# Chevy Celebrity- heat blows through dashboard vents only

**URL:** <https://community.cartalk.com/t/chevy-celebrity-heat-blows-through-dashboard-vents-only/71398>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet\
**Created:** [March 12, 2012, 3:44pm UTC](https://community.cartalk.com/t/chevy-celebrity-heat-blows-through-dashboard-vents-only/71398 "2012-03-12T15:44:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ramblinman](https://avatars.discourse-cdn.com/v4/letter/r/ce7236/32.png) [@ramblinman](https://community.cartalk.com/u/ramblinman)\
**Post date:** [March 12, 2012, 3:44pm UTC](https://community.cartalk.com/t/chevy-celebrity-heat-blows-through-dashboard-vents-only/71398/1 "2012-03-12T15:44:09Z")

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Hello- I have a 1990 Chevy Celebrity wagon with a vent problem. The air will only blow out the dashboard vents, so I’m getting no heat down below, or air to the defroster. Does anybody know how to fix this?

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**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\
**Post date:** [March 12, 2012, 4:38pm UTC](https://community.cartalk.com/t/chevy-celebrity-heat-blows-through-dashboard-vents-only/71398/2 "2012-03-12T16:38:08Z")

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You’d have to check to be sure but the vent controls are probably done by vacuum lines. On the back of the switch is probably a bundle of vacuum lines, and the vacuum supply will originate someplace under the hood & pass through the firewall. You may have a supply line problem or a problem with the feeds off the back the back of the switch. I’d start by just checking around the firewall under the hood for a broken/disconnected line.

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**Author:** ![ramblinman](https://avatars.discourse-cdn.com/v4/letter/r/ce7236/32.png) [@ramblinman](https://community.cartalk.com/u/ramblinman)\
**Post date:** [March 12, 2012, 7:38pm UTC](https://community.cartalk.com/t/chevy-celebrity-heat-blows-through-dashboard-vents-only/71398/3 "2012-03-12T19:38:13Z")

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Thanks cigroller- I saw some small diameter clear plastic lines under the dash last year, but none of these seemed to be disconnected. I wonder if they operate the vent controls. I wouldn’t know how to access anything immediately behind the switch panel.