2004 CHEVROLET SILVERADO fuel pressure

Maintenance Footnotes
†The 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 10°F (-12°C) or higher,
or they could be damaged. Vehicles used under severe
commercial operating conditions require lubrication
on a regular basis every 3,000 miles (5 000 km).
(a)Visually inspect brake lines and hoses for proper
hook-up, binding, leaks, cracks, chang, 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, chang, 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

(g)Add uid as needed. A uid loss could indicate a
problem; repair as needed. Check vent hose at transfer
case for kinks and proper installation.
(h)Change automatic transmission uid and lter if the
vehicle GVWR is over 8600 lbs. or if the vehicle is
mainly driven under one or more of these conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or
delivery service.
(i)Drain, ush and rell cooling system. See Engine
Coolant on page 5-35for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and ller neck.
Pressure test the cooling system and pressure cap.
(j)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired and
the uid level checked. Add uid if needed.
(k)Inspect system. Check all fuel and vapor lines and
hoses for proper hook-up, routing and condition.
Check that the purge valve works properly (if equipped).
Replace as needed.(l)Change clutch uid (or every 24 months, whichever
occurs rst).
(m)Change automatic transmission uid and lter if
the vehicle is mainly driven under one or more of
these conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or
delivery service.
Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability and emission control performance of your
vehicle. Your GM Goodwrench dealer can assist you
with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-13.
6-9

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

Fluid
Automatic Transmission........................5-27, 5-30
Manual Transmission....................................5-33
Power Steering...........................................5-46
Windshield Washer......................................5-47
FM Stereo....................................................3-128
Fog Lamps....................................................3-16
Folding the Rear Seat....................................... 1-9
Following Distance..........................................4-91
Four-Wheel Drive....................................2-36, 5-60
Four-Wheel-Drive Light....................................3-51
Front Axle Locking Feature...............................2-36
Front Reading Lamps......................................3-18
Front Storage Area.........................................2-68
Fuel............................................................... 5-5
Additives...................................................... 5-7
California Fuel.............................................. 5-6
E-85 (85% Ethanol)....................................... 5-8
Filling a Portable Fuel Container....................5-11
Filling Your Tank........................................... 5-9
Fuels in Foreign Countries.............................. 5-9
Gage.........................................................3-52
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-6
Low Warning Light.......................................3-53Fuel Information Button....................................3-56
FUEL LEVEL LOW.........................................3-66
Fuses
Fuses and Circuit Breakers.........................5-123
Windshield Wiper.......................................5-123
G
Gage
Engine Coolant Temperature.........................3-46
Fuel..........................................................3-52
Oil Pressure...............................................3-50
Speedometer..............................................3-35
Tachometer.................................................3-35
Transmission Temperature.............................3-46
Voltmeter Gage...........................................3-42
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-6
Getting Familiar with Off-Road Driving................4-25
Glove Box.....................................................2-67
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
7

Theft-Deterrent Systems...................................2-20
Content Theft-Deterrent................................2-20
Passlock
®...................................................2-22
TIGHTEN FUEL CAP......................................3-70
Tilt Wheel........................................................ 3-7
Tire Sidewall Labeling......................................5-74
Tire Size.......................................................5-77
Tire Terminology and Denitions........................5-79
Tires.............................................................5-74
Buying New Tires........................................5-86
Chains.......................................................5-91
Changing a Flat Tire....................................5-93
Dual Tire Operation.....................................5-83
If a Tire Goes Flat.......................................5-92
Ination - Tire Pressure................................5-82
Inspection and Rotation................................5-83
Spare Tire................................................5-113
Uniform Tire Quality Grading.........................5-88
Wheel Alignment and Tire Balance.................5-89
Wheel Replacement.....................................5-89
When It Is Time for New Tires......................5-86
To Use the Engine Coolant Heater....................2-26
Tonneau Cover...............................................2-68
Top Strap......................................................1-42
Top Strap Anchor Location...............................1-43
Torque Lock (Automatic Transmission)...............2-51
Total Weight on Your Vehicle’s Tires..................4-88
Tow/Haul Mode (Automatic Transmission)...........2-30
Tow/Haul Mode Light.......................................3-52
Tow/Haul Mode, Overdrive Disable....................3-52Towing
Power Take-Off (PTO)................................4-100
Recreational Vehicle.....................................4-53
Towing a Trailer..........................................4-70
Your Vehicle...............................................4-52
Traction
Assist System (TAS)...................................... 4-9
Manual Selectable Ride................................4-11
Off Light.....................................................3-45
TRACTION ACTIVE........................................3-70
Trailer
Recommendations.......................................4-69
Trailer Brakes.................................................4-90
Trailer Wiring Harness.....................................4-95
TRANS HOT IDLE ENGINE (Allison
Transmission
®Only).....................................3-71
Transfer Case........................................5-58, 5-60
Transmission
Fluid, Automatic..................................5-27, 5-30
Fluid, Manual..............................................5-33
Temperature Gage.......................................3-46
Up-Shift Light..............................................3-43
TRANSMISSION HOT.....................................3-70
Transmission Operation, Automatic....................2-27
Transmission Operation, Manual........................2-31
Transmission, Transaxle, Transfer Case Unit
Repair Manual............................................7-11
Transportation Options...................................... 7-8
Traveling to Remote Areas...............................4-25
Trip Information Button....................................3-54
16