2006 Trailblazer Low Beam Headlights Will Not Work, But High Beams Do! Ill check the left and right low beam fuses they were good. Can anyone help me with any solution. Thanks...

Check/replace the combination light switch.

2006 Trailblazer Low Beam Headlights Will Not Work, But High Beams Do! Ill check the left and right low beam fuses they were good. Can anyone help me with any solution. Thanks...

You need to check power out at the plugs on the lights. See if there is a good ground or not at the plug.

Let us know what you find.

https://www.askmehelpdesk.com/cars-trucks/no-posting-your-question-more-than-once-482057.html

What did you find as the cause of the problem? I'm having the same issue. Thanks.

Do you have only High, and it won't switch, or do you have a High and nothing?

I figured out the problem. All 3 fuses were good for the low beams but the relay was bad. All 4 are under the hood in the fuse box... easy fix. 10 minutes, a test light, owners manual, and $35 for a relay.