2003 GMC SAVANA cooling

Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted
the same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts or
wheel nuts, replace them only with new GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts and wheel nuts for your vehicle.
{CAUTION:
Using the wrong replacement wheels, wheel
bolts or wheel nuts on your vehicle can be
dangerous. It could affect the braking and
handling of your vehicle, make your tires lose
air and make you lose control. You could have
a collision in which you or others could be
injured. Always use the correct wheel, wheel
bolts and wheel nuts for replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance and tire or tire chain
clearance to the body and chassis.Whenever a wheel, wheel bolt or wheel nut is replaced on
a dual wheel setup, check the wheel nut torque after
100, 1,000 and 6,000 miles (160, 1 600 and 10 000 km)
of driving. For proper torque, see“Wheel Nut Torque”
underCapacities and Specifications on page 5-97.
SeeChanging a Flat Tire on page 5-66for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can’t know how it’s been used
or how far it’s been driven. It could fail suddenly
and cause a crash. If you have to replace a
wheel, use a new GM original equipment wheel.
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2003 - Savana OM

Capacities
ApplicationCapacities
QTY Without
Rear HeaterQTY With
Rear Heater
Cooling System
After refill, the level must be rechecked. See“Cooling System”in the Index.
VORTEC™4300 V6 11.0 quarts (10.4 L) 14.0 quarts (13.2 L)
VORTEC™4800 V8 13.4 quarts (12.7 L) 16.4 quarts (15.5 L)
VORTEC™5300 V8 13.4 quarts (12.7 L) 16.4 quarts (15.5 L)
VORTEC™6000 V8 14.8 quarts (14.0 L) 17.8 quarts (17.0 L)
ApplicationCapacities
English Metric
Engine Oil With Filter
After refill, the level must be rechecked. Add enough engine oil so that thefluid is within the proper operating
range. SeeEngine Oil on page 5-13
VORTEC™4300 V6 (Vin W) 4.5 quarts 4.3 L
VORTEC™4800 V8 ( Vin V) 6.0 quarts 5.7 L
VORTEC™5300 V8 (Vin T) 6.0 quarts 5.7 L
VORTEC™6000 V8 (Vin U) 6.0 quarts 5.7 L
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2003 - Savana OM

Maintenance Schedule......................................6-2
Introduction...................................................6-2
Your Vehicle and the Environment....................6-2
Maintenance Requirements..............................6-2
How This Section is Organized.........................6-3
Part A: Scheduled Maintenance Services...........6-4
Using Your Maintenance Schedule....................6-4
Scheduled Maintenance...................................6-5
Part B: Owner Checks and Services................6-12
At the First 100, 1,000 and 6,000 Miles
(160, 1 600 and 10 000km)........................6-12
At Each Fuel Fill..........................................6-12
At Least Once a Month.................................6-12
At Least Twice a Year...................................6-13At Least Once a Year...................................6-13
Part C: Periodic Maintenance Inspections.........6-16
Steering and Suspension Inspection................6-16
Exhaust System Inspection............................6-16
Fuel System Inspection..................................6-16
Engine Cooling System Inspection...................6-16
Throttle System Inspection.............................6-17
Rear Axle Service.........................................6-17
Transfer Case and Front Axle
(All-Wheel Drive) Inspection........................6-17
Brake System Inspection................................6-17
Part D: Recommended Fluids
and Lubricants..........................................6-18
Part E: Maintenance Record...........................6-20
Section 6 Maintenance Schedule
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2003 - Savana OM

100,000 Miles (166 000 km)
❑Inspect spark plug wires.An Emission Control
Service.
❑Replace spark plugs.An Emission Control Service.
❑Change automatic transmissionuid andlter if the
vehicle’s 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.
❑If you haven’t used your vehicle under severe service
conditions listed previously and, therefore, haven’t
changed your automatic transmissionuid, change
both theuid andlter.
❑Inspect Positive Crankcase Ventilation (PCV) valve.
An Emission Control Service.
150,000 Miles (240 000 km)
❑Drain,ush and rell cooling system (or every
60 months since last service, whichever occursrst).
SeeEngine Coolant on page 5-22for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test the cooling system
and pressure cap.An Emission Control Service.
❑Inspect engine accessory drive belt.An Emission
Control Service.
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2003 - Savana OM

