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Location 2004 egr valve on chey colardo - 2004 Chevrolet Colorado

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Doesn't have one , not needed with Camshaft Actuator System
The camshaft position (CMP) actuator system is used for a variety of engine performance enhancements. These enhancements include lower emission output through exhaust gas recirculation (EGR) control, a wider engine torque range, improved gas millage, and improved engine idle stability. The CMP actuator system accomplishes this by controlling the amount of intake and exhaust valve overlap.
The camshaft position (CMP) actuator system is controlled by the powertrain control module (PCM). The PCM sends a pulse width modulated 12-volt signal to a CMP actuator solenoid in order to control the amount of engine oil flow to a Cam Phaser passage. There are 2 different passages for oil to flow through, a passage for cam advance and a passage for cam retard. The Cam Phaser is attached to a camshaft and is hydraulically operated in order to change the angle of the camshaft relative to crankshaft position (CKP). Engine oil pressure (EOP), viscosity, temperature and engine oil level can have an adverse affect on Cam Phaser performance. The PCM calculates the optimum cam position through the following inputs:

Posted on Jul 24, 2016


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Posted on Jan 02, 2017

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SOURCE: bad egr valve

the egr valve is located at the end of an exhaust supply pipe (1/2" diameter) from the exhaust manifold. there is also a sticker under the hood that shows this location, it is the emissions sticker.

Posted on Mar 23, 2009

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SOURCE: avalanche 2007 where is the egr valve location

Rear right hand side of engine compartment

Posted on Aug 20, 2012

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Welcome to Fixya

The EGR valve is located at the right rear corner of the intake manifold near the firewall you will have to remove the throttle body cover to access it. Thank you for using Fixya!

If you need further help, reach me via phone at

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Bad egr valve

the egr valve is located at the end of an exhaust supply pipe (1/2" diameter) from the exhaust manifold. there is also a sticker under the hood that shows this location, it is the emissions sticker.

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