine
stops, you will still have some power brake assist.
But you will use it when you brake. Once the power
assist is used up, it may take longer to stop and
the brake pedal will be harder to push.Anti-lock Brake System
Your vehicle has anti-lock brakes. ABS is an advanced
electronic braking system that will help prevent a
braking skid.
When you start your engine and begin to drive away, your
anti-lock brake system will check itself. You may hear a
momentary motor or clicking noise while this test is going
on. This is normal.
If there is a problem with
the anti-lock brake system,
this warning light will
stay on. SeeAnti-Lock
Brake System Warning
Light on page 3-42.
Along with ABS, your vehicle has a Dynamic Rear
Proportioning (DRP) system. If there is a DRP problem,
both the brake and ABS warning lights will come on
accompanied by a 10-second chime. The lights and
chime will come on each time the ignition is turned on
until the problem is repaired. See your dealer for service.
4-7

Put on extra clothing or wrap a blanket around you.
If you have no blankets or extra clothing, make body
insulators from newspapers, burlap bags, rags, oor
mats — anything you can wrap around yourself or
tuck under your clothing to keep warm.
You can run the engine to keep warm, but be careful.
{CAUTION:
Snow can trap exhaust gases under your
vehicle. This can cause deadly CO (carbon
monoxide) gas to get inside. CO could
overcome you and kill you. You can not see
it or smell it, so you might not know it is in
your vehicle. Clear away snow from around
the base of your vehicle, especially any that
is blocking your exhaust pipe. And check
around again from time to time to be sure
snow does not collect there.
Open a window just a little on the side of the
vehicle that is away from the wind. This will
help keep CO out.
Run your engine only as long as you must. This saves
fuel. When you run the engine, make it go a little faster
than just idle. That is, push the accelerator slightly. This
uses less fuel for the heat that you get and it keeps the
battery charged. You will need a well-charged battery to
restart the vehicle, and possibly for signaling later on with
your headlamps. Let the heater run for a while.
4-43

Notice:Use only engine oil identied as meeting
GM Standard GM6094M and showing the American
Petroleum Institute Certied For Gasoline Engines
starburst symbol. Failure to use the recommended
oil can result in engine damage not covered by
your warranty.
GM Goodwrench
®oil meets all the requirements for
your vehicle.
If you are in an area of extreme cold, where the
temperature falls below−20°F (−29°C), it is
recommended that you use either an SAE 5W-30
synthetic oil or an SAE 0W-30 oil. Both will provide
easier cold starting and better protection for your
engine at extremely low temperatures.
Engine Oil Additives
Do not add anything to your oil. The recommended oils
with the starburst symbol that meet GM Standard
GM6094M are all you will need for good performance
and engine protection.
When to Change Engine Oil
(GM Oil Life System)
Your vehicle has a computer system that lets you know
when to change the engine oil and lter. This is based on
engine revolutions and engine temperature, and not on
mileage. Based on driving conditions, the mileage at
which an oil change will be indicated can vary
considerably. For the oil life system to work properly,
you must reset the system every time the oil is changed.
When the system has calculated that oil life has been
diminished, it will indicate that an oil change is necessary.
A CHANGE ENGINE OIL light will come on. Change your
oil as soon as possible within the next two times you stop
for fuel. It is possible that, if you are driving under the best
conditions, the oil life system may not indicate that an oil
change is necessary for over a year. However, your
engine oil and lter must be changed at least once a year
and at this time the system must be reset. Your dealer
has GM-trained people who will perform this work using
genuine GM parts and reset the system. It is also
important to check your oil regularly and keep it at the
proper level.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles (5 000 km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed.
5-19

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

If you want to get service information, seeService
Publications Ordering Information on page 7-12.
Owner Checks and Services on page 6-9tells you what
should be checked, when to check it and what you can
easily do to help keep your vehicle in good condition.
The proper replacement parts, uids and lubricants to
use are listed inRecommended Fluids and Lubricants
on page 6-13andNormal Maintenance Replacement
Parts on page 6-15. When your vehicle is serviced,
make sure these are used. All parts should be replaced
and all necessary repairs done before you or anyone
else drives the vehicle. We recommend the use of
genuine GM parts.
Scheduled Maintenance
When the CHANGE ENGINE OIL light comes on, it
means that service is required for your vehicle. Have your
vehicle serviced as soon as possible within the next
600 miles (1 000 km). It is possible that, if you are driving
under the best conditions, the engine oil life system may
not indicate that vehicle service is necessary for over a
year. However, your engine oil and lter must be changed
at least once a year and at this time the system must be
reset. Your GM Goodwrench dealer has GM-trained
service technicians who will perform this work using
genuine GM parts and reset the system.If the engine oil life system is ever reset accidentally,
you must service your vehicle within 3,000 miles
(5 000 km) since your last service. Remember to reset
the oil life system whenever the oil is changed. See
Engine Oil on page 5-16for information on the Engine
Oil Life System and resetting the system.
When the CHANGE ENGINE OIL light appears, certain
services, checks and inspections are required.
Required services are described in the following for
“MaintenanceI” and “MaintenanceII.” Generally,
it is recommended that your rst service be
MaintenanceI, your second service be MaintenanceII
and that you alternate MaintenanceIand MaintenanceII
thereafter. However, in some cases, MaintenanceII
may be required more often.
MaintenanceI— Use MaintenanceIif the CHANGE
ENGINE OIL light comes on within ten months since
vehicle was purchased or MaintenanceIIwas
performed.
MaintenanceII— Use MaintenanceIIif the previous
service performed was MaintenanceI. Always use
MaintenanceIIwhenever the light comes on ten months
or more since the last service or if the light has not
come on at all for one year.
6-4

