Does the 2010 Cobalt LT Have Daytime Running Lights? - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 25 (permalink) Old 09-20-2012, 11:35 PM Thread Starter
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Question Does the 2010 Cobalt LT Have Daytime Running Lights?

I could have sworn my car had DRLs when I bought it, but now if it's running and I get out and look they are not lit. Do you have to have it in drive?

I think I will start just using my parking lights when I drive. The only downside I suppose is it can drain the battery if I accidentally leave them on. Did these cars come with battery rundown protection, even on exterior lighting? I think it's got it for at least the interior lights.

Some real GM mechanics/owners, I need a little help. Thanks.

James

2010 Cobalt LT Coupe, 2.2 LAP, Auto, bright white, 13k miles, no mods except removal of side trim strips....coming soon: window tint, full front end bra, new alloys, possibly a spoiler, upgraded headlights, and would like to lower it about 2 inches.
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post #2 of 25 (permalink) Old 09-21-2012, 04:04 AM
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Quote:
Originally Posted by 2010baltcoupe View Post
I could have sworn my car had DRLs when I bought it, but now if it's running and I get out and look they are not lit. Do you have to have it in drive?
Yes your car should have "DRL"s. They only come on in drive and during the day but you can't pull the emergency brake to check, since this disabled the "DRL".

During day time block your wheels, turn ignition to on without starting engine, then put car in drive and go check if your "DRLs" are on. If not check fuse. If fuse is good report back and I'll redirect you to a thread that deals with possible problems.

https://www.yourcobalt.com/forums/pro...ot-coming.html
https://www.yourcobalt.com/forums/pro...ire-fried.html
https://www.yourcobalt.com/forums/pro...eadlights.html

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Last edited by Coby7; 09-21-2012 at 05:15 AM.
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post #3 of 25 (permalink) Old 09-21-2012, 05:09 AM
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The 2010 does have them. They are only on when the car is running and in gear.
If it is a auto the parking brake will not turn them off.
Put your car in neutral with with the car running and the parking brake on.
You should see them then.

If you don't check the DRL fuse in the fuse block under the hood. If that's good it might be the wiring for the DRL's that's bad.
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post #4 of 25 (permalink) Old 09-21-2012, 05:18 AM
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Are you saying the 2010 is different than the 2007 with auto? When I pull the parking brake it turns "OFF" my "DRL"s and they are not on in park.

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post #5 of 25 (permalink) Old 09-21-2012, 05:21 AM
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Quote:
Originally Posted by bbrewbaker View Post
The 2010 does have them. They are only on when the car is running and in gear.
If it is a auto the parking brake will not turn them off.
Put your car in neutral with with the car running and the parking brake on.
You should see them then.

If you don't check the DRL fuse in the fuse block under the hood. If that's good it might be the wiring for the DRL's that's bad.
i agree, i have the 2010 auto and mine stay on even when im in nuetral with the parking brake on.
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post #6 of 25 (permalink) Old 09-21-2012, 05:25 AM
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I have a 2010 auto but I never really checked them. Maybe I'll get out there today and take a look. You guys are always creating work for me.


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post #7 of 25 (permalink) Old 09-21-2012, 05:29 AM
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i usually dont check them either, but i took a road trip to florida last year so i figured i might as well go through the whole pre-road trip checks for everything and noticed they were on.
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post #8 of 25 (permalink) Old 09-21-2012, 06:04 AM
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Quote:
Originally Posted by Coby7 View Post
Are you saying the 2010 is different than the 2007 with auto? When I pull the parking brake it turns "OFF" my "DRL"s and they are not on in neutral. Drive only.
I've heard also that US ones are different. Not sure why. Some say that for Canada they come on when the car is started.
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post #9 of 25 (permalink) Old 09-21-2012, 07:51 AM
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This is out of the 2010 service manual, and I checked the schematic it is the exact same as 2007.

Daytime Running Lamps (DRL)
The ambient light sensor is a light sensitive transistor that varies its voltage signal to the body control module (BCM) in response to changes to the outside (ambient) light level. When the BCM receives this signal, it will either turn ON the daytime running lamps (DRL) or the headlights if the headlamp switch is in the AUTO position. Any function or condition that turns ON the headlights will cancel the DRL operation. With the headlight switch in the AUTO position, the headlights will either be turned ON or OFF, after an approximate 30-second delay depending on whether daylight or low light conditions are sensed. The DRL illuminates the park/turn signal and DRL lamps. The DRL will operate when the ignition switch is in the ON position, the gear selector is not in the PARK position, and the parking brake is released. When these conditions have been met and the ambient light sensor indicates daytime conditions, the DRL will illuminate.

DRL operation in manual transmission equipped vehicles will occur when the ignition switch is in the ON position, and the parking brake is released.

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post #10 of 25 (permalink) Old 09-21-2012, 08:04 AM
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DRL's suck.


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