# Headlights dimming

**URL:** <https://community.cartalk.com/t/headlights-dimming/36413>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, tahoe, electrical-wiring\
**Created:** [September 10, 2009, 5:59pm UTC](https://community.cartalk.com/t/headlights-dimming/36413 "2009-09-10T17:59:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dtwinpop57](https://avatars.discourse-cdn.com/v4/letter/d/82dd89/32.png) [@dtwinpop57](https://community.cartalk.com/u/dtwinpop57)\
**Post date:** [September 10, 2009, 5:59pm UTC](https://community.cartalk.com/t/headlights-dimming/36413/1 "2009-09-10T17:59:28Z")

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I have a 200 Chevy Tahoe with fairly low mileage (52,000). Recently, I’ve noticed that the headlights dim for a brief moment when I use the turn signal or the electric windows. Any idea what might be causing this?

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**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [September 10, 2009, 6:17pm UTC](https://community.cartalk.com/t/headlights-dimming/36413/2 "2009-09-10T18:17:56Z")

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Weak battery and/or weak charging system.

Most parts places will test them both for free.

Of course, in a vehicle manufactured in 200 A.D. one can expect to replace an occasional part…

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**Author:** ![bennyandthejets](https://avatars.discourse-cdn.com/v4/letter/b/b487fb/32.png) [@bennyandthejets](https://community.cartalk.com/u/bennyandthejets)\
**Post date:** [September 10, 2009, 6:33pm UTC](https://community.cartalk.com/t/headlights-dimming/36413/3 "2009-09-10T18:33:03Z")

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Wow, TSMB is right! I didn’t realize they build Tahoe’s back then. I bet it’s pretty hard to get parts for something that old.