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Fuse Usage
41 Windshield Wipers
42 Right Headlamp—Low Beam
43 Left Headlamp—Low Beam
44 Left Headlamp—High Beam
45 Right Headlamp—High Beam
46Truck Body Control
Module-Accessory
47 Front Windshield Wiper
48 Anti-Lock Brakes
49 Ignition A
50 Trailer
51 Climate Control Blower
52 Ignition B
63 Spare
64 SpareFuse Usage
Relay Usage
53 Windshield Wiper
54 Air Conditioning
55 Spare
56 Headlamp—High Beam
57 Fuel Pump
58 Headlamp—Low Beam
59 Horn
61 Starter
62 Spare
Circuit Breaker Usage
60 Power Seat
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2003 - Savana OM

At Least Twice a Year
Restraint System Check
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.)
Wiper Blade Check
Inspect wiper blades for wear or cracking. Replace
blade inserts that appear worn or damaged or that
streak or miss areas of the windshield. Also see
Cleaning the Outside of Your Vehicle on page 5-85.
Spare Tire Check
At least twice a year, after the monthly ination check of
the spare tire determines that the spare is inated to the
correct tire ination pressure, make sure that the spare
tire is stored securely. Push, pull, and then try to rotate or
turn the tire. If it moves, use the ratchet/wheel wrench to
tighten the cable. SeeChanging a Flat Tire on page 5-66.
Weatherstrip Lubrication
Silicone grease on weatherstrips will make them last
longer, seal better, and not stick or squeak. Apply
silicone grease with a clean cloth. During very cold,
damp weather more frequent application may be
required. SeePart D: Recommended Fluids and
Lubricants on page 6-18.
Automatic Transmission Check
Check the transmissionuid level; add if needed.
SeeAutomatic Transmission Fluid on page 5-19.
Auid loss may indicate a problem. Check the
system and repair if needed.
At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
specied in Part D.
Body Lubrication Service
Lubrcate all hood hinges, hood prop rod pivot, fuelller
door, rear compartment hinges, latches, locks, hood
latch assembly, secondary latch, pivots, spring anchor,
release pawl and any moving seat hardware. Part D
tells you what to use. More frequent lubrication may be
required when exposed to a corrosive environment.
6-13
2003 - Savana OM

Starter Switch Check
{CAUTION:
When you are doing this check, the vehicle
could move suddenly. If it does, you or others
could be injured. Follow the steps below.
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 2-26if
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, your
vehicle needs service.
Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this check, the vehicle
could move suddenly. If it does, you or others
could be injured. Follow the steps below.
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 2-26if 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 don’t 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), your vehicle needs service.
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2003 - Savana OM

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.
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.
Underbody Flushing Service
At least every spring, use plain water toush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other
debris can collect.
6-15
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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 5-22.
Hydraulic
Brake SystemDelco Supreme 11 Brake Fluid or
equivalent DOT-3 brakeuid.
Windshield
Washer SolventGM Optikleen
®Washer Solvent or
equivalent.
Usage Fluid/Lubricant
Parking Brake
Cable GuidesChassis Lubricant
(GM Part No. U.S. 12377985,
in Canada 88901242, or equivalent)
or lubricant meeting requirements
of NLGI #2, Category LB or GC-LB.
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 1052884,
in Canada 993294, or equivalent).
Automatic
TransmissionDEXRON
®-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 Wheel
BearingsWheel bearing lubricant meeting
requirements of NLGI #2,
Category GC or GC-LB
(GM Part No. U.S. 1051344,
in Canada 993037, or equivalent).
6-18
2003 - Savana OM

