Chevrolet 1998 Cavalier Owner's Manual page 117

The DRL system will make your high-beam headlamps
come on at reduced brightness in daylight when:
0
The ignition is on with the engine running,
The headlamp switch is OFF,
0
The parking brake is released and
0
The transaxle is not in PARK (P) on models with an
automatic transaxle.
This indicator light on your
instrument panel comes on
when the DRL are on.
A flashing DRL telltale indicates a possible burned out
headlamp, or that the vehicle may need service
to
repair
a stuck DRL relay.
When the DRL
are
on, only your high-beam headlamps
will be on at reduced brightness. The taillamps,
sidemarker and other lamps won't be on. Your
instrument panel won't be lit up either.
When you turn on the headlamp switch, your high-beam
headlamps will go out, and your headlamps will come
on. The other lamps that come on with your headlamps
will also come on.
When you turn off the headlamp switch, the regular
lamps will go off, and your high-beam headlamps will
come on at reduced brightness.
To idle your vehicle with the DRL off, set the parking
brake. The DRL will stay off until you release the
parking brake.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
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