yes they are supposed to be on, it is the daytime running lights
Your headlights are your DRLs
When it is raining during the day you should always keep your headlights on.
Headlights are required in periods of darkness and during a rain storm.
It should have. Truck has to be running, in drive during daylight hours for the DRL to be on. Kinda hard to check if you are the driver. Have someone outside the truck watch to see of they are working or not. If they don't work there is a good chance the bulbs are burned out.
your headlights will burn out faster and could possibly blow a fuse, but you would go through headlights and a drastically increased rate if you use headlights when they are unneeded.
This information is in the owner's manual. If you don't have one, you can download it from http://gmownercenter.yahoo.com. Push the dome override button three times (in, out, back in). You'll hear the familiar "ding" and the parking, headlights, and taillights will go out. You can then control them using the parking / headlight switch. You can also idle the truck with the lights off by starting it with the parking brake applied. You can also use the switch to turn on the headlights during the day (rain, etc.). Here's a photo of the location of the button under the headlight switch: http://monsterautoparts.com/chevrolet/chevy%20truck/_images_chevy_truck/D1534G.jpg
You contradict yourself. If your headlights are staying on during the day, then your DRL are working. What is your problem?
Headlights are used during times in which it may be hard to see. In most states, headlights must be used when driving from dusk before sunset to sunrise.
Due to law changes headlights technically are allowed on at all times even during the day and MUST be on in the evening when it starts to get dark
where are the coaches supposed to be when their team is on defense during a baseball game
no, using your headlights during the day, just uses power from the battery, and not from the engine, the battery is constantly being recharged , while the engine is running, any way,
Driving with headlights on during the day reduces your chance of collision by about 25% because other drivers can see you from at least 1/2 mile ahead.