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GMC Envoy XL SLE: 2004 GMC Envoy 6 cyl. check engine light

 

Customer Question

2004 GMC Envoy 6 cyl. check engine light on trouble code Poo16 cam crank sensors have been replaced 2 mechanics and 1 GMC dealer have not been able to solve problem. Last guy said something about a screen behind the valve cover being clogged? Light has been on for a year and the car runs fine but now I want to sell it so I need to solve this problem, any suggestions?

 

Country: United States
Make: GMC
Model: Envoy XL SLE
Year: 2004
Engine: 6

Already Tried:
new cam and crank position sensors castroil engine flush

Submitted: 357 days and 15 hours ago.
Category: GMC
Value: $15
Status: CLOSED

Accepted Answer

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Expert:  Dave Nova replied357 days and 15 hours ago.

Hello and thank you for trusting me with your question. My name is XXXXX XXXXX X will do my best to help you with your GMC problem.

The screen the one mechanic is referring to is on the camshaft actuator solenoid. This solenoid is on the passenger side of the cylinder head. It would be worthwhile to replace this solenoid in an attempt to repair the problem. If replacing the solenoid does not fix the problem then the cam sprocket will need to be replaced. The cam sprocket contains the actuator that varies the cam timing.

1. Remove the drive belt.
2. Remove the 3 power steering pump bolts and move the pump out of the way.
3. Disconnect the camshaft position actuator solenoid electrical connector.
4. Remove bolt securing solenoid, remove solenoid.

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Thank you,
David

Expert TypeGMC Technician
Category: GMC
Pos. Feedback: 98.3 %
Accepts: 805
Answered: 6/27/2012

Experience: ASE Master Certification. GM World Class Certification

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Customer replied357 days and 15 hours ago.

this part has been replaced twice first one leaked, mechanic put another

in no charge.

 
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