2004 CHEVROLET SILVERADO service reset

Care of Your Cassette Tape Player
A tape player that is not cleaned regularly can cause
reduced sound quality, ruined cassettes, or a damaged
mechanism. Cassette tapes should be stored in their
cases away from contaminants, direct sunlight, and
extreme heat. If they are not, they may not operate
properly or may cause failure of the tape player.
The tape player should be cleaned regularly after every
50 hours of use. The radio may display CLEAN to
indicate that the tape player has been used for 50 hours
without resetting the tape clean timer. If this message
appears on the display, the cassette tape player
needs to be cleaned. It will still play tapes, but it should
be cleaned as soon as possible to prevent damage
to the tapes and player. If there is a reduction in sound
quality, try a known good cassette to see if the tape
or the tape player is at fault. If this other cassette has no
improvement in sound quality, clean the tape player.
For best results, use a scrubbing action, non-abrasive
cleaning cassette with pads which scrub the tape head as
the hubs of the cleaner cassette turn. The recommended
cleaning cassette is available through your dealer.
When cleaning the cassette tape player with the
recommended non-abrasive cleaning cassette, it is
possible that the cassette may eject, because the cut
tape detection feature on the radio may recognize it as a
broken tape, in error.To prevent the cleaning cassette from being ejected,
use the following steps:
1. Turn the ignition on.
2. Turn the radio off.
3. Press and hold the TAPE DISC button for ve
seconds. READY will appear on the display and
the cassette symbol will ash for ve seconds.
4. Insert the scrubbing action cleaning cassette.
5. Eject the cleaning cassette after the manufacturer’s
recommended cleaning time.
When the cleaning cassette has been ejected, the
cut tape detection feature will be active again.
A non-scrubbing action, wet-type cleaner which uses a
cassette with a fabric belt to clean the tape head
can be used. This type of cleaning cassette will not
eject on its own. A non-scrubbing action cleaner may not
clean as thoroughly as the scrubbing type cleaner.
The use of a non-scrubbing action, dry-type cleaning
cassette is not recommended.
After the player is cleaned, press and hold the eject
button for ve seconds to reset the CLEAN indicator.
The radio will display --- or CLEANED to show the
indicator was reset.
Cassettes are subject to wear and the sound
quality may degrade over time. Always make sure
the cassette tape is in good condition before the tape
player is serviced.
3-129

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 message 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 service 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.
How to Reset the CHANGE ENGINE OIL
Message
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 message being turned on, reset
the system.
To reset the CHANGE ENGINE OIL message, see “GM
Oil Life System” underDIC Operation and Displays
on page 3-54for vehicles equipped with the DIC, or do
the following:
1. Turn the ignition key to RUN with the engine off.
2. Fully press and release the accelerator pedal three
times within ve seconds.
If the OIL LIFE RESET message ashes for
10 seconds, the system is resetting.
3. Turn the key to LOCK.
If the CHANGE ENGINE OIL message comes back on
when you start your vehicle, the engine oil life system
has not reset. Repeat the procedure. If it still does
not reset, see your dealer for service.
5-24

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 6-16. 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 message 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 5-20for information on the Engine
Oil Life System and resetting the system.
When the CHANGE ENGINE OIL message 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 message comes on within ten months
since vehicle was purchased or MaintenanceII
was performed.
MaintenanceII— Use MaintenanceIIif the previous
service performed was MaintenanceI. Always use
MaintenanceIIwhenever the message comes on ten
months or more since the last service or if the message
has not come on at all for one year.
6-4

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. Reset oil life system. SeeEngine Oil on
page 5-20.An Emission Control Service.••
Allison transmission only: Replace external control-main lter only at the rst
maintenance service performed on the vehicle.
Lubricate chassis components.See footnote #.••
Visually check for any leaks or damage.See footnote (j).••
Inspect engine air cleaner lter or change indicator (if equipped). If necessary,
replace lter. SeeEngine Air Cleaner/Filter on page 5-25.An Emission Control
Service. See footnote †.••
Rotate tires and check ination pressures and wear. SeeTires on page 5-74.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid
as needed.••
Perform any needed additional services. See “Additional Required Services” in
this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Check transmission uid level and add uid as needed.•
6-5

