2003 Oldsmobile Bravada check engine

Par1 . on Hills
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.
When You Are Ready to Leave After
Parking on a
Hill
1. Apply your regular brakes and hold the pedal down
while you:
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. When parking uphill, turn your wheels
away from the curb. When parking downhill, turn
your wheels into the curb.
2. Have someone place chocks under the trailer
wheels.
3. When the wheel chocks are in place, release the
4. Reapply the regular brakes. Then apply your
regular brakes until
the chocks absorb the load.
parking brake, and then shift into PARK
(P).
5. Release the regular brakes.
start your engine,
shift into a gear, and
release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the
chocks.
Maintenance When Trailer Towing
Your vehicle will need service more often when you’re
pulling a trailer. See the Maintenance Schedule for more
on this. Things that are especially important in trailer
operation are automatic transmission fluid (don’t overfill),
engine oil, axle lubricant, belt, cooling system and
brake system. Each
of these is covered in this manual,
and the Index will help you find them quickly.
If
you’re trailering, it’s a good idea to review these sections
before you start your trip.
Check periodically
to see that all hitch nuts and bolts
are tight.
4-52

Section 5 Service and Appearance Care
............................................................ Service 5.3
Doing Your Own Service Work
......................... 5-4
Adding Equipment to the Outside of Your
Vehicle 5.4
Fuel 5.5
......................................................
................................................................
Gasoline Octane ............................................ 5.5
Gasoline Specifications
.................................... 5.5
California Fuel
............................................... 5.6
Filling Your lank
............................................ 5-7
Filling a Portable Fuel Container
....................... 5-9
Checking Things Under the Hood .................... 5-10
Hood Release
.............................................. 5-10
Engine Compartment Overview
....................... 5-12
Engine
Oil ................................................... 5-13
Engine Air Cleaner/Filter
............................... 5-18
Automatic Transmission Fluid
......................... 5-20
Engine Coolant
............................................. 5-22
Radiator Pressure Cap
.................................. 5-24
Engine Overheating
....................................... 5-24
Cooling System
............................................ 5-26
Engine Fan Noise
.................................. 5-32
Power Steering Fluid
.................... ..... 5-33
....................................................... Additives 5.6
Fuels in Foreign Countries
............................... 5-6 Windshield
Washer Fluid
................................ 5-33
Brakes
........................................................ 5-34
Battery
........................................................ 5-38
Jump Starting
.......... ............................. 5-39
All-Wheel Drive ............. ......................... 5-44
Rear Axle ....................................................... 5-46
Bulb Replacement .......................................... 5.47
Taillamps and Turn Signal Lamps
................... 5.47
Replacement Bulbs
....................................... 5.48
Windshield Wiper Blade Replacement .............. 5.49
.............................................................. Tires 5.52
Inflation
.. lire Pressure ................................ 5.53
lire Inspection and Rotation
........................... 5.53
Buying New Tires
......................................... 5.56
Uniform Tire Quality Grading
.......................... 5.57
Wheel Replacement
...................................... 5.58
lire Chains
.................................................. 5.60
Accessory Inflator
......................................... 5.60
If a lire Goes Flat ........................................ 5.61
When It
Is Time
for New Tires ....................... 5-55
Wheel Alignment and lire Balance
.................. 5-58
Changing a Flat lire
..................................... 5-62
5-
1

California Fuel
If your vehicle is certified to meet California Emission
Standards (see the underhood emission control label), it
is designed
to operate on fuels that meet California
specifications. If this fuel is not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal specifications, but emission control system performance
may be affected. The malfunction indicator lamp may
turn on (see
Malfunction Indicator Lamp on page 3-35 )
and your vehicle may fail a smog-check test. If this
occurs, return
to your authorized GM dealer for
diagnosis. If it is determined that the condition is caused
by the type of fuel used, repairs may not
be covered
by your warranty.
Additives
To provide cleaner air, all gasolines in the United States
are now required
to contain additives that will help
prevent engine and fuel system deposits from forming,
allowing your emission control system
to work
properly. You should not have
to add anything to your
fuel. Gasolines containing oxygenates, such as
ethers and ethanol, and reformulated gasolines may be
available in your area
to contribute to clean air.
General Motors recommends
that you use these
gasolines, particularly
if they comply with the
specifications described earlier.
5-6
Notice: Your vehicle was not designed for fuel that
contains methanol. Don’t use fuel containing
methanol. It can corrode metal parts in your fuel
system and also damage the plastic and rubber
parts.
That damage wouldn’t be covered under your
warranty.
Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy gasoline
whether the fuel contains
MMT. General Motors does
not recommend the use
of such gasolines. Fuels
containing MMT can reduce the life of spark plugs and
the performance of the emission control system may
be affected. The malfunction indicator lamp may turn on.
If this occurs, return to your authorized GM dealer for
service.
Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard
to find. Never use leaded gasoline or any other fuel
not recommended in the previous text on fuel. Costly
repairs caused by use of improper fuel wouldn’t be
covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you’ll be driving.

