# Defogger not working

**URL:** <https://community.cartalk.com/t/defogger-not-working/27390>\
**Category:** Maintenance/Repairs\
**Created:** [March 7, 2009, 5:10am UTC](https://community.cartalk.com/t/defogger-not-working/27390 "2009-03-07T05:10:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![juntayo](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@juntayo](https://community.cartalk.com/u/juntayo)\
**Post date:** [March 7, 2009, 5:10am UTC](https://community.cartalk.com/t/defogger-not-working/27390/1 "2009-03-07T05:10:14Z")

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my gmc truck defogger is not working, Pls any help

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**Author:** ![pleasedodgevan2](https://avatars.discourse-cdn.com/v4/letter/p/ad7895/32.png) [@pleasedodgevan2](https://community.cartalk.com/u/pleasedodgevan2)\
**Post date:** [March 7, 2009, 6:30am UTC](https://community.cartalk.com/t/defogger-not-working/27390/2 "2009-03-07T06:30:24Z")

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We help those who help themselves. Describe the problem. We cant even tell if the fan motor runs or the heat works or if you just have fogged windows and have to set the vent system for outside air instead of recycled.

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**Author:** ![UncleTurbo](https://avatars.discourse-cdn.com/v4/letter/u/e9a140/32.png) [@UncleTurbo](https://community.cartalk.com/u/UncleTurbo)\
**Post date:** [March 7, 2009, 12:32pm UTC](https://community.cartalk.com/t/defogger-not-working/27390/3 "2009-03-07T12:32:55Z")

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Are you talking about the rear window defogger, or windshield?