2003 Oldsmobile Bravada tow

Engine Fan Noise
6. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for the
engine cooling fan.
7. By this time, the coolant level inside the radiator
filler neck may be lower.
If the level is lower, add
more of the proper
DEX-COOL@ coolant mixture
through the filler neck until the level reaches
the base of the filler neck.
8. Then replace the pressure cap. At any time during
this procedure
if coolant begins to flow out of the
filler neck, reinstall the pressure cap. Be sure
the pressure cap is hand-tight. 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 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.
5-32

The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The first rotation
is the most important. See “Part A: Scheduled
Maintenance Services,” in Section
6, for scheduled
rotation intervals.
When rotating your tires, always use the correct rotation
pattern shown here.
After the tires have been rotated, adjust the front and
rear inflation pressures as shown on the
Certificationnire label. Make certain that
all wheel nuts
are properly tightened. See “Wheel
Nut Torque”
under
Capacities and Specifications on page 5-93.
Rust c. dirt or. - wheel, or on the parts to
which
it is fastened, can make wheel nuts
become loose after a time.
The wheel could
come
off and cause an accident. When you
change a wheel, remove any rust
or dirt from
places where the wheel attaches to the vehicle.
In an emergency, you can use a cloth or
a
paper towel to do this; but be sure to use a
scraper
or wire brush later, if you need to, to
get
all the rust or dirt off. See “Changing a Flat
Tire” in the Index.
5-54

To use the air inflator attach the appropriate nozzle
adapter to the end of the hose
if required. Then attach
that end of the hose to the object you wish to inflate.
Attach the other end of the hose to the outlet.
Press and release the switch to turn the air inflator on.
The indicator light will remain on when the inflator is
running.
The system has an internal clock to prevent overheating.
The system will allow about five minutes of running
time, then the compressor will stop. The indicator light
will then begin to flash. When the indicator is off,
the inflator can be started again by pressing the switch.
If the compressor is still hot,
it may only run for a
short time before shutting off again.
Press and release the switch to turn the inflator off.
Place the inflator kit
tools in the pouch and store
it properly. Remove the inflator hose from the outlet
during loading and unloading. Load leveling will
not function with the inflator hose attached
to the inflator
outlet. See ”Electronically Controlled Air Suspension
System” in the Index.
To reinstall the cover, line up the tabs at the back of the
cover, put it in place and latch the tabs.
A continuous flashing indicator light may also indicate a
malfunction in the air suspension system. See
“Electronically Controlled Air Suspension System” in the
Index.
Inllarlllg something too m,.-h can make it
explode, and you or others could be injured.
Be sure to read the inflator instructions, and
inflate any object only to its recommended
If a Tire Goes Flat
It’s unusual for a tire to “blowout” while you’re driving,
especially
if you maintain your tires properly. If air goes
out of a tire, it’s much more likely to leak out slowly.
But
if you should ever have a “blowout”, here are a few
tips about what to expect and what to do:
If a front tire fails, the flat tire will create a drag that
pulls the vehicle toward that side. Take your foot off the
accelerator pedal and grip the steering wheel firmly.
Steer to maintain lane position, and then gently brake to
a stop well out of the traffic lane.
5-61

The tools you'll be using include the wheel wrench (A),
tire blocks (B), extension (socket end) (C), handle
(jack end)
(D), and jack (E).
The following instructions explain how to remove the
spare tire mounted underneath your vehicle.
Notice: Never remove or restow a tire from/to a
storage position under the vehicle while the vehicle
is supported by a jack. Always tighten the tire
fully against the underside
of the vehicle when
restowing.
f
1. To remove the underbody-mounted spare, insert
the socket end of the extension on a
45" angle
downward into the hoist drive shaft hole. This will
be exposed when the rear gate is open and is
just above the rear bumper. Be sure the socket end
of the extension connects into the hoist shaft.
5-64

Secondary Latch System
Your vehicle has an underbody mounted tire hoist
assembly equipped with
a secondary latch system. It’s
designed to stop the spare or flat road tire from
suddenly falling
off your vehicle if the cable holding the
spare tire
is damaged. For the secondary latch to
work, the tire must be stowed with the valve stem
pointing
up. See “Storing a Flat or Spare Tire and Tools”
for instructions on storing the spare or flat tire correctly.
Before beginning this procedure read all the
instructions. Failure to read and follow the
instructions could damage the hoist assembly
and you and others could get hurt. Read and
follow the instructions listed below. Someone standing too close during the
procedure could be injured by the
jack. If the
spare tire does not slide
off the jack
completely, make sure no one is behind you
or
on either side of you as you pull the jack out
from the spare.
1
To release the spare tire from the secondary latch do
the following:
5-66

1. Check under the vehicle
to see
if the cable is
visible.
2. If it is not visible, proceed to Step 6.
If visible, first try to tighten the cable by turning the
wheel wrench clockwise until you hear two clicks
or feel it skip twice. You cannot overtighten
the cable.
3. Loosen the cable by turning the wheel wrench
counterclockwise three or four turns.
4. Repeat this procedure at least two times.
If the spare tire lowers to the ground, continue with
Step
2 of “Removing the Spare Tire and Tools”
earlier in this section.
approximately
6 inches (15 cm) of cable is exposed.
5. Turn the wrench counterclockwise until
6. Attach the jack handle, extension and the wheel
wrench to the jack and place it under the vehicle
towards the front of the rear bumper. Position
the center lift point of the jack under the center of
the spare tire.
7. Turn the wrench clockwise to raise the jack until it
lifts the end fitting.
8. Continue raising the jack until the spare tire stops
moving upward and is held firmly in place. The
secondary latch has released and the spare tire is
balancing on the jack.
5-67

5. Raise the vehicle by turning the jack handle
clockwise. Raise the vehicle far enough
off the
ground
so there is enough room for the spare
tire to fit.
6. Remove all the wheel nuts and take off the flat tire.
7. Remove any rust or dirt
from the wheel
bolts,
mounting surfaces
and spare wheel.
Is--- -
Rust or dir n t ---lee-, 3r 4 the p. s to
which
it is fastened, can make the wheel nuts
become loose after
a time. The wheel could
come
off and cause an accident. When you
CAUTION: (Continued) change a
wheel, remove any rust or dirt from
the places where the wheel attaches
to the
vehicle. In an emergency, you can use a cloth
or a paper towel to do this;
but be sure to use
a scraper or wire brush later, if you need to, to
get all the rust or dirt
off.
1
Never use oil or grease on studs tan nnutS. If
you do, the nuts might come loose. Your wheel
could fall
off, causing a serious
8. Place the spare on the wheel mounting surface.
5-71

Storing 9 Flat or Spare Tire and Tmls
n
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury.
In a sudden stop or collision,
loose equipment could strike someone. Store
all these in the proper place.
.
The underbody-mounted spare tire needs to be
stored with the valve stem pointing up. If the
spare tire is stored with the valve stem
pointing downward,
its secondary latch won’t
work properly and the spare tire could loosen
CAUTION: (Continued)
CAUTION: (Continued,
and suddenly fall from your vehicle. If this
happened when your vehicle was being driven,
the tire might contact a person or another
vehicle, causing injury and, of course, damage
to itself as well. Be sure the underbody-
mounted spare tire
is stored with its valve
stem pointing up.
Notice: An aluminum wheel with a flat tire should
always be stored under the vehicle with the hoist. However, storing
it that way for an extended
period could damage the wheel. To avoid this,
always stow the wheel properly with the valve stem
pointing up and have the wheel repaired as soon
as possible.
Follow this diagram to store the underbody-mounted
spare.
5-74