2003 GMC SAFARI fuel

A. Windshield Washer Fluid
B. Engine Coolant
C. Engine Oil Dipstick
D. Transmission Dipstick
E. Engine Air Cleaner/Filter
F. Engine Oil Fill
G. Brake Master Cylinder Reservoir
H. Power Steering Fluid Reservoir
I. Battery
Engine Oil
Checking Engine Oil
It’s a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil
must be warm and the vehicle must be on level ground.The engine oil dipstick has a yellow ring and is located
near the center of the engine compartment. See
Engine Compartment Overview on page 5-12for more
information on location.
Turn off the engine and give the oil several minutes to
drain back into the oil pan. If you don’t, the oil
dipstick might not show the actual level.
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2003 - Safari OM

Engine Fan Noise
This vehicle has a clutched engine cooling fan. When
the clutch is engaged, the fan spins faster to provide
more air to cool the engine. In most everyday driving
conditions, the clutch is not fully engaged. This improves
fuel economy and reduces fan noise. Under heavy
vehicle loading, trailer towing and/or high outside
temperatures, the fan speed increases when the clutch
engages. So you may hear an increase in fan noise.
This is normal and should not be mistaken as the
transmission slipping or making extra shifts. It is merely
the cooling system functioning properly. The fan will
slow down when additional cooling is not required and
the clutch disengages.
You may also hear this fan noise when you start the
engine. It will go away as the fan clutch disengages.
Power Steering Fluid
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2003 - Safari OM

Ination -- Tire Pressure
The Certification/Tire label, which is on the rear edge of
the driver’s door, shows the correct inflation pressures
for your tires when they’re cold.“Cold”means your
vehicle has been sitting for at least three hours or driven
no more than 1 mile (1.6 km).
Notice:Don’t let anyone tell you that underination
or overination is all right. It’s not. If your tires
don’t have enough air (underination), you can get
the following:
Too muchexing
Too much heat
Tire overloading
Bad wear
Bad handling
Bad fuel economy
If your tires have too much air (overination), you
can get the following:
Unusual wear
Bad handling
Rough ride
Needless damage from road hazards
When to Check
Check your tires once a month or more.
Don’t forget your compact spare tire. It should be at
60 psi (420 kPa).
How to Check
Use a good quality pocket-type gage to check tire
pressure. You can’t tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they’re underinflated.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and
moisture.
Tire Inspection and Rotation
Tires should be rotated every 6,000 to 8,000 miles
(10 000 to 13 000 km).
Any time you notice unusual wear, rotate your tires as
soon as possible and check wheel alignment. Also
check for damaged tires or wheels. SeeWhen It Is Time
for New Tires on page 5-60andWheel Replacement
on page 5-63for more information.
Make sure 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. See
Changing a Flat Tire on page 5-65.
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Sheet Metal Damage
If your vehicle is damaged and requires sheet metal
repair or replacement, make sure the body repair shop
applies anti-corrosion material to parts repaired or
replaced to restore corrosion protection.
Original manufacturer replacement parts will provide the
corrosion protection while maintaining the warranty.
Finish Damage
Any stone chips, fractures or deep scratches in the
finish should be repaired right away. Bare metal
will corrode quickly and may develop into major repair
expense.
Minor chips and scratches can be repaired with touch-up
materials avaliable from your dealer. Larger areas of
finish damage can be corrected in your dealer’s
body and paint shop.
Underbody Maintenance
Chemicals used for ice and snow removal and dust
control can collect on the underbody. If these are not
removed, accelerated corrosion (rust) can occur on
the underbody parts such as fuel lines, frame,floor pan
and exhaust system even though they have corrosion
protection.At least every spring,flush these materials from the
underbody with plain water. Clean any areas where mud
and debris can collect. Dirt packed in close areas of
the frame should be loosened before beingflushed.
Your dealer or an underbody car washing system can
do this for you.
Chemical Paint Spotting
Some weather and atmospheric conditions can create a
chemical fallout. Airborne pollutants can fall upon and
attack painted surfaces on your vehicle. This damage
can take two forms: blotchy, ringlet-shaped
discolorations, and small irregular dark spots etched into
the paint surface.
Although no defect in the paint job causes this, GM will
repair, at no charge to the owner, the surfaces of
new vehicles damaged by this fallout condition within
12 months or 12,000 miles (20 000 km) of purchase,
whichever occursfirst.
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2003 - Safari OM

