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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 DRL are required on all
vehicles first sold in Canada.
The DRL system makes the headlamps come on
at reduced brightness when the following
conditions are met:
•
The ignition is on.
•
The exterior lamps knob is in automatic
headlamp mode.
•
The light sensor detects daytime light.
•
The transmission is not in PARK (P).
When the DRL are on, only the headlamps will be
on. The taillamps, sidemarker and other lamps
will not be on. The instrument panel will not be lit
up either.
When it begins to get dark, the headlamps
automatically switch from DRL to the regular
headlamps.
Automatic Headlamp System
When it is dark enough outside, the Automatic
Headlamp System turns on the headlamps when
the vehicle is started and after the transaxle
has been shifted out of the PARK (P) position.
The headlamps, taillamps, sidemarker, and parking
lamps will come on. The instrument panel lights
and radio lights will also turn on at normal
brightness. Once on, the system remains on
during these conditions even if the vehicle
is shifted back into PARK (P).
The vehicle has a light sensor on the top of the
instrument panel. Make sure it is not covered or the
system may come on whenever the ignition is on
and the vehicle is shifted out of the PARK (P)
position.
The system could also turn on the lamps when
driving through a parking garage, heavy overcast
weather or a tunnel. This is normal.
179
Summary of Contents for 2007 TrailBlazer
Page 6: ...These are some examples of symbols that may be found on the vehicle 6 ...
Page 92: ... NOTES 92 ...
Page 167: ... NOTES 167 ...
Page 168: ...Instrument Panel Overview 168 ...
Page 298: ... NOTES 298 ...
Page 378: ... NOTES 378 ...
Page 394: ...When you open the hood on the 5 3L V8 engine here is what you will see 394 ...
Page 396: ...When you open the hood on the 6 0L V8 TrailBlazer SS engine here is what you will see 396 ...
Page 512: ... NOTES 512 ...
Page 531: ...Engine Drive Belt Routing 4 2L V6 Engine 5 3L V8 and 6 0L V8 Engines 531 ...