2005 GMC SAFARI overheating

Ashtrays and Cigarette Lighter
The cigarette lighter is on the left of the engine cover
console.
To use the lighter, press it in all the way and let go.
When it’s done heating, it will pop back out by itself.
Notice:Holding a cigarette lighter in while it
is heating will not allow the lighter to back away
from the heating element when it is hot. Damage
from overheating may occur to the lighter or heating
element, or a fuse could be blown. Do not hold a
cigarette lighter in while it is heating. Do not
use anything other than the cigarette lighter in the
heating element.
Notice:Leaving electrical equipment on for
extended periods will drain the battery. Always turn
off electrical equipment when not in use and do
not plug in equipment that exceeds the maximum
amperage rating.The front ashtray is located above the passenger’s side
front cupholder. To remove the front ashtray, open it
and gently pull it slightly past its stop.
To remove the ashtray on the sliding door, open it, then
press down on the inside tab and pull it out.
You may have another ashtray on the driver’s sidewall.
Press the right side to turn the ashtray around for
use. To remove the ashtray, open it and gently pull it off
the hinge.
Notice:If you put papers or other ammable items
in the ashtray, hot cigarettes or other smoking
materials could ignite them and possibly damage
your vehicle. Never put ammable items in the
ashtray.
3-20

Anti-Lock Brake System
Warning Light
With the anti-lock brake
system, this light will come
on when you start your
engine and may stay on
for several seconds.
That’s normal.
If the light stays on, or comes on when you’re driving,
your vehicle needs service. If the regular brake
system warning light isn’t on, you still have brakes, but
you don’t have anti-lock brakes. If the regular brake
system warning light is also on, you don’t have anti-lock
brakes and there’s a problem with your regular
brakes. See “Brake System Warning Light” earlier in
this section.
The anti-lock brake system warning light should come
on briey when you turn the ignition key to RUN. If
the light doesn’t come on then, have it xed so it will be
ready to warn you if there is a problem.
Engine Coolant Temperature Gage
This gage shows the
engine coolant
temperature. If the gage
pointer moves to the
red area, your engine is
too hot!
It means that your engine coolant has overheated. If
you have been operating your vehicle under normal
driving conditions, you should pull off the road, stop your
vehicle and turn off the engine as soon as possible.
SeeEngine Overheating on page 5-29.
3-31

Driving On Grades
Reduce speed and shift to a lower gearbeforeyou start
down a long or steep downgrade. If you don’t shift
down, you might have to use your brakes so much that
they would get hot and no longer work well.
You can tow in DRIVE (D). You may want to shift
the transmission to THIRD (3) or, if necessary, a lower
gear selection if the transmission shifts too often
(e.g., under heavy loads and/or hilly conditions).
When towing at high altitude on steep uphill grades,
consider the following: Engine coolant will boil at a lower
temperature than at normal altitudes. If you turn your
engine off immediately after towing at high altitude
on steep uphill grades, your vehicle may show signs
similar to engine overheating. To avoid this, let the
engine run while parked (preferably on level ground)
with the transmission in PARK (P) for a few minutes
before turning the engine off. If you do get the overheat
warning, seeEngine Overheating on page 5-29.
Parking on Hills
{CAUTION:
You really should not park your vehicle, with a
trailer attached, on a hill. If something goes
wrong, your rig could start to move. People
can be injured, and both your vehicle and the
trailer can be damaged.
But if you ever have to park your rig on a hill, here’s
how to do it:
1. Apply your regular brakes, but don’t shift into
PARK (P) yet.
2. Have someone place chocks under the trailer
wheels.
3. When the wheel chocks are in place, release the
regular brakes until the chocks absorb the load.
4. Reapply the regular brakes. Then apply your
parking brake, and shift to PARK (P).
5. Release the regular brakes.
4-41

