brake sensor CHEVROLET TRACKER 2002 2.G Owners Manual

2-45 Automatic Light Control (ALC)
Your vehicle is equipped with an automatic light sensor
on top of the instrument panel, so be sure it is not covered.
If it is, the headlamps will remain on continuously.
There is a delay in the transition between the daytime
and nighttime operation of the DRL and the ALC
systems so that driving under bridges or bright overhead
street lights does not affect the system. The DRL and
ALC systems will only be affected when the light sensor
sees a change in lighting lasting longer than this delay.
When it is dark enough outside, or you are driving
through a parking garage, heavy overcast weather or
a tunnel, the ALC will turn on your low
-beam
headlamps at normal brightness. Along with your
vehicle's headlamps, the taillamps, sidemarker, parking
lamps and the instrument panel lights will also turn on.
The radio lights will dim.
When the vehicle is initially started in darkness with the
parking brake engaged, there is a delay before the ALC
will turn on the lights.
As with any vehicle, you should turn on the regular
headlamps when you need them.To disable your vehicle's DRL and ALC functions,
do the following:
1. Before turning the ignition key to ON or START,
set the parking brake.
2. Then turn the ignition key to ON or START.

The ALC will not turn on under any conditions,
even in darkness.

The DRL will not turn on.
The DRL and ALC functions will stay off with the
ignition on, until you release the parking brake.
Once the parking brake is released the DRL will
turn on (if it is daylight) or the ALC will turn on
(if it is dark enough outside).
If you turn the ignition key to ON or START and
then set the parking brake, the DRL will turn off
(in all conditions) and the ALC will remain on (if dark
enough outside). Any other uses of the parking brake
after the engine is turned on will have no effect on the
normal ALC operation.
Lamps On Reminder
If you turn the ignition off, remove the key, open the
door and leave the lamps on, a tone will remind you to
turn off your lamps.