Roadside Assistance Program
GMC’s Roadside Assistance Provides stranded owners
with over-the-phone roadside repairs, location of the
nearest GMC dealer or the following special services:
Flat Tire Change:Installation of spare tire will be
covered at no charge (customer is responsible for repair
or replacement of tire).
Fuel Delivery:Delivery of enough fuel for the customer
to get to the nearest service station (up to $5.00)
will be covered.
Jump Start:No-start situations which require a battery
jump start will be covered at no charge.
Lock Out:Replacement keys or locksmith service will be
covered at no charge if you are unable to gain entry
into your vehicle. Delivery of the replacement key will be
covered within 10 miles (16 km).
Emergency Towing Service:Towing to the nearest GMC
dealer for warranty related disablements will be covered.
Trip Routing:Custom-made, computerized highlighted
maps using the most direct or scenic route are provided
free of charge. Maps include points of interest and a
list of GMC dealers along the route. Also included is
a list of hotels along the route that are discounted
through affiliation with“Quest International.”Trip Routing
is available through Roadside Assistance by calling
1-800-GMC-8782 (462-8782). Please be prepared to
provide your Vehicle Identication Number (VIN).
Allowve working days for fulllment.Trip Interruption Assistance:GMC will reimburse any
reasonable trip interruption expenses (up to $500.00)
when directly associated with warranty disablement.
Trip interruption service covers expenses such as meals
and overnight lodging if vehicle disablement occurs at
least 150 miles (240 km) from your home or rental
property. You will be required to obtain prior approval
from GMC Roadside Assistance and pay for expenses
at the time of disablement. Original receipts should
be submitted to GMC Roadside Assistance for
reimbursement. A service representative will provide
assistance when you call.
The Roadside Assistance services listed are available to
retail lease customers operating 2003 GMC light duty
trucks for a period of 3 years/36,000 miles (60,000 km).
All services must be pre-arranged by GMC Roadside
Assistance.
Over-the-phone assistance, such as providing the name
of the closest dealer or minor technical advice, etc.,
is available to all owner/operators of GMC trucks,
regardless of vehicle or mileage.
Just dial GMC Roadside Assistance at 1-800-GMC-8782
(1-800-462-8782, Roadside Assistance prompt) to
reach a qualied representative who can assist you.
Text telephone (TTY) users, call 1-888-889-2438.
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2003 - Savana OM

A
Accessory Power Outlets.................................3-16
Adding Equipment to Your Air Bag-Equipped
Vehicle.......................................................1-75
Adding Washer Fluid.......................................5-36
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-91
Add-On Equipment..........................................4-31
Adjusting the Speakers
(Balance/Fade)....................3-44, 3-47, 3-51, 3-62
Air Bag
Off Light.....................................................3-28
Readiness Light..........................................3-27
Air Bag System..............................................1-63
Adding Equipment to Your Air Bag-Equipped
Vehicle...................................................1-75
Air Bag Off Switch.......................................1-71
How Does an Air Bag Restrain?....................1-69
Servicing Your Air Bag-Equipped Vehicle.........1-74
What Makes an Air Bag Inflate?....................1-69
What Will You See After an
Air Bag Inflates?......................................1-70
When Should an Air Bag Inflate?...................1-67
Where Are the Air Bags?..............................1-66
Air Bag Systems.............................................1-69Air Cleaner/Filter, Engine.................................5-17
All Overseas Locations...................................... 7-5
All-Wheel Drive...............................................5-46
All-Wheel Drive (AWD) System.........................2-26
Aluminum Wheels...........................................5-87
AM ...............................................................3-74
AM-FM Radio.................................................3-42
Antenna, Fixed Mast.......................................3-76
Anti-lock Brake System..................................... 4-7
Anti-Lock Brake, System Warning Light..............3-32
Appearance Care............................................5-82
Care of Safety Belts....................................5-85
Chemical Paint Spotting...............................5-88
Cleaning the Inside of Your Vehicle................5-82
Cleaning the Outside of Your Vehicle..............5-85
Finish Damage............................................5-88
GM Vehicle Care/Appearance Materials..........5-89
Sheet Metal Damage...................................5-87
Underbody Maintenance...............................5-88
Weatherstrips..............................................5-85
Ashtrays........................................................3-16
Audio System(s).............................................3-41
AM-FM Radio.............................................3-42
Care of Your Cassette Tape Player................3-74
Care of Your CD Player...............................3-76
Care of Your CDs ........................................3-76
Chime Level Adjustment...............................3-76
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2003 - Savana OM

