Lo Beams not working

[09tahoehybrid]

Hi guys, looking for some input on an issue I just started having with the Tahoe.

Both low beam headlights quit working today... they don't work with the light selector switch in auto or low beam mode. The DRLs and high beams come on fine.

Interestingly, when I turn the light selector switch to high beam, the low beam bulbs light up fine along with the high beams... so the bulbs are fine.

Anyone have any ideas on a fix for this?

 

[09tahoehybrid]

So I tried changing the relay labeled "HDLP LO/HID"...no change, and checked both 20amp low beam fuses (#11 & 16)... they're both fine

any ideas?

 

[kskcheche]

Are you checking for 12v at the light plug? Also check for 12v at the switch.