# 2011 Buick LaCrosse - Exhaust noise

**URL:** <https://community.cartalk.com/t/2011-buick-lacrosse-exhaust-noise/174958>\
**Category:** Maintenance/Repairs\
**Tags:** buick\
**Created:** [February 13, 2021, 5:56pm UTC](https://community.cartalk.com/t/2011-buick-lacrosse-exhaust-noise/174958 "2021-02-13T17:56:16Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![DH14](https://avatars.discourse-cdn.com/v4/letter/d/f17d59/32.png) [@DH14](https://community.cartalk.com/u/DH14)\
**Post date:** [February 13, 2021, 5:56pm UTC](https://community.cartalk.com/t/2011-buick-lacrosse-exhaust-noise/174958/1 "2021-02-13T17:56:16Z")

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Exhaust sounds loud under hood

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**Author:** ![davepsinbox\_157004](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@davepsinbox\_157004](https://community.cartalk.com/u/davepsinbox_157004)\
**Post date:** [February 13, 2021, 11:57pm UTC](https://community.cartalk.com/t/2011-buick-lacrosse-exhaust-noise/174958/2 "2021-02-13T23:57:13Z")

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Is this a new issue or perhaps a new-to-you vehicle? If not, have a shop look at it. It’s possible you have an exhaust leak. It’s also possible the engine is just idling faster–and making more noise–due to colder weather.

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [February 15, 2021, 7:24pm UTC](https://community.cartalk.com/t/2011-buick-lacrosse-exhaust-noise/174958/3 "2021-02-15T19:24:22Z")

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Also possible someone stole your catalytic convertor.