DRL not working

[John 2003]

Any suggestions on my 2003 Yukon? Already tried swapping the relay and still nothing

 

[franksbanks]

Any suggestions on my 2003 Yukon? Already tried swapping the relay and still nothing

I would of started with this:

1. fuses (under hood)
2. relay(s)
3. bulbs
if problem persists:
4. get a 12 volt test lamp or a voltage meter and perform a test on the bulb sides

hope that helps