2007 Suburban Tail Light Diagram

[candlscales]

Does anyone have a wiring diagram for the taillights in a 2007 Suburban? My left side taillights will not come on when my headlights are on. The blinker works and the brake light works but no taillight with headlights on. Any ideas?

 

[G-621165]

same issue any luck finding what it could be?

 

[zora]

Did you check the bulb that both filaments are good?