Cassette Tape Messages.................................3-88
CD Adapter Kits.............................................3-88
CD Messages...............................3-76, 3-91, 3-105
Chains, Tires..................................................5-71
Charging System Light....................................3-39
Check
Engine Light...............................................3-43
Gages Warning Light...................................3-49
CHECK WASHER FLUID.................................3-62
Checking Brake Fluid......................................5-40
Checking Coolant............................................5-26
Checking Engine Oil........................................5-16
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-94
Child Restraints
Child Restraint Systems...............................1-33
Infants and Young Children...........................1-29
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-40
Older Children.............................................1-27
Securing a Child Restraint Designed for
the LATCH System...................................1-42
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-43
Securing a Child Restraint in the Center
Seat Position...........................................1-45
Securing a Child Restraint in the Right
Front Seat Position...................................1-46Child Restraints (cont.)
Top Strap...................................................1-37
Top Strap Anchor Location............................1-39
Where to Put the Restraint...........................1-36
Chime Level Adjustment.................................3-122
Cigarette Lighter.............................................3-21
Cleaning
Inside of Your Vehicle..................................5-88
Outside of Your Vehicle................................5-91
Underbody Maintenance...............................5-94
Weatherstrips..............................................5-91
Cleaning Aluminum Wheels..............................5-93
Cleaning Exterior Lamps/Lenses.......................5-91
Cleaning Fabric/Carpet....................................5-88
Cleaning Glass Surfaces..................................5-90
Cleaning Interior Plastic Components.................5-90
Cleaning Leather............................................5-90
Cleaning the Top of the Instrument Panel...........5-90
Cleaning the Video Screen.............................3-117
Cleaning the Windshield, Backglass and
Wiper Blades..............................................5-92
Cleaning Tires................................................5-93
Cleaning Vinyl................................................5-90
Climate Control System
Climate Controls Personalization....................3-34
Dual..........................................................3-22
Dual Automatic............................................3-25
Rear..........................................................3-31
3

Driving (cont.)
Hill and Mountain Roads..............................4-38
In Rain and on Wet Roads...........................4-31
Winter........................................................4-40
Driving Across an Incline..................................4-26
Driving Downhill..............................................4-24
Driving in Mud, Sand, Snow or Ice....................4-28
Driving in Water..............................................4-28
Driving On Grades..........................................4-63
Driving on Off-Road Hills.................................4-21
Driving on Snow or Ice....................................4-41
Driving Through Deep Standing Water...............4-33
Driving Through Flowing Water.........................4-33
Driving Uphill..................................................4-22
Driving with a Trailer.......................................4-61
Dual Automatic Climate Control System.............3-25
Dual Climate Control System............................3-22
DVD
Rear Seat Entertainment System..................3-106
DVD Distortion..............................................3-117
DVD Messages.............................................3-117
DVD Player..................................................3-110
E
Electrical System
Add-On Equipment......................................5-96
Fuses and Circuit Breakers...........................5-97
Headlamps.................................................5-96Electrical System (cont.)
Power Windows and Other Power Options......5-96
Windshield Wiper Fuses...............................5-96
Electronically Controlled Air Suspension
System......................................................4-54
Emergency Release for Opening Liftgate............2-14
Emissions Inspection and Maintenance
Programs...................................................3-45
Engine
Air Cleaner/Filter.........................................5-21
Battery.......................................................5-42
Change Engine Oil Light...............................3-47
Check and Service Engine Soon Light............3-43
Coolant......................................................5-24
Coolant Heater............................................2-23
Coolant Temperature Gage...........................3-42
Drive Belt Routing.......................................6-16
Engine Compartment Overview......................5-12
Exhaust.....................................................2-34
Fan Noise..................................................5-36
Oil .............................................................5-16
Overheating................................................5-28
Reduced Power Light...................................3-48
Starting......................................................2-21
Engine Compartment Fuse Block......................5-97
ENGINE COOLANT HOT/ENGINE
OVERHEATED............................................3-61
Engine Oil Additives........................................5-19
Entry Lighting.................................................3-19
Environmental Concerns..................................4-18
5

