I have a 2011 Chevy Traverse and yesterday I start the car and both headlights are out. Parking lights, high beams, and everything else seems to be fine, just the headlights are out. It has auto light activation so I tried turning that on and off a bunch of times, as well as manual on, and nothing made a difference.

I’ve owned the car for a long time without replacing the headlights, so not surprised if a headlight goes out, but both at the same time?

I immediately think it’s a fuse but that’s when things get weirder. There’s a separate fuse for both right and left, as well as low and high beam, for a total of 4 fuses. And then there are two bigger, block-style fuses that are labeled simply “low” and “high” beam. So a total of six fuses to control the low and high beam lights.

And the weird part is the left and right low beam fuses were different numbers, 10 and 15. Certainly this is a mistake?

I pulled and looked at those two fuses and they seemed fine, but I didn’t test with a volt meter yet. The bigger block fuse I’m not sure how to test.

But before I tested anything I wanted to figure out what is going on. So here are my questions:

• Is it possible the headlights really did just blow out at the same time?

• Why are there three total fuses to control the low beams? Do they work together somehow?

• Why do left and right low beams have different fuse amp values?

• And more generally, how do you know what is the correct fuse value? The number doesn’t seem to be in the owner manual.

• Is there a way to test the larger block-style fuse with a volt meter?

I can provide pics of the manual, fuse box, or fuses as needed. Thanks so much for the help!