# Exhaust cam actuator

**URL:** <https://community.cartalk.com/t/exhaust-cam-actuator/57128>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, trailblazer\
**Created:** [November 3, 2010, 1:17am UTC](https://community.cartalk.com/t/exhaust-cam-actuator/57128 "2010-11-03T01:17:20Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ewatson](https://avatars.discourse-cdn.com/v4/letter/e/c6cbf5/32.png) [@ewatson](https://community.cartalk.com/u/ewatson)\
**Post date:** [November 3, 2010, 1:17am UTC](https://community.cartalk.com/t/exhaust-cam-actuator/57128/1 "2010-11-03T01:17:20Z")

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what is exhaust cam actuator? when should it be replaced?

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**Author:** ![Wha-Who](https://avatars.discourse-cdn.com/v4/letter/w/9f8e36/32.png) [@Wha-Who](https://community.cartalk.com/u/Wha-Who)\
**Post date:** [November 3, 2010, 2:53am UTC](https://community.cartalk.com/t/exhaust-cam-actuator/57128/2 "2010-11-03T02:53:59Z")

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Never heard of such a part. Sounds like a muffler belt or turn signal fluid to me.

If you have a DOHC engine, it could be the exhaust valve camshaft which normally does not need replacing, ever.

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**Author:** ![Carveaholic](https://avatars.discourse-cdn.com/v4/letter/c/f07891/32.png) [@Carveaholic](https://community.cartalk.com/u/Carveaholic)\
**Post date:** [November 3, 2010, 6:18am UTC](https://community.cartalk.com/t/exhaust-cam-actuator/57128/3 "2010-11-03T06:18:52Z")

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It does seem to exist. I was curious, beyond that I have no more info.

> **[Exhaust cam position actuator solenoid - Chevy TrailBlazer, TrailBlazer SS and...](http://forums.trailvoy.com/showthread.php?t=53131)**
>
> Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

> **[What is a camshaft actuator](http://www.answers.com/Q/What_is_a_camshaft_actuator)**
>
> The Camshaft position actuator solenoid controls the exhaust camshaft retard position. From 0 to 25 degrees.

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**Author:** ![TwinTurbo](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@TwinTurbo](https://community.cartalk.com/u/TwinTurbo)\
**Post date:** [November 3, 2010, 11:27am UTC](https://community.cartalk.com/t/exhaust-cam-actuator/57128/4 "2010-11-03T11:27:17Z")

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It’s hydraulically actuated by the engine oil so the condition of the oil affects it. If you’re using the factory oil life monitor to schedule oil changes (or you’ve been running an extended change interval of your own) and the ECA error code just popped up, try changing the oil first.