The DRL system will come on when the following
conditions are met:
•
The ignition is on
•
The exterior lamps control is in AUTO
•
The light sensor determines it is daytime
When the DRL are on, only your DRL lamps will
be on. The taillamps, sidemarker, and other lamps
will not be on. The instrument panel back
lighting will not be on either.
When it begins to get dark, the automatic
headlamp system will switch from DRL to the
headlamps.
When you turn the headlamp switch off, the
headlamps will go off.
Automatic Headlamp System
When it is dark enough outside, the automatic
headlamp system will turn on the headlamps at the
normal brightness, along with the taillamps,
sidemarker, parking lamps, and the instrument
panel lights. The radio back lighting will also
be dimly lit.
To turn off the automatic headlamp system, turn
the exterior lamps switch to the off position.
Turning off the automatic headlamp system with
the headlamp switch is not available for vehicles
first sold in Canada.
Your vehicle has a light sensor located on the top
of the instrument panel in the defroster grille
that regulates when the automatic headlamps turn
on. Be sure it is not covered, or the headlamps
will come on whenever the ignition is on.
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Summary of Contents for 2007 Sierra 1500 Pickup
Page 6: ...These are some examples of symbols that may be found on the vehicle 6...
Page 24: ...Put someone on it Get it up to speed Then stop the vehicle The rider does not stop 24...
Page 206: ...NOTES 206...
Page 209: ...NOTES 209...
Page 354: ...NOTES 354...
Page 464: ...NOTES 464...
Page 484: ...When you open the hood on the 8 1L V8 engine here is what you will see 484...
Page 604: ...604...
Page 612: ...NOTES 612...
Page 633: ...Engine Drive Belt Routing A Air Conditioning Compressor V6 Engines V8 Engines 633...