2003 CHEVROLET TAHOE oil pressure

Part B: Owner Checks and Services
Listed in this part are owner checks and services
which should be performed at the intervals speci®ed to
help ensure the safety, dependability and emission
control performance of your vehicle.
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
in Part D.
At Each Fuel Fill
It is important for you or a service station attendant 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 5-18for further
details.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOLž
coolant mixture if necessary. SeeEngine Coolant
on page 5-29for 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.
See
Windshield Washer Fluid on page 5-44for further
details.
At Least Once a Month
Tire In¯ation Check
Visually inspect your tires and make sure tires are
in¯ated to the correct pressures. Don't forget to check
your spare tire. See
Tires on page 5-67for further
details.
Cassette Tape Player Service
Clean cassette tape player. Cleaning should be done
every 50 hours of tape play. SeeAudio System(s)
on page 3-72for further details.
6-11

Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
®ttings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
Transfer Case and Front Axle
(Four-Wheel Drive) Inspection
Every 12 months or at engine oil change intervals,
check front axle and transfer case and add lubricant
when necessary. A ¯uid loss could indicate a problem;
check and have it repaired, if needed. On manual
shift transfer case, oil the control lever pivot point. Check
vent hose at transfer case for kinks and proper
installation. More frequent lubrication may be required
on off-road use.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
cha®ng, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often if your driving
habits or conditions result in frequent braking.
6-17

Braking........................................................... 4-6
Break-In, New Vehicle.....................................2-21
Bucket Seats, Rear.........................................1-21
BUCKLE PASSENGER....................................3-65
BUCKLE SEATBELT.......................................3-65
Bulb Replacement...........................................5-59
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-61
Halogen Bulbs............................................5-59
Headlamps.................................................5-60
Replacement Bulbs......................................5-66
Roof Marker Lamps.....................................5-62
Side Identi®cation Marker Lamps...................5-62
Taillamps....................................................5-64
Buying New Tires...........................................5-71
C
California Fuel.................................................. 5-6
Canada ± Customer Assistance.......................... 7-5
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-8
Capacities and Speci®cations..........................5-118
Car Washes for QUADRASTEERŸ Equipped
Vehicles.....................................................4-19
Carbon Monoxide...................4-51, 4-65, 2-14, 2-43Care of........................................................5-102
Safety Belts..............................................5-102
Your Cassette Tape Player..........................3-127
Your CD and DVD Player...........................3-129
Your CDs and DVDs..................................3-128
Cargo Cover..................................................2-64
Cargo Tie Downs............................................2-64
Cassette Tape Messages.................................3-97
Cassette Tape Player Service...........................6-11
CD Adapter Kits.............................................3-98
Center Console Storage Area...........................2-62
Center Instrument Panel Fuse Block................5-112
Center Passenger Position, Safety Belts.............1-39
Chains, Tires..................................................5-76
CHANGE ENGINE OIL....................................3-65
Check Engine Light.........................................3-47
CHECK OIL LEVEL.........................................3-66
CHECK TIRE PRESSURE...............................3-66
CHECK WASHER FLUID.................................3-66
Checking Brake Fluid......................................5-46
Checking Coolant............................................5-31
Checking Engine Oil........................................5-18
Checking Things Under the Hood......................5-12
Checking Your Restraint Systems......................1-88
Check...........................................................3-47
Engine Light...............................................3-47
3

Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-6
E-85 (85% Ethanol)....................................... 5-7
Filling a Portable Fuel Container....................5-11
Filling Your Tank........................................... 5-9
Fuels in Foreign Countries.............................. 5-8
Gage.........................................................3-52
Gasoline Octane........................................... 5-5
Gasoline Speci®cations.................................. 5-5
Low Warning Light.......................................3-53
System Inspection.......................................6-16
Fuses..........................................................5-109
Fuses and Circuit Breakers.........................5-109
Windshield Wiper.......................................5-108
G
Gage............................................................3-45
Engine Coolant Temperature.........................3-45
Fuel..........................................................3-52
Oil Pressure...............................................3-50
Speedometer..............................................3-38
Tachometer.................................................3-38
Transmission Temperature.............................3-46
Voltmeter Gage...........................................3-42Garage Door Opener.......................................2-57
Gasoline......................................................... 5-5
Octane........................................................ 5-5
Speci®cations............................................... 5-5
Gate Operator and Canadian Programming........2-60
Getting Familiar with Off-Road Driving................4-28
Glove Box.....................................................2-61
GM Mobility Program for Persons with
Disabilities.................................................... 7-6
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-8
Headlamp High/Low-Beam Changer.................... 3-8
Headlamps....................................................5-60
Bulb Replacement.......................................5-59
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-61
Halogen Bulbs............................................5-59
Roof Marker Lamps.....................................5-62
Side Identi®cation Marker Lamps...................5-62
Headphones.................................................3-119
Heated Seats................................................... 1-5
Heating.........................................................3-29
Highway Hypnosis...........................................4-48
8

N
New Vehicle Break-In......................................2-21
Normal Maintenance Replacement Parts...........5-121
O
Odometer......................................................3-38
Off-Road Recovery..........................................4-20
OIL LIFE RESET............................................3-67
OIL PRESSURE LOW.....................................3-67
Oil ................................................................5-18
Engine.......................................................5-18
Pressure Gage............................................3-50
Older Children, Restraints................................1-47
Online Owner Center........................................ 7-4
OnStar
žPersonal Calling.................................2-56
OnStaržServices............................................2-55
OnStaržSteering Wheel Controls......................2-56
OnStaržSystem.............................................2-55
OnStaržVirtual Advisor....................................2-56
Operating Your All-Wheel-Drive Vehicle Off
Paved Roads..............................................4-23
Other Warning Devices...................................... 3-6
Outlet Adjustment...................................3-24, 3-30
Outside Power Camper-Type Mirror...................2-53Outside.........................................................2-53
Automatic Dimming Mirror.............................2-53
Camper-Type Mirrors....................................2-52
Convex Mirror.............................................2-54
Curb View Assist Mirrors..............................2-54
Heated Mirrors............................................2-54
Manual Mirrors............................................2-51
Power Foldaway Mirrors...............................2-53
Power Mirrors.............................................2-52
Overheated Engine Protection Operating Mode
(V8 Engines Only).......................................5-33
Overseas ± Customer Assistance........................ 7-5
Owners, Canadian............................................... ii
Owner's Information........................................7-12
P
Panel Doors...................................................2-15
Park (P)........................................................2-42
Shifting Out of............................................2-42
Parking Brake and Automatic Transmission Park
(P) Mechanism Check..................................6-15
Parking on Hills..............................................4-76
Parking.........................................................2-38
Brake........................................................2-38
Over Things That Burn.................................2-42
12