Checking Things Under the Hood
Things that burn can get on hot engine parts
and start
a fire. These include liquids like fuel,
oil, coolant, brake fluid, windshield washer and
other fluids, and plastic or rubber. You or
others could be burned. Be careful not to drop
or spill things that
will burn onto a hot engine.
Hood Release
To open the hood, first
pull the handle located
inside the vehicle
on the lower driver’s side
of the instrument
panel.
5-1 0

A. Coolant Recovery Tank
B. Engine Air CleanedFilter
C. Windshield Washer Fluid Reservoir
D. Engine Air Cleaner/Filter Indicator (If Equipped)
E. Power Steering Fluid Reservoir
F. Automatic Transmission Dipstick
G. Engine Oil Dipstick
H. Radiator Pressure Cap
I. Engine Oil Fill Cap
J. Remote Negative (-) Terminal Marked “GND”
K. Brake Master Cylinder
L. Battery
M. Engine Compartment Fuse Block Before closing
the hood, be sure all filler caps are on
properly. Then lift the hood to relieve pressure on
the hood prop. Remove the hood prop from its slot in
the hood and return the prop to its retainer. Then pull the
hood down firmly to close. It will latch when dropped
from
6 to 8 inches (15 to 20 cm) without pressing on
the hood.
Engine Oil
You should check your engine oil level regularly; this is
an added reminder.
5-1 3

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
handle is a yellow ring located in the engine
compartment toward the passenger’s side
of
the vehicle. See Engine
Compartment Overview on
page
5- 12 for 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.
Pull out the dipstick and clean it with a paper towel or
cloth, then push
it back in all the way. Remove it again,
keeping the tip down, and check the level.
5-1 4

As in the chart shown previously, SAE 5W-30 is the
only viscosity grade recommended for your vehicle. You
should look for and use only oils which have the API
Starburst symbol and which are also identified as
SAE 5W-30.
If you cannot find such SAE 5W-30 oils,
you can use an SAE IOW-30 oil which has the API
Starburst symbol,
if it's going to be 0°F (-18°C)
or above. Do not use other viscosity grade oils, such as
SAE IOW-40 or SAE 20W-50 under any conditions.
Notice: Use only engine oil with the American
Petroleum Institute Certified For Gasoline Engines
starburst symbol. Failure to use the recommended
oil can result in engine damage not covered by
your warranty.
GM Goodwrench@ oil meets all the requirements for
your vehicle.
If you are in an area of extreme cold, where the
temperature falls below -20°F (-29"C), it is
recommended that you use either an SAE 5W-30
synthetic
oil or an SAE OW-30 oil. Both will provide
easier cold starting and better protection for your engine
at extremely low temperatures.
Engine Oil Additives
Don't add anything to your oil. The recommended oils
with the starburst symbol are all you will need for
good performance and engine protection.
When to Change Engine Oil
(GM Oil Life System)
Your vehicle has a computer system that lets YO
when to change the engine oil-and filter. This is
IU know
based on engine revolutions and engine temperature,
and not on mileage. Based on driving conditions,
the mileage at which an oil change will be indicated can
vary considerably. For the oil life system to work
properly, you must reset the system every time the oil is
changed.
When the system has calculated that oil life has been
diminished, it will indicate that an oil change
is
necessary. A CHANGE ENG OIL light in the Driver
Information Center (DIC) will come on. Change your oil
as soon
as possible within the next two times you
stop for fuel. It is possible that,
if you are driving under
the best conditions, the oil life system may not
indicate that an oil change is necessary for over a year.
However, your engine oil and filter must be changed
at least once a year and at this time the system must be
reset. It is also important to check your oil regularly
and keep it at the proper level.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles (5
000 km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed.
5-1
7

1-1 Your vehicle may have this
feature. The engine air cleanedfilter assembly has
an indicator that lets
you know when the air
filter is dirty and needs to
be serviced. The
indicator is located on the
engine air cleaner/filter
air duct.
The service window
(A) with the percentage scale
shows the amount of engine air cieanedfilter life used.
When both service window
(A) and service window
(B) turn orange, replace the engine air cleanedfilter
After changing the engine air cleaner/filter, press
the button on top of the indicator to reset it.
For vehicles without an indicator, refer
to the
maintenance schedule to determine when
to replace the
engine air cleaner/filter. To
check or replace the engine air cleaner/filter, do the
following:
1. Remove the three screws on the engine air
2. Twist out the old engine air cleaner/filter and
3. Reinstall the cover.
cleanedfilter and lift
off the cover.
replace it with a new one,
if needed.
per
______ ~ ---e eng.--> with the air cleaner/filter
off can cause you or others to be burned. The
air cleaner not only cleans the air,
it stops
flame if the engine backfires.
If it isn’t there
and the engine backfires, you could be burned. Don’t drive with
it off, and be careful working
on the engine with the air cleanedfilter
off.
Notice: If the air cleaner/filter is off, a backfire can
cause a damaging engine fire.
And, dirt can
easily get into your engine, which will damage
it.
Always have the air cleaner/filter in place when
you’re driving.
5-1 9