Part C: Periodic Maintenance
Inspections
Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall).You should let your dealer’s
service department or other qualified service center do
these jobs. Make sure any necessary repairs are
completed at once.
Proper procedures to perform these services may be
found in a service manual. SeeService Publications
Ordering Information on page 7-10.
Steering and Suspension Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook-up, binding, leaks,
cracks, chang, etc.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out-of-position parts as well as open seams,
holes, loose connections or other conditions which
could cause a heat build-up in theoor pan or could let
exhaust fumes into the vehicle. SeeEngine Exhaust
on page 2-30.
Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
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.
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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

Door (cont.)
Rear Door Security Locks.............................2-10
Rear Doors.................................................2-15
Sliding Side Door........................................2-11
Driver
Position, Safety Belt.....................................1-14
Driving
At Night.....................................................4-14
City ...........................................................4-19
Defensive..................................................... 4-2
Drunken....................................................... 4-3
Freeway.....................................................4-20
Hill and Mountain Roads..............................4-22
In Rain and on Wet Roads...........................4-16
Winter........................................................4-24
Driving On Grades..........................................4-44
Driving on Snow or Ice....................................4-24
Driving Through Deep Standing Water...............4-18
Driving Through Flowing Water.........................4-18
Driving with a Trailer.......................................4-42
Dual Stage Air Bags........................................1-68
Dual Tire Operation.........................................5-58E
Electrical System
Add-On Equipment......................................5-91
Fuses and Circuit Breakers...........................5-92
Headlamp Wiring.........................................5-91
Windshield Wiper Fuses...............................5-91
Electronic Road-Speed Governor.......................3-26
Emissions Inspection and
Maintenance Programs.................................3-36
Engine
Air Cleaner/Filter.........................................5-17
Battery.......................................................5-40
Change Engine Oil Light...............................3-37
Check and Service Engine Soon Light............3-33
Compartment Overview................................5-12
Coolant......................................................5-22
Coolant Heater............................................2-23
Coolant Temperature Gage...........................3-32
Cooling System Inspection............................6-16
Exhaust.....................................................2-30
Fan Noise..................................................5-34
Oil .............................................................5-13
Overheating................................................5-26
Starting......................................................2-22
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2003 - Savana OM

Inspection
Brake System.............................................6-17
Engine Cooling System................................6-16
Exhaust System..........................................6-16
Fuel System...............................................6-16
Part C - Periodic Maintenance.......................6-16
Steering and Suspension..............................6-16
Throttle System...........................................6-17
Transfer Case and Front Axle
(All-Wheel Drive)......................................6-17
Instrument Panel
Cluster.......................................................3-24
Overview..................................................... 3-2
Instrument Panel Brightness Control..................3-14
Interior Lamps................................................3-14
Interior Plastic Components..............................5-84
J
Jump Starting.................................................5-41
K
Key Lock Cylinders Service..............................6-13
Keyless Entry System....................................... 2-4
Keys............................................................... 2-2
L
Lamps
Exterior......................................................3-12
Interior.......................................................3-14
Lamps On Reminder.......................................3-13
Lap Belt........................................................1-24
Lap-Shoulder Belt...........................................1-14
LATCH System
Child Restraints...........................................1-52
Securing a Child Restraint Designed for
the LATCH System...................................1-54
Leather.........................................................5-84
Leaving Your Vehicle.......................................2-11
Leaving Your Vehicle With the
Engine Running..........................................2-28
Light
Air Bag Off .................................................3-28
Air Bag Readiness.......................................3-27
Anti-Lock Brake System Warning...................3-32
Brake System Warning.................................3-31
Change Engine Oil......................................3-37
Charging System.........................................3-29
Check Gages Warning.................................3-39
Cruise Control.............................................3-38
Daytime Running Lamps Indicator..................3-39
Low Coolant Warning...................................3-33
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2003 - Savana OM