2003 CHEVROLET TAHOE engine oil

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

Part D: Recommended Fluids and
Lubricants
Fluids and lubricants identi®ed below by name, part
number or speci®cation may be obtained from your
dealer.
Usage Fluid/Lubricant
Engine OilEngine oil with the American
Petroleum Institute Certi®ed for
Gasoline Engines starburst symbol
of the proper viscosity. To determine
the preferred viscosity for your
vehicle's engine, see
Engine Oil on
page 5-18.
Engine Coolant50/50 mixture of clean, drinkable
water and use only
DEX-COOL
žCoolant. SeeEngine
Coolant on page 5-29.
Hydraulic Brake
SystemDelco Supreme 11 Brake Fluid or
equivalent DOT-3 brake ¯uid.
Windshield
Washer SolventGM Optikleen
žWasher Solvent or
equivalent.
Usage Fluid/Lubricant
Power Steering
SystemGM Power Steering Fluid (GM Part
No. U.S. 1052884, in Canada
993294, or equivalent).
Automatic
TransmissionDEXRON
ž-III Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474, or equivalent).
Chassis
LubricationChassis Lubricant (GM Part No.
U.S. 12377985, in Canada
88901242, or equivalent) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Front Axle
(Four-Wheel
Drive)SAE 80W-90 Axle Lubricant (GM
Part No. U.S. 1052271, in Canada
10950849 or equivalent).
Front Axle
(All-Wheel
Drive)SAE 75W-90 Synthetic Axle
Lubricant (GM Part No. U.S.
12378261, in Canada 10953455) or
equivalent meeting GM Speci®cation
9986115.
6-18

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

Driving in Mud, Sand, Snow or Ice....................4-38
Driving in Water..............................................4-39
Driving On Grades..........................................4-75
Driving on Off-Road Hills.................................4-30
Driving on Snow or Ice....................................4-52
Driving Through Deep Standing Water...............4-44
Driving Through Flowing Water.........................4-44
Driving Uphill..................................................4-31
Driving with a Trailer.......................................4-73
Driving..........................................................4-40
At Night.....................................................4-40
City...........................................................4-45
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-46
Hill and Mountain Roads..............................4-49
In Rain and on Wet Roads...........................4-42
Winter........................................................4-51
Dual Automatic Climate Control System.............3-25
Dual Climate Control System............................3-21
DVD Player..................................................3-114
DVD ............................................................3-129
Cleaning the Video Screen..........................3-129
Distortion..................................................3-126
Rear Seat Entertainment System..................3-114E
Easy Exit Seat...............................................2-67
Electrical System...........................................5-108
Add-On Equipment.....................................5-108
Fuses and Circuit Breakers.........................5-109
Power Windows and Other Power Options....5-108
Windshield Wiper Fuses.............................5-108
Electrochromic Mirror Operation................2-46, 2-49
Emissions Inspection and
Maintenance Programs.................................3-50
ENGINE COOLANT HOT.................................3-66
Engine Coolant Level Check.............................6-11
Engine Hour Meter Display...............................3-38
Engine Oil Additives........................................5-21
Engine Oil and Chassis Lubrication Scheduled
Maintenance................................................. 6-5
Engine Oil Level Check...................................6-11
ENGINE OVERHEATED..................................3-66
Engine..........................................................5-23
Air Cleaner/Filter.........................................5-23
Battery.......................................................5-48
Check and Service Engine Soon Light............3-47
Compartment Overview................................5-14
Coolant Heater............................................2-24
6

Engine (cont.)
Coolant Temperature Gage...........................3-45
Coolant......................................................5-29
Cooling System Inspection............................6-17
Exhaust.....................................................2-43
Fan Noise..................................................5-42
Oil .............................................................5-18
Overheating................................................5-33
Starting......................................................2-23
Entering or Exiting the Third Row Seats.............. 1-9
Entertainment System....................................3-129
Cleaning the Video Screen..........................3-129
DVD Distortion..........................................3-126
Entry Lighting.................................................3-17
Environmental Concerns..................................4-27
Erasing HomeLink
žButtons..............................2-60
Exit Lighting...................................................3-17
Express-Down Windows...................................2-17
Extender, Safety Belt.......................................1-46
Exterior Lamps...............................................3-14
F
Filter.............................................................5-23
Engine Air Cleaner......................................5-23
Finding a PTY Station
(RDS and XMŸ).......................3-80, 3-91, 3-104Finding a Station..................3-74, 3-78, 3-89, 3-102
Finish Care..................................................5-103
Finish Damage.............................................5-104
Fixed Mast Antenna.......................................3-129
Flash-To-Pass.................................................. 3-8
Flat Tire, Changing.........................................5-77
Flat Tire........................................................5-76
Fluid.............................................................5-26
Automatic Transmission................................5-26
Power Steering...........................................5-43
Windshield Washer......................................5-44
FM Stereo....................................................3-127
Fog Lamps....................................................3-16
Folding the Seatback.......................................1-16
Folding the Seatbacks.....................1-10, 1-12, 1-21
Following Distance..........................................4-74
Footnotes........................................................ 6-5
Four-Wheel Drive....................................2-29, 5-57
Four-Wheel-Drive Light....................................3-51
Front Axle Locking Feature...............................2-30
Front Axle......................................................5-58
Front Reading Lamps......................................3-18
Front Storage Area.........................................2-61
Frontal Air Bags.............................................1-79
Fuel Information Button....................................3-57
FUEL LEVEL LOW.........................................3-67
7

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