Mirrors (cont.)
Outside Power Mirrors..................................2-62
Outside West Coast-Type Mirrors...................2-61
Model Reference................................................ vi
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-22
Noise Control System, Tampering......................5-61
Normal Maintenance Replacement Parts............6-16
O
Odometer......................................................3-35
Off-Road Driving.............................................4-21
Off-Road Recovery..........................................4-18
Oil
Engine.......................................................5-20
Pressure Gage............................................3-50
OIL LIFE RESET............................................3-67
Oil Life System...............................................3-57
OIL PRESSURE LOW.....................................3-67
Older Children, Restraints................................1-32
Online Owner Center........................................ 7-3
OnStar
®Personal Calling.................................2-66
OnStar®Services............................................2-66
OnStar®Steering Wheel Controls......................2-67
OnStar®System.............................................2-65OnStar
®Virtual Advisor....................................2-67
Other Warning Devices...................................... 3-6
Outlet Adjustment...................................3-24, 3-32
Outside
Automatic Dimming Mirror.............................2-64
Camper-Type Mirrors....................................2-61
Convex Mirror.............................................2-65
Curb View Assist Mirrors..............................2-64
Heated Mirrors............................................2-65
Manual Mirrors............................................2-60
Power Foldaway Mirrors...............................2-63
Power Mirrors.............................................2-62
West Coast-Type Mirrors..............................2-61
Outside Power Camper-Type Mirror...................2-62
Overdrive Disable...........................................3-52
Overdrive Disable (Allison Transmission
®) ...........2-30
Overheated Engine Protection Operating Mode
(V8 Engines Only).......................................5-38
Overseas – Customer Assistance........................ 7-5
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
Owner’s Information........................................7-12
P
Parental Control............................................3-114
Park (P)
Shifting Into................................................2-49
Shifting Out of............................................2-51
11

Service Bulletins.............................................7-12
Service Manuals.............................................7-11
SERVICE RIDE CONTROL..............................3-69
Setting Preset PTYs (RDS Only).......3-80, 3-91, 3-105
Setting Preset Stations..........3-74, 3-78, 3-89, 3-103
Setting the Time
Radios with Radio Data Systems (RDS).........3-73
Radios without Radio Data Systems (RDS).....3-72
Setting the Tone
(Bass/Treble)....................3-74, 3-78, 3-89, 3-103
Sheet Metal Damage.....................................5-120
Shift Speeds..................................................2-35
Shifting Into Park (P).......................................2-49
Shifting Out of Park (P)...................................2-51
Single Stage Air Bags.....................................1-71
Single Stage vs. Dual Stage Air Bags................1-70
Six-Speed (VORTEC™ 8100 V8 and
DURAMAX™ 6600 V8 Engines)...................2-33
Skidding........................................................4-20
Sliding Rear Windows.....................................2-19
Snow Plow....................................................4-63
Some Other Rainy Weather Tips.......................4-40
Spare Tire....................................................5-113
Special Fabric Cleaning Problems....................5-115
Specications, Capacities...............................5-132
Speedometer..................................................3-35
Stalling on an Incline.......................................4-33
Starting Your Engine.......................................2-24
Starting Your V8 Engine..................................2-25Steering........................................................4-13
Steering in Emergencies..................................4-14
Steering Tips..................................................4-13
Steering Wheel Controls, Audio.......................3-127
Steering Wheel, Tilt Wheel................................. 3-7
Step-Bumper Pad..........................................4-102
Stereo RCA Jacks.........................................3-115
Storage Areas................................................2-67
Center Console Storage Area........................2-68
Cupholder(s)...............................................2-67
Front Storage Area......................................2-68
Glove Box..................................................2-67
Storing a Flat or Spare Tire, Jack and Tools.....5-106
Stuck in Sand, Mud, Ice or Snow......................4-50
Sun Visors.....................................................2-19
Supplemental Brake Assist System...................... 4-9
Swing-Out Windows........................................2-19
T
Tachometer....................................................3-35
Tailgate.........................................................2-15
Tailgate Removal............................................2-15
Taillamps.......................................................5-70
Taillamps (Chassis Cab Models)........................5-72
Temperature and Compass Display....................2-55
Temperature Display........................................2-58
Testing the Alarm............................................2-21
Theft-Deterrent, Radio....................................3-127
15