[Karla72689]

I think my daytime running light is out on the drivers side of my 2013 Malibu LT. Which bulb is my (nighttime) headlight and which is the DRL??

 

[SilverSport]

I believe your daytime running light IS your (low beam) headlight and your model should have halogen headlights...many GM cars just use the headlight bulb as the DRL but sometimes at slightly less power than if you turned your headlights on...

the LTZ models had HID (high intensity discharge) headlights and used a different bulb for DRLs...

Good luck with your car

Bill