Audio System(s) (cont.)
Fixed Mast Antenna.....................................3-76
Radio with Cassette and CD.........................3-49
Radio with CD............................................3-45
Radio with Six-Disc CD................................3-60
Rear Seat Audio (RSA)................................3-71
Setting the Time for Radios with Radio
Data Systems (RDS)................................3-41
Setting the Time for Radios without Radio
Data Systems (RDS)................................3-41
Theft-Deterrent Feature................................3-73
Understanding Radio Reception.....................3-74
Automatic Transmission
Fluid..........................................................5-19
Operation...................................................2-24
Automatic Transmission Check..........................6-13
Automatic Transmission Shift Lock Control
System Check.............................................6-14
B
Backing Up....................................................4-43
Battery..........................................................5-40
Battery Replacement......................................... 2-6
Battery Run-Down Protection............................3-15
Before Leaving on a Long Trip.........................4-21
Body Lubrication Service..................................6-13Brake
Parking......................................................2-26
System Inspection.......................................6-17
System Warning Light..................................3-31
Brake Adjustment............................................5-39
Brake Fluid....................................................5-37
Brake Pedal Travel.........................................5-39
Brake Wear...................................................5-39
Brakes..........................................................5-37
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-9
Break-In, New Vehicle.....................................2-20
Bulb Replacement...........................................5-50
Front Turn Signal, Sidemarker and
Parking Lamps.........................................5-52
Halogen Bulbs............................................5-50
Headlamps.................................................5-50
Replacement Bulbs......................................5-54
Taillamps....................................................5-52
Buying New Tires...........................................5-61C
California Fuel.................................................. 5-5
Canada........................................................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
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2003 - Savana OM

Capacities......................................................5-98
Capacities and Specifications............................5-97
Carbon Monoxide...........................4-24, 4-31, 2-30
Care of
Safety Belts................................................5-85
Your Cassette Tape Player............................3-74
Your CD Player...........................................3-76
Your CDs ...................................................3-76
Cargo Door Relocking....................................... 2-9
Cargo Vans and Cab and Chassis Models
with an Air Bag Off Switch............................1-48
Cargo Vans and Cab and Chassis Models
without an Air Bag Off Switch........................1-47
Cargo Vans with a Passenger Air Bag and
an Air Bag Off Switch, Passenger Vans and
Cab and Chassis Models..............................1-36
Cargo Vans with a Passenger Air Bag and
without an Air Bag Off Switch........................1-39
Cassette Tape Messages.................................3-57
Cassette Tape Player Service...........................6-12
CD Adapter Kits.............................................3-57
Center High Mounted Stoplamp
(CHMSL) ............................................3-14, 5-54
Center Passenger Position,
Safety Belts........................................1-23, 1-24
Chains, Tires..................................................5-65
Charging System Light....................................3-29Check
Engine Light...............................................3-33
Gages Warning Light...................................3-39
Check Engine Light.........................................3-33
Checking Brake Fluid......................................5-38
Checking Coolant............................................5-24
Checking Engine Oil........................................5-13
Checking Things Under the Hood....................... 5-9
Checking Your Restraint Systems......................1-75
Chemical Paint Spotting...................................5-88
Child Restraints
Child Restraint Systems...............................1-42
Infants and Young Children...........................1-36
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-52
Older Children.............................................1-33
Securing a Child Restraint Designed for
the LATCH System...................................1-54
Securing a Child Restraint in a Center
Seat Position...................................1-56, 1-57
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-54
Securing a Child Restraint in the Right
Front Seat Position...................................1-58
Top Strap...................................................1-49
Top Strap Anchor Location............................1-50
Where to Put the Restraint...........................1-45
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2003 - Savana OM

Chime Level Adjustment..................................3-76
Cigarette Lighter.............................................3-16
Cleaning
Inside of Your Vehicle..................................5-82
Outside of Your Vehicle................................5-85
Underbody Maintenance...............................5-88
Weatherstrips..............................................5-85
Cleaning Exterior Lamps/Lenses.......................5-86
Climate Control System...................................3-17
Rear Air Conditioning and Heating System......3-19
Rear Heating System...................................3-18
Compact Disc Messages.................3-48, 3-59, 3-71
Control of a Vehicle.......................................... 4-6
Coolant
Engine Temperature Gage............................3-32
Heater, Engine............................................2-23
Low Warning Light.......................................3-33
Cooling System..............................................5-28
Cruise Control.................................................. 3-9
Cruise Control Light........................................3-38
Current and Past Model Order Forms................7-11
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2Customer Assistance Information (cont.)
GM Mobility Program for Persons with
Disabilities................................................ 7-5
Reporting Safety Defects to General Motors....7-10
Reporting Safety Defects to the Canadian
Government............................................7-10
Reporting Safety Defects to the United States
Government.............................................. 7-9
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-10
D
Daytime Running Lamps..................................3-13
Daytime Running Lamps Indicator Light.............3-39
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-21
Directing the Airflow ........................................3-20
Doing Your Own Service Work........................... 5-3
Dome Lamp Override......................................3-14
Dome Lamps .................................................3-15
Door
60/40 Swing-Out Side Door...........................2-13
Cargo Door Relocking.................................... 2-9
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
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2003 - Savana OM