Erasing HomeLink®Buttons..............................2-45
Event Data Recorders (EDR)............................7-10
Exit Lighting...................................................3-19
Express Down Window....................................2-16
Extender, Safety Belt.......................................1-26
Exterior Lamps...............................................3-16
F
Filter
Engine Air Cleaner......................................5-21
Finding a Program Type (PTY)
Station (RDS and XM™)..............3-69, 3-80, 3-95
Finding a Station............................3-67, 3-78, 3-93
Finish Care....................................................5-92
Finish Damage...............................................5-93
Fixed Mast Antenna.......................................3-122
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-73
Flat Tire, Changing.........................................5-74
Fluid
Automatic Transmission................................5-22
Power Steering...........................................5-37
Windshield Washer......................................5-38
FM Stereo....................................................3-120
Fog Lamps....................................................3-18
Following Distance..........................................4-62
Four-Wheel Drive....................................2-26, 5-49
Front Axle......................................................5-50Front Storage Area.........................................2-47
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-50
Gasoline Octane........................................... 5-4
Gasoline Specications.................................. 5-5
Low Warning Light.......................................3-50
Fuel Information..............................................3-52
FUEL LEVEL LOW.........................................3-62
Fuses
Fuses and Circuit Breakers...........................5-97
Windshield Wiper.........................................5-96
G
Gage
Check Gages Warning Light..........................3-49
Engine Coolant Temperature.........................3-42
Fuel..........................................................3-50
Oil Pressure...............................................3-46
Speedometer..............................................3-37
Tachometer.................................................3-37
Voltmeter Gage...........................................3-40
Garage Door Opener.......................................2-42
6

Gasoline
Octane........................................................ 5-4
Specications............................................... 5-5
Gate Ajar Light...............................................3-49
Gate Operator and Canadian Programming........2-45
Getting Familiar with Off-Road Driving................4-19
Glove Box.....................................................2-46
GM Mobility Program for Persons
with Disabilities............................................. 7-6
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-5
Headlamp High/Low-Beam Changer.................... 3-9
Headlamp Washer..........................................3-12
Headlamps....................................................5-51
Bulb Replacement.......................................5-51
Electrical System.........................................5-96
Front Turn Signal and Sidemarker Lamps.......5-51
Halogen Bulbs............................................5-51
Headphones.................................................3-107
Heated Seats................................................... 1-3
Highway Hypnosis...........................................4-37
Hill and Mountain Roads..................................4-38
Hitches..........................................................4-59
HomeLink
®Transmitter....................................2-42HomeLink
®Transmitter, Programming................2-43
Hood
Checking Things Under................................5-10
Release.....................................................5-10
Horn............................................................... 3-7
How to Add Coolant to the Coolant
Recovery Tank............................................5-32
How to Add Coolant to the Radiator..................5-34
How to Add Fluid............................................5-24
How to Check Lubricant...................................5-48
How to Check Power Steering Fluid..................5-37
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-14
Hydroplaning..................................................4-32
I
ICE POSSIBLE..............................................3-62
If No Steam Is Coming From Your Engine..........5-29
If Steam Is Coming From Your Engine...............5-28
If the Light Is Flashing.....................................3-44
If the Light Is On Steady.................................3-44
If You Are Caught in a Blizzard.........................4-42
If You Are Stuck in Sand, Mud, Ice or Snow.......4-44
If You Do Decide To Pull A Trailer.....................4-56
Ignition Positions.............................................2-20
Infants and Young Children, Restraints...............1-29
7

Ination - Tire Pressure...................................5-64
Instrument Panel
Cluster.......................................................3-36
Overview..................................................... 3-4
Instrument Panel Brightness.............................3-18
Interior Lamps................................................3-18
J
Jump Starting.................................................5-43
K
Keyless Entry System....................................... 2-5
Keys............................................................... 2-3
L
Lamps
Exterior......................................................3-16
Interior.......................................................3-18
Lamps On Reminder.......................................3-17
Lap-Shoulder Belt...................................1-14, 1-22
LATCH System
Child Restraints...........................................1-40
Securing a Child Restraint Designed
or the LATCH System...............................1-42Leaving Your Vehicle.......................................2-13
Leaving Your Vehicle With the Engine
Running.....................................................2-32
LEFT REAR DOOR AJAR................................3-63
Liftgate Release..............................................2-14
Liftgate/Liftglass..............................................2-14
Liftglass/Liftgate..............................................2-14
Light
Air Bag Readiness.......................................3-38
Anti-Lock Brake System Warning...................3-42
Brake System Warning.................................3-40
Change Engine Oil......................................3-47
Charging System.........................................3-39
Check Gages Warning.................................3-49
Cruise Control.............................................3-48
Gate Ajar...................................................3-49
Low Fuel Warning.......................................3-50
Malfunction Indicator....................................3-43
Reduced Engine Power................................3-48
Safety Belt Reminder...................................3-38
Security.....................................................3-47
Service Four-Wheel-Drive Warning Light.........3-48
Lighted Visor Vanity Mirror...............................2-17
Listening to a DVD................................3-91, 3-105
Loading Your Vehicle.......................................4-49
Loading Your Vehicle for Off-Road Driving..........4-17
Locking Rear Axle...........................................4-11
Lockout Protection..........................................2-13
8