GMC Repair: Signal Light on passenger side not working, gmc yukon, electrical knowledge

Question
My 99 GMC Yukon signal light not working, nor does the brake light on the passenger side.  Replaced bulbs (all three) still nothing. I checked the fuses and none are blown.  What other options do I have at this point before taking it to a repair shop?

Answer
Hi
The only other part I could suggest is the bulb circuit board. the black board all the bulbs snap into.
Other than that, if you have a test light and some electrical knowledge, I'll be happy to let you know a few things to test.
Let me know, other than that I would recommend taking it in to yuor local repair shop.
Good lLuck
Pawl