I found out it was just a fuse under the hood that I didn't check #26 (Driver Side Park Lamps) also the (passenger side park lamps) in your case is #27 if you haven't checked those under the hood that could be it!!
I found out it was just a fuse under the hood that I didn't check #26 (Driver Side Park Lamps) also the (passenger side park lamps) in your case is #27 if you haven't checked those under the hood that could be it!!
I have a 2008 gmc sierra 1500 and I am the second owner. I just bought the truck and recently noticed that the driver side DRL light won't come on, but the passenger side does. Like you said about them flashing when you lock/unlock the doors, mine does the same, they flash but but when I turn the one won't stay on? I am totally confused about what is happening. I have been through it a million times and will take it in, maybe someone else can figure out what I can't!