Relays Usage
A/C Relay
(Rear Heat
and A/C)Rear/Heat and Air Conditioning
Upfitter-ACCY
RelayUpfitter Accessory
Starter Enable
RelayStarter
A/C Enable
RelayAir Conditioning
Headlamps
RelayHeadlamps
Fuel Pump
RelayFuel Pump
Fuse/Circuit
BreakerUsage
UPFITTER-BATT Upfitter Battery Power Stud, Trailer
Wiring Harness
UPFITTER-ACCY Upfitter Accessory RelayFuse/Circuit
BreakerUsage
Spare Not used
Spare Not used
Spare Not used
ECM-1B Fuel Pump Relay and Motor, VCM,
Oil Pressure Switch/Sender
HORN Horn Relay and Horn
A/C COMP Air Conditioning Enable Relay and
Compressor
RR HTR/AC Rear Heater and Air Conditioning
ATC Active Transfer Case-L Van
FRT HVAC Front Heater and Air Conditioning
ENG-I Oxygen Sensors, Camshaft Position
Sensor, Mass Air Flow Sensor,
Evaporative Emission Canister Vent
Solenoid
IGN-E Air Conditioning Enable Relay Coil
ECM-I Fuel Injectors 1–6, Crankshaft
Position Sensot, VCM, Coil Driver
Module (EST), Ignition Coil
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Capacities and Specications
Please refer toPart D: Recommended Fluids and Lubricants on page 6-34for more information. See refrigerant
charge label under the hood for charge capacity information and requirements.
Engine Specications
Engine RPO Transmission Spark Plug Gap Firing OrderWheel Nut
Torque
“Vortec”4300 V6 MFI* LU3 M300.060 inches
(1.52 mm)1–6–5–4–3–2140 lb ft
190Y
*Micro Fuel Injection
Tire Pressures–SeeLoading Your Vehicle on page 4-29.
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Capacities and Specifications
ApplicationCapacities
English Metric
Cooling Capacities
Quantity without Rear Heater
Quantity with Rear Heater13.5 quarts
16.5 quarts12.8 L
15.6 L
Engine Oil with Filter 4.5 quarts 4.3 L
Fuel Tank 27.0 gallons 101.8 L
Transmission Fluid (Drain and Refill) 5.0 quarts 4.7 L
Differential Fluid
Front Axle
Rear Axle2.6 pints
3.5 pints1.2 L
1.7 L
Refrigerant Type 134a
Front A/C
Front and Rear A/C2.25 lbs.
3.0 lbs.1.02 kg
1.36 kg
All capacities are approximate. When adding, be sure to fill to the appropriate level, as recommended in this
manual. recheck the fluid level after filling. SeePart D: Recommended Fluids and Lubricants on page 6-34for
more information.
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Normal Maintenance Replacement Parts
Replacement part numbers listed in this section are based on the latest information available at the time of printing,
and are subject to change. If a part listed in this manual is not the same as the part used in your vehicle when it was
built, or if you have any questions, please contact your GM truck dealer.
Part Number
Engine Oil FilterPF47*
Engine Air Cleaner/Filter A1163C*
Positive Crankcase Ventilation (PCV) Valve CV769C*
Spark Plugs41–932*
Fuel FilterGF481*
Wiper Blades (Front)
Type
LengthTrico 22110158
18 inches (45.7 cm)
Wiper Blades (Rear)
Type
LengthTrico 22154396
14 inches (35.5 cm)
* ACDelco
®®part number
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2003 - Safari OM