2003 GMC SAVANA radiator cap

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

P
Park (P)
Shifting Into................................................2-27
Shifting Out of............................................2-29
Parking
Brake........................................................2-26
Over Things That Burn.................................2-30
Parking Brake and Automatic Transmission
Park (P) Mechanism Check...........................6-15
Parking on Hills..............................................4-45
Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-12
Part C - Periodic Maintenance Inspections..........6-16
Part D - Recommended Fluids and Lubricants......6-18
PartE-Maintenance Record...........................6-20
Passenger Vans with an Air Bag
Off Switch..................................................1-46
Passenger Vans without an Air Bag
Off Switch..................................................1-45
Passing.................................................4-12, 4-43
Passlock
®......................................................2-20
Payload.........................................................4-31
Plan Ahead When Possible................................ 7-8
Playing a Cassette Tape..................................3-55
Playing a Compact Disc..................3-47, 3-58, 3-66Playing a Specific Loaded
Compact Disc.............................................3-67
Playing the Radio...................3-42, 3-45, 3-49, 3-60
Power
Accessory Outlets........................................3-16
Door Locks.................................................. 2-9
Seat............................................................ 1-3
Steering Fluid.............................................5-35
Windows....................................................2-17
Power Steering................................................ 4-9
Pretensioners, Safety Belt................................1-32
Primary Radio Controls....................................3-71
Q
Questions and Answers About Safety Belts.........1-13
R
Radiator Pressure Cap....................................5-25
Radio Messages.............................3-44, 3-47, 3-55
Radios..........................................................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
Radio with Cassette and CD.........................3-49
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2003 - Savana OM