Turn your headlamp switch counter-clockwise from off until it clicks, then comes back to off position. This turns the DRL on and off. Remember, you won't see them come on unless the car is in gear. You can check this at a stop light with the reflection from the back of the car stopped in front of you.
Under dash - right side of steering column - attached to crossbar
Yes
A 2004 Chevy suburban should still be under warranty,unless you have custom lights, you can take it to the dealership and have fixed for free.
No.
headlights
NO , Not from the factory.
Yes
The daytime running lights are connected to the bright lights. It just reduces the power for the daytime runners.
www.fixitnow.com
They are daytime running lights. They are always on so people can always see you. Its a safety thing. Newer trucks have specific daytime running lights.
yes
DRL = daytime running lights