2003 GMC SIERRA transmission oil

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. SeeEngine Oil on
page 5-13for information on resetting the system.
An Emission Control Service.
Lubricate chassis components with each engine oil
and filter change.
Lubricate the front suspension, ball joints, steering
linkage, transmission shift linkage, transfer case 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.
See the mileage intervals following for additional
services that may be performed with an engine oil
change and chassis lubrication. After the services are
performed, record the date, odometer reading and
who performed the service on the maintenance record
pages in Part E of this schedule.
7,500 Miles (12 500 km)
❑Check rear/front axlefluid level and addfluid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-58for proper rotation pattern and additional
information.(See footnote +.)
15,000 Miles (25 000 km)
❑Inspect engine air cleanerfilter change indicator.
If necessary, replace thefilter. If vehicle is driven
in dusty/dirty conditions, inspectfilter change
indicator at every engine oil change. SeeEngine Air
Cleaner/Filter on page 5-18for more information.
An Emission Control Service. (See footnote†.)
❑Check rear/front axlefluid level and addfluid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-58for proper rotation pattern and additional
information.(See footnote +.)
22,500 Miles (37 500 km)
❑Check rear/front axlefluid level and addfluid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-58for proper rotation pattern and additional
information.(See footnote +.)
30,000 Miles (50 000 km)
❑Inspect engine air cleanerfilter change indicator.
If necessary, replace thefilter. If vehicle is driven
in dusty/dirty conditions, inspectfilter change
indicator at every engine oil change. SeeEngine Air
Cleaner/Filter on page 5-18for more information.
An Emission Control Service. (See footnote†.)
6-6
2003 - Sierra Denali

❑Check rear/front axlefluid level and addfluid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-58for proper rotation pattern and additional
information.(See footnote +.)
❑Replace fuelfilter.An Emission Control Service.
(See footnote†.)
37,500 Miles (62 500 km)
❑Check rear/front axlefluid level and addfluid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-58for proper rotation pattern and additional
information.(See footnote +.)
45,000 Miles (75 000 km)
❑Inspect engine air cleanerfilter change indicator.
If necessary, replace thefilter. If vehicle is driven
in dusty/dirty conditions, inspectfilter change
indicator at every engine oil change. SeeEngine Air
Cleaner/Filter on page 5-18for more information.
An Emission Control Service. (See footnote†.)
❑Check rear/front axlefluid level and addfluid as
needed. Check constant velocity joints and axle seals
for leaking.❑Rotate tires. SeeTire Inspection and Rotation on
page 5-58for proper rotation pattern and additional
information.(See footnote +.)
50,000 Miles (83 000 km)
❑Change automatic transmissionfluid andfilter 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.
If you do not use your vehicle under any of these
conditions, change the fluid and filter at 100,000 miles
(166 000 km).
52,500 Miles (87 500 km)
❑Check rear/front axle uid level and add uid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-58for proper rotation pattern and additional
information.(See footnote +.)
6-7
2003 - Sierra Denali

Transfer Case and Front Axle
(All-Wheel Drive) Inspection
Every 12 months, or at engine oil change intervals,
check front axle and transfer case and add lubricant
when necessary. Auid loss could indicate a problem.
Check and have it repaired, if needed. Check vent
hose at transfer case for kinks and proper installation.
Brake System Inspection
Inspect the complete system. 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. You may need to
have your brakes inspected more often if your driving
habits or conditions result in frequent braking.
Part D: Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name, part
number or specication may be obtained from your
dealer.
Usage Fluid/Lubricant
Engine OilEngine oil with the American
Petroleum Institute Certied for
Gasoline Engines starburst symbol
of the proper viscosity. To determine
the preferred viscosity for your
vehicle’s engine, seeEngine Oil on
page 5-13.
Engine Coolant50/50 mixture of clean, drinkable
water and use only
DEX-COOL
®Coolant. SeeEngine
Coolant on page 5-23.
Hydraulic Brake
SystemDelco Supreme 11 Brake Fluid or
equivalent DOT-3 brakeuid.
Windshield
Washer SolventGM Optikleen
®Washer Solvent or
equivalent.
Power Steering
SystemGM Power Steering Fluid (GM Part
No. U.S. 1052884, in Canada
993294, or equivalent).
Automatic
TransmissionDEXRON
®-III Automatic
Transmission Fluid.
6-15
2003 - Sierra Denali

