brake sensor Oldsmobile Alero 2003 Owner's Manuals

Notice: If your vehicle seems to start up rather
slowly, or if
it seems not to shift gears as you go
faster, something may be wrong with a transaxle system sensor. If you drive very far that way, your
vehicle can be damaged.
So, if this happens,
have your vehicle serviced right away. Until then,
you can use SECOND
(2) when you are driving
less than
35 mph (55 kmh) and AUTOMATIC
OVERDRIVE (D) for higher speeds.
THIRD
(3): This position is also used for normal driving.
However, it offers more power and lower fuel economy
than AUTOMATIC OVERDRIVE (D). Here are some
times you might choose THIRD
(3) instead of
AUTOMATIC OVERDRIVE (D):
When driving on hilly, winding roads.
When towing a trailer, so there is less shifting
When going down a steep hill.
between
gears. SECOND
(2): This
position gives you more power but
lower fuel economy.
You can use SECOND (2) on
hills. It can help control your speed as you go down
steep mountain roads, but then you would also want to
use your brakes off and on.
Notice: Don’t drive in SECOND (2) for more than
25 miles (40 km), or at speeds over 55 mph
(90 km/h), or you can damage your transaxle. Use
THIRD
(3) or AUTOMATIC OVERDRIVE (D) as
much as possible. Don’t shift into SECOND
(2)
unless you are going slower than 65 mph (105 kdh)
or you can damage your engine.
FIRST
(1): This position gives you even more power
but lower fuel economy than SECOND
(2). You can use
it on very steep hills, or in deep snow or mud. If the
shift lever is put in FIRST
(I), the transaxle won’t shift
into first gear until the vehicle is going slowly enough.
Notice: If your front wheels won’t turn, don’t
try to drive. This might happen if you were stuck
in
very deep sand or mud or were up against a solid
object. You could damage your transaxle. Also,
if you stop when going uphill, don’t hold your
vehicle there with only the accelerator pedal. This
could overheat and damage the transaxle. Use your
brakes to hold your vehicle
in position on a hill.
2-24

The exterior lamps control has three positions:
pf (Parking Lamps): Turn the control to this position
to turn on the parking lamps, together with the
following.
Sidemarker Lamps
Taillamps
License Plate Lamps
0 Instrument Panel Lights
- - EO (Headlamps): Turn the control to this position to
turn on the headlamps, together with the previously
listed lamps and lights.
AUTO: Turn the control to this position to turn the
headlamps, taillamps and parking lamps on and
off automatically while the ignition is on, by sensing how
dark it is outside. For more information see Automatic
Headlamp System later in this section.
Daytime Running Lamps (DRL)
Daytime Running Lamps (DRL) can make it easier for
others to see the front
of your vehicle during the
day. DRL can be helpful
in many different driving
conditions, but they can be especially helpful in the
short
periods after dawn and before sunset. Fully functional
daytime running lamps are required on all vehicles
first sold in Canada. The DRL
system will make your low-beam headlamps
come on at a reduced brightness when the following
conditions are met:
The ignition is on.
the exterior lamps control is in AUTO or the parking
the light sensor detects daytime light,
lamps
only position.
the parking brake is released, and
the shift lever is not in PARK (P) on vehicles with
When the DRL system
is on, the taillamps, sidemarker
lamps, parking lamps and instrument panel lights
will not be illuminated unless you have turned the
exterior lamps control to the parking lamp position.
As with any vehicle, you should turn on the regular
headlamp system when you need it. an
automatic transaxle only.
Automatic Headlamp System
When it is dark enough outside, your Automatic
Headlamp System will turn on your headlamps at the
normal brightness along with other lamps such as
the taillamps, sidemarker, parking lamps and the
instrument panel lights. The radio lights will also be dim.
Your vehicle is equipped with a light sensor on the
top of the instrument panel under the defroster grill,
so
be sure it is not covered which will cause the system
to be on whenever the ignition
is on.
3-1 4

The system may also be on when driving through a
parking garage, heavy overcast weather or a tunnel.
This is normal.
There is a delay in the transition between the daytime
and nighttime operation of the DRL and the Automatic
Headlamp System
so that driving under bridges or bright
overhead street lights does not affect the system. The
DRL and Automatic Headlamp Systems will only be
affected when the light sensor sees a change in lighting
lasting longer than this delay.
To idle your vehicle with the system off, set the parkin9
brake while the ignition is
off. Then start the vehicle.
The system will stay
off until you release the parking
brake.
As with any vehicle, you should turn on the regular
headlamps when you need them.
Headlamps Off in PARK (P)
To turn the headlamps off when it is dark outside, turn
the exterior lamps control
to the parking lamp position.
In this position, the parking lamps, sidemarker lamps,
taillamps, license plate lamps and instrument panel
lights will be on, but the headlamps will be off.
To turn on the headlamps along with the other lamps
when it is dark outside, turn the exterior lamps control
to
the AUTO or headlamp position.
Delayed Headlamps
The delayed headlamps feature will continue to
illuminate the headlamps for
20 seconds after the key is
turned to
OFF, then the headlamps will automatically
turn off.
To override the
20 second delayed headlamp feature
while it is active turn the turn signal/muItifunction
lever up one position and then back
to AUTO.
Fog Lamps
If your vehicle has this feature, the button for your fog
lamps is located on the instrument panel, to the left
of the steering wheel, beside the instrument panel
brightness thumbwheel.
When using the fog lamps, the ignition must be on as
well as the parking lamps or the low-beam headlamps.
Press the button to turn the fog lamps on. An indicator
light on the button will glow when the fog lamps are on.
Press the button again to turn the fog lamps off.
TI-- I--. I ... :I1 I ..... LT . I. . . I I luy I~III~ WIII Lull1 UII WII~II~V~I iile iliyil-bed1r1
headlamps are turned on. When the high beams
are turned off, the fog lamps will come on again.
3-1 5

Relays 16
17
18
19
20 21
22
Fuses
23-32 33
34
35
36
37
36
39
40 Usage
Air Conditioning Compressor
Not Used
Fuel Pump
Automatic Headlamp System
Automatic Headlamp System
Horn
Daytime Running Lamps (DRL)
Usage
Spare Fuse Holder
Rear Defog
ACC~SSGP~ Power Outlets, Cigarette
Lighter
Generator Not Used
Air Conditioning Compressor, Body
Function Control Module
Powertrain Control Module (PCM)
Anti-Lock Brakes (ABS)
A ..I -._-- +:- T --.---., I, r\ULUI I Idllb I I C€l13C€AlG
Fuses 41
42
43
44
45
46 47
48 49
50
51
52
53
54
55
56
57 Usage
Ignition System
Back-up Lamps, Brake Transaxle
Shift Interlock
Horn
PCM
Parking Lamps
Climate Control System, Air
Conditioning
Canister Vent Valve, Exhaust
Oxygen Sensors
Fuel Pump, Injectors
Not Used
Right Headlamp
Left Headlamp
Cooling Fan
#2
HVAC Blower (Climate Control)
Crank Cooling Fan
#2 Ground
Fuse Puller for Mini Fuses
Not Used
5-85