check engine CHEVROLET SILVERADO 2004 1.G Workshop Manual

At the First 100, 1,000 and 6,000
Miles (160, 1 600 and 10 000km)
Check dual wheel nut torque. For proper torque, see
Capacities and Specications on page 5-132.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. SeeEngine Oil on page 5-20for
further details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-35for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank and add the proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your tires and make sure tires are
inated to the correct pressures. Do not forget to check
your spare tire. SeeTires on page 5-74for further
details. Check to make sure the spare tire is stored
securely. Push, pull and then try to rotate or turn
the spare tire. If it moves, tighten it. SeeChanging a
Flat Tire on page 5-93.
6-10

At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the
regular brake. SeeParking Brake on page 2-48
if necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL (N).
If the starter works in any other position, contact
your GM Goodwrench dealer for service.
Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a
level surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-48if necessary.
Be ready to apply the regular brake immediately
if the vehicle begins to move.
3. With the engine off, turn the key to the RUN
position, but do not start the engine. Without
applying the regular brake, try to move the shift
lever out of PARK (P) with normal effort. If the shift
lever moves out of PARK (P), contact your
GM Goodwrench dealer for service.
6-11

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.
The key should turn to LOCK only when the
shift lever is in PARK (P).
The key should come out only in LOCK.
Contact your GM Goodwrench dealer if service
is required.
Parking Brake and Automatic
Transmission Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
To check the parking brake’s holding ability: With
the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle is
held by the parking brake only.
To check the PARK (P) mechanism’s holding
ability: With the engine running, shift to PARK (P).
Then release the parking brake followed by the
regular brake.
Contact your GM Goodwrench dealer if service
is required.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-12

C
California Fuel.................................................. 5-6
Canada – Customer Assistance.......................... 7-5
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Specications..........................5-132
Car Washes for QUADRASTEER™
Equipped Vehicles.......................................4-17
Carbon Monoxide...................2-15, 2-53, 4-46, 4-70
Care of
Safety Belts..............................................5-117
Your Cassette Tape Player..........................3-129
Your CD and DVD Player...........................3-130
Your CDs and DVDs..................................3-130
Cargo Lamp...................................................3-17
CARGO LAMP ON.........................................3-65
Cassette Tape Messages.................................3-97
CD Adapter Kits.............................................3-97
CD Messages...............................3-86, 3-99, 3-113
Center Console Storage Area...........................2-68
Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp...............................................5-68
Center Instrument Panel Fuse Block................5-126
Center Passenger Position, Safety Belts.............1-24
Chains, Tires..................................................5-91
CHANGE ENGINE OIL....................................3-66
Check Engine Light.........................................3-48
CHECK OIL LEVEL.........................................3-65CHECK WASHER FLUID.................................3-65
Checking Brake Fluid......................................5-50
Checking Coolant............................................5-36
Checking Engine Oil........................................5-20
Checking Things Under the Hood......................5-12
Chemical Paint Spotting.................................5-120
Child Restraints
Child Restraint Systems...............................1-38
Infants and Young Children...........................1-34
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-47
Older Children.............................................1-32
Securing a Child Restraint Designed for the
LATCH System................................1-48, 1-49
Securing a Child Restraint in a Center Rear
Seat Position...........................................1-56
Securing a Child Restraint in a Rear Outside
Seat Position...........................................1-53
Securing a Child Restraint in the Center Front
Seat Position...........................................1-58
Securing a Child Restraint in the Right Front
Seat Position (Crew Cab)..........................1-58
Securing a Child Restraint in the Right
Front Seat Position (Regular and
Extended Cab).........................................1-61
Top Strap...................................................1-42
Top Strap Anchor Location............................1-43
Where to Put the Restraint...........................1-41
3

E
Easy Exit Seat...............................................2-72
Electrical System
Add-On Equipment.....................................5-123
Fuses and Circuit Breakers.........................5-123
Power Windows and Other Power Options.......5-123
Windshield Wiper Fuses.............................5-123
Electronic Transfer Case..................................2-44
Emissions Inspection and Maintenance
Programs...................................................3-50
Engine
Air Cleaner/Filter.........................................5-25
Battery.......................................................5-52
Check and Service Engine Soon Light............3-48
Coolant......................................................5-35
Coolant Heater............................................2-26
Coolant Temperature Gage...........................3-46
Drive Belt Routing.......................................6-18
Engine Compartment Overview......................5-14
Exhaust.....................................................2-53
Fan Noise..................................................5-46
Oil .............................................................5-20
Overheating................................................5-38
Starting......................................................2-24
ENGINE COOLANT HOT.................................3-66
Engine Hour Meter Display...............................3-35
Engine Oil Additives........................................5-23
ENGINE OVERHEATED..................................3-66Entry Lighting.................................................3-18
Environmental Concerns..................................4-25
Event Data Recorders (EDR)............................. 7-9
Exit Lighting...................................................3-18
Express Down Windows..................................2-18
Extended Cab........................................1-56, 2-14
Extended Cab and Crew Cab...........................1-53
Extender, Safety Belt.......................................1-31
Exterior Lamps...............................................3-13
F
Fifth Wheel and Gooseneck Trailering................4-89
Filter
Engine Air Cleaner......................................5-25
Finding a Program Type (PTY) Station
(RDS and XM™).......................3-79, 3-90, 3-104
Finding a Station..................3-74, 3-77, 3-88, 3-102
Finish Care..................................................5-118
Finish Damage.............................................5-120
Five-Speed (VORTEC™ 4300 V6 and
4800 V8 Engines)........................................2-32
Five-Speed (VORTEC™ 6000 V8 Engine)...........2-31
Fixed Mast Antenna.......................................3-130
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-92
Flat Tire, Changing.........................................5-93
6

