Chevrolet 2003 Malibu Owner's Manual page 116

Daytime Running
Daytime Running Lamps
others to see the front of
day. DRL can be helpful
Lamps (DRL)
(DRL) can make it easier for
your vehicle during the
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:
0
The ignition is on,
the exterior lamp control is turned to AUTO or you
have turned on your parking lamps,
the light sensor detects daytime light,
the parking brake is released, and
0
the shift lever is not in PARK (P).
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 or headlamp
position.
The DRL system will remain off any time your vehicle
is in PARK (P) or the parking brake is engaged and
the vehicle speed is less than 8 mph (13 km/h),
for United States vehicles only.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
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