F
Filter
Engine Air Cleaner......................................5-18
Finding a PTY Station (RDS and XM™) .............3-61
Finding a Station............................................3-59
Finish Care....................................................5-85
Finish Damage...............................................5-87
Fixed Mast Antenna........................................3-78
Flash-To-Pass Feature....................................... 3-7
Flat Tire........................................................5-64
Flat Tire, Changing.........................................5-65
Fluid
Automatic Transmission................................5-20
Power Steering...........................................5-34
Windshield Washer......................................5-35
FM Stereo.....................................................3-76
Fog Lamps ....................................................3-14
Folding the Rear Seat....................................... 1-6
Following Distance..........................................4-58
Footnotes........................................................ 6-5
Front Axle......................................................5-47
Front Reading Lamps
......................................3-15
Fuel
............................................................... 5-4
Additives
...................................................... 5-6
California Fuel
.............................................. 5-5
Filling a Portable Fuel Container
..................... 5-9
Filling Your Tank
........................................... 5-7
Fuels in Foreign Countries
.............................. 5-6
Gage
.........................................................3-41Fuel (cont.)
Gasoline Octane........................................... 5-4
Gasoline Specifications.................................. 5-5
Low Warning Light.......................................3-41
System Inspection.......................................6-14
Fuel Information Button....................................3-44
FUEL LEVEL LOW.........................................3-54
Fuses
Fuses and Circuit Breakers...........................5-91
Windshield Wiper.........................................5-91
G
Gage
Engine Coolant Temperature.........................3-36
Fuel..........................................................3-41
Oil Pressure...............................................3-40
Speedometer..............................................3-26
Tachometer.................................................3-26
Transmission Temperature.............................3-36
Voltmeter Gage...........................................3-33
Garage Door Opener.......................................2-35
Gasoline
Octane........................................................ 5-4
Specifications............................................... 5-5
Gate Operator and Canadian Programming........2-37
Getting Familiar with Off-Road Driving................4-20
Glove Box.....................................................2-39
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
6
2003 - Sierra Denali

O
Odometer......................................................3-26
Off-Road Recovery..........................................4-15
Oil
Engine.......................................................5-13
Pressure Gage............................................3-40
OIL LIFE RESET............................................3-52
OIL PRESSURE LOW .....................................3-52
Older Children, Restraints................................1-29
Online Owner Center........................................ 7-3
OnStar
®Personal Calling.................................2-34
OnStar®Services............................................2-33
OnStar®Steering Wheel Controls......................2-34
OnStar®System.............................................2-33
OnStar®Virtual Advisor....................................2-34
Operating Your All-Wheel-Drive Vehicle Off
Paved Roads..............................................4-18
Other Warning Devices...................................... 3-4
Outlet Adjustment............................................3-23
Outside
Automatic Dimming Mirror.............................2-32
Convex Mirror
.............................................2-32
Curb View Assist Mirrors
..............................2-32
Heated Mirrors
............................................2-32
Power Foldaway Mirrors
...............................2-31
Power Mirrors
.............................................2-31
Overheated Engine Protection Operating Mode
.....5-26
Owners, Canadian
............................................... ii
Owner’s Information
........................................7-10
P
Park (P)
Shifting Out of............................................2-25
Parking
Brake........................................................2-22
Over Things That Burn.................................2-26
Parking Brake and Automatic Transmission
Park (P) Mechanism Check...........................6-13
Parking on Hills..............................................4-60
Park(P)
Shifting Into................................................2-23
Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-10
Part C - Periodic Maintenance Inspections..........6-14
Part D - Recommended Fluids and Lubricants....6-15
PartE-Maintenance Record...........................6-17
Passenger Air Bag Indicator.............................2-30
Passenger Air Bag Status Indicator...................3-31
PASSENGER DOOR AJAR..............................3-56
Passenger Sensing System..............................1-66
Passing.................................................4-15, 4-58
Passlock
®......................................................2-15
Payload.........................................................4-49
Personalization Button.....................................3-46
Pickup Conversion to Chassis Cab
....................4-52
Plan Ahead When Possible
................................ 7-7
Playing a Cassette Tape
..................................3-65
Playing a Compact Disc
...................................3-68
Playing the Radio
...........................................3-58
10
2003 - Sierra Denali