H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-8
Headlamp High/Low-Beam Changer.................... 3-8
Headlamps....................................................5-63
Bulb Replacement.......................................5-63
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-65
Halogen Bulbs............................................5-63
Pickup Box Identication and Fender
Marker Lamps.........................................5-69
Roof Marker Lamps.....................................5-66
Headphones.................................................3-115
Heated Seats................................................... 1-5
Heating.........................................................3-30
Heavy-DutyTrailer Wiring Harness Package........4-96
Highway Hypnosis...........................................4-43
Hill and Mountain Roads..................................4-44
Hitches..........................................................4-88
Hood
Checking Things Under................................5-12
Release.....................................................5-12
Horn............................................................... 3-6
How to Add Coolant to the Coolant Surge Tank
for Gasoline Engines....................................5-43
How to Add Fluid............................5-30, 5-33, 5-34How to Check and Add Fluid............................5-35
How to Check Lubricant...................................5-59
How to Check Power Steering Fluid..................5-47
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-16
Hydraulic Clutch.............................................5-34
Hydroplaning..................................................4-39
I
If No Steam Is Coming From Your Engine..........5-40
If Steam Is Coming From Your Engine...............5-39
If the Light is Flashing.....................................3-49
If the Light Is On Steady.................................3-49
If You Are Caught in a Blizzard.........................4-48
If You Are Stuck in Sand, Mud, Ice or Snow.......4-50
If You Do Decide To Pull A Trailer.....................4-70
Ignition Positions.............................................2-23
Infants and Young Children, Restraints...............1-34
Ination - Tire Pressure...................................5-82
Instrument Panel
Cluster.......................................................3-34
Overview..................................................... 3-4
Instrument Panel Brightness Control..................3-18
Instrument Panel Fuse Block..........................5-124
Interior Lamps................................................3-18
8

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

Radios (cont.)
Theft-Deterrent..........................................3-127
Understanding Reception............................3-128
RANGE SHIFT INHIBITED (Allison
Transmission
®Only).....................................3-67
RDS Messages.............................3-80, 3-91, 3-105
Rear Axle......................................................5-59
Locking......................................................4-12
Rear Door Security Locks................................2-13
Rear Doors....................................................2-14
Rear Safety Belt Comfort Guides......................1-29
Rear Seat Audio (RSA)..................................3-125
Rear Seat Entertainment System.....................3-114
Rear Seat Operation......................................... 1-9
Rear Seat Outside Passenger Positions
(Extended Cab and Crew Cab)......................1-26
Rear Seat Passengers, Safety Belts..................1-26
Rear Seat Top Strap Anchors (Crew
Cab Models)...............................................1-46
Rear Seat Top Strap Anchors (Extended
Cab Models)...............................................1-45
Rear Window Defogger............................3-24, 3-31
Rearview Mirror, Automatic Dimming with
Compass and Temperature Display................2-58
Rearview Mirror, Automatic Dimming with OnStar
®,
Compass and Temperature Display..................2-55
Rearview Mirrors.............................................2-55
Reclining Seatbacks.......................................... 1-6
Recommended Fluids and Lubricants.................6-13
Recreational Vehicle Towing.............................4-53REDUCED ENGINE POWER...........................3-67
Regular Cab and Extended Cab Models.............1-73
Remote Control.............................................3-119
Remote Keyless Entry System............................ 2-4
Remote Keyless Entry System, Operation............ 2-5
Removing the Flat Tire and Installing the
Spare Tire..................................................5-98
Removing the Spare Tire and Tools...................5-94
Replacement Bulbs.........................................5-72
Replacing Brake System Parts..........................5-52
Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check
Checking Your Restraint Systems...................1-84
Replacing Restraint System Parts After
a Crash..................................................1-85
Restraint Systems
Checking....................................................1-84
Replacing Parts...........................................1-85
Resynchronization............................................. 2-7
Retained Accessory Power (RAP)......................2-24
Right Front Passenger Position, Safety Belts......1-24
Right Front Passenger Position Top Strap Anchor
(Regular and Extended Models).....................1-43
RIGHT REAR DOOR AJAR (Crew Cab).............3-68
Roadside
Assistance Program....................................... 7-6
13

Wheels
Alignment and Tire Balance..........................5-89
Replacement...............................................5-89
When to Add Engine Oil..................................5-21
When to Change Engine Oil (GM Oil
Life System)...............................................5-24
When to Check and What to Use.....................5-35
When to Check Lubricant.................................5-59
When to Check Power Steering Fluid................5-47
When to Inspect.............................................5-25
When You Are Ready to Leave After Parking
on a Hill.....................................................4-94
Where to Put the Restraint...............................1-41
Why Safety Belts Work....................................1-12
Windows.......................................................2-17
Manual......................................................2-17
Power........................................................2-18
Sliding Rear................................................2-19
Swing-Out Windows.....................................2-19Windshield Washer.........................................3-10
Fluid..........................................................5-47
Windshield Wiper
Blade Replacement......................................5-73
Fuses......................................................5-123
Windshield Wipers............................................ 3-9
Winter Driving................................................4-46
X
XM™ Satellite Radio Antenna System..............3-130
XM™ Satellite
Radio Service..................3-76, 3-87, 3-101, 3-128
Y
Your Vehicle and the Environment....................... 6-2
18