# A/c switch **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** pontiac, grandprix\ **Created:** [August 8, 2013, 5:38am UTC](https://community.cartalk.com/t/a-c-switch/80786 "2013-08-08T05:38:05Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Stoveguyy](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@Stoveguyy](https://community.cartalk.com/u/Stoveguyy)\ **Post date:** [August 8, 2013, 5:38am UTC](https://community.cartalk.com/t/a-c-switch/80786/1 "2013-08-08T05:38:05Z")
99 grand prix. controls are manual version, not automatic climate control. a/c works fine but compressor is engaged whether a/c button is pushed on or off. the only way i can disable a/c is too set fan speed to OFF. does not matter if control is set to vent, or feet. a/c runs with a/c switch set to on or off. this is not an issue of selector set to dash or defrost. i assume it is not a clutch gap issue since the compressor shuts off if i turn fan control to OFF. ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [August 9, 2013, 5:00am UTC](https://community.cartalk.com/t/a-c-switch/80786/2 "2013-08-09T05:00:02Z")
Possibly the switch is shorted internally.