Headlights not working - low beams?

Did you check for voltage anywhere? Did you check for voltage at the fuse circuit? Neither high or low beam will work? Our database info says bcm controls ground side of headlamp relays, so check for applicable trouble codes. There are headlamp control codes. I believe those are B type codes. Some of the national brand autostores will check codes for free. Let us know.

You are probably correct that the terminal is the issue. You will need to either de-pin the connector and tighten the terminal or you will need to replace the connector if it is loose and allowing the terminal to move around.

We don't have any videos on how to tighten a terminal but there are a ton of DIY videos on the internet that will give you the idea on what needs to be done.

The other solution is to replace the fuse box. I attached the instructions below on how to do this for the fuse box with the park relay. Let me know what questions you have.

Have you checked to see if you have power to both sides of the low beam fuse?

The headlights go from the headlight switch to the dimmer switch then to the bulbs. The switch is on the l/side lower steering column when u dim the lights u will see the linkage rod will move as you move the dimmer lever. Check the voltage their.

Hi,

If the fuse in pic 1 is good, then I suspect it is a ground issue. If you look at pics 2 and 3, you will see "S107" and then "G107". The S means there are several wires spliced together. Since the high beam still works, the the ground (G107) is likely still good and the ground wire to the high beam is still attached. However, both the low beam and the signal light for the driver's side splice together with the same ground. I suspect that is where the problem is located.

Here is a simple test I need you to do: Note that the ground wire for both lights is black in color. Simply run a jumper wire from the black wire to the battery ground and see if the light works. If it does, then we know the splice is likely the issue. You don't have to run it all the way to the battery, but you need to provide a known good ground location on the vehicle to confirm.

Let me know if you have other questions and what you find.

Take care,
Joe