Service............................................................5-3
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of
Your Vehicle..............................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Specications....................................5-5
California Fuel...............................................5-6
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling Your Tank............................................5-8
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-14
Engine Cover...............................................5-18
Engine Air Cleaner/Filter................................5-22
Automatic Transmission Fluid.........................5-24
Engine Coolant.............................................5-27
Radiator Pressure Cap..................................5-29
Engine Overheating.......................................5-29
Cooling System............................................5-31
Engine Fan Noise.........................................5-36Power Steering Fluid.....................................5-36
Windshield Washer Fluid................................5-37
Brakes........................................................5-38
Battery........................................................5-42
Jump Starting...............................................5-42
All-Wheel Drive..............................................5-47
Rear Axle.......................................................5-48
Front Axle......................................................5-49
Bulb Replacement..........................................5-50
Halogen Bulbs..............................................5-50
Headlamps and Sidemarker Lamps.................5-50
Front Turn Signal and Parking Lamps..............5-54
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps.........................................5-54
Replacement Bulbs.......................................5-56
Windshield Wiper Blade Replacement..............5-56
Tires..............................................................5-57
Tire Sidewall Labelling...................................5-58
Tire Terminology and Denitions.....................5-60
Ination - Tire Pressure.................................5-63
Tire Inspection and Rotation...........................5-64
When It Is Time for New Tires.......................5-66
Buying New Tires.........................................5-66
Section 5 Service and Appearance Care
5-1

Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs rst, if you add
only DEX-COOL
®extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem
with engine overheating, seeEngine Overheating on
page 5-29.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as they
should.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
What to Use
Use a mixture of one-halfclean, drinkable waterand
one-half DEX-COOL®coolant which will not damage
aluminum parts. If you use this coolant mixture, you do
not need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and the proper coolant.
5-27

{CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Do not spill coolant on a hot engine.
Occasionally check the coolant level in the radiator. For
information on how to add coolant to the radiator,
seeCooling System on page 5-31.
Radiator Pressure Cap
Notice:If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.The radiator pressure cap
is located in the engine
compartment on the
passenger’s side of the
vehicle. SeeEngine
Compartment Overview on
page 5-12for more
information on location.
Engine Overheating
You will nd an engine coolant temperature gage on
your vehicle’s instrument panel. SeeEngine Coolant
Temperature Gage on page 3-31.
5-29

Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service,
see your GM Warranty booklet for details. For additional
information refer to the tire manufacturer’s booklet
included with your vehicle’s Owner’s Manual.{CAUTION:
Poorly maintained and improperly used tires
are dangerous.
Overloading your tires can cause
overheating as a result of too much
friction. You could have an air-out and a
serious accident. SeeLoading Your
Vehicle on page 4-27.
Underinated tires pose the same danger
as overloaded tires. The resulting accident
could cause serious injury. Check all
tires frequently to maintain the
recommended pressure. Tire pressure
should be checked when your tires are
cold. SeeInflation - Tire Pressure on
page 5-63.
Overinated tires are more likely to be
cut, punctured or broken by a sudden
impact — such as when you hit a pothole.
Keep tires at the recommended pressure.
Worn, old tires can cause accidents. If
your tread is badly worn, or if your tires
have been damaged, replace them.
5-57

E
Electrical System
Add-On Equipment......................................5-94
Fuses and Circuit Breakers...........................5-95
Headlamp Wiring.........................................5-94
Instrument Panel Fuse Block.........................5-96
Power Windows and Other Power Options......5-95
Underhood Fuse Block.................................5-98
Windshield Wiper Fuses...............................5-95
Engine
Air Cleaner/Filter.........................................5-22
Battery.......................................................5-42
Check and Service Engine Soon Light............3-32
Coolant......................................................5-27
Coolant Heater............................................2-19
Coolant Temperature Gage...........................3-31
Cooling System Inspection............................6-28
Cover........................................................5-18
Engine Compartment Overview......................5-12
Exhaust.....................................................2-26
Fan Noise..................................................5-36
Fuel Regulator............................................2-19
Oil .............................................................5-14
Overheating................................................5-29
Starting......................................................2-18Entry Lighting.................................................3-18
Event Data Recorders (EDR)............................. 7-9
Exit Lighting...................................................3-18
Extender, Safety Belt.......................................1-32
Exterior Lamps...............................................3-15
F
Filter
Engine Air Cleaner......................................5-22
Finish Damage...............................................5-91
Fixed Mast Antenna........................................3-53
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-71
Flat Tire, Changing.........................................5-72
Flat Tire, Storing.............................................5-82
Fluid
Automatic Transmission................................5-24
Power Steering...........................................5-36
Windshield Washer......................................5-37
Front Axle......................................................5-49
5