# 2005 Cadillac ATS knocking sound at stop

**URL:** <https://community.cartalk.com/t/2005-cadillac-ats-knocking-sound-at-stop/162901>\
**Category:** Maintenance/Repairs\
**Tags:** ats, cadillac\
**Created:** [April 15, 2020, 8:02pm UTC](https://community.cartalk.com/t/2005-cadillac-ats-knocking-sound-at-stop/162901 "2020-04-15T20:02:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Dray24](https://avatars.discourse-cdn.com/v4/letter/d/7ea924/32.png) [@Dray24](https://community.cartalk.com/u/Dray24)\
**Post date:** [April 15, 2020, 8:02pm UTC](https://community.cartalk.com/t/2005-cadillac-ats-knocking-sound-at-stop/162901/1 "2020-04-15T20:02:27Z")

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When stopped at red light or stop signs it sounds like a knocking but no light come on

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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:** [April 15, 2020, 11:10pm UTC](https://community.cartalk.com/t/2005-cadillac-ats-knocking-sound-at-stop/162901/2 "2020-04-15T23:10:00Z")

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Low oil is a distinct possibility. When was the last time you checked it?