# Engine Noise

**URL:** <https://community.cartalk.com/t/engine-noise/34047>\
**Category:** Maintenance/Repairs\
**Tags:** sonoma, gmc\
**Created:** [July 26, 2009, 7:32pm UTC](https://community.cartalk.com/t/engine-noise/34047 "2009-07-26T19:32:48Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hemllm](https://avatars.discourse-cdn.com/v4/letter/h/c89c15/32.png) [@hemllm](https://community.cartalk.com/u/hemllm)\
**Post date:** [July 26, 2009, 7:32pm UTC](https://community.cartalk.com/t/engine-noise/34047/1 "2009-07-26T19:32:48Z")

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I have a high pitch noise coming from the engine of my pickup. The pitch rises and falls with the speed of the engine.

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [July 26, 2009, 8:00pm UTC](https://community.cartalk.com/t/engine-noise/34047/2 "2009-07-26T20:00:02Z")

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I would look for a bad bearing on something on the serpentine belt. (Alt, AC, PS pump etc.