P0008 engine code

Tiny
TWADE23
  • MEMBER
  • 2010 GMC ACADIA
  • 3.7L
  • V6
  • 2WD
  • AUTOMATIC
  • 165,000 MILES
I have been getting the P0008 code on and off. The engine still runs fine. Is this going to be the timing chain or a sensor?
Tuesday, October 29th, 2019 AT 1:27 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,388 POSTS
Welcome to 2CarPros.

A single failed camshaft actuator or actuator solenoid will not cause this DTC to set. Are there any other codes stored in addition to this? If not, there is a good chance the secondary timing chain has stretched and is allowing a slight misalignment for the camshafts on one side of the engine.

If you have the code cleared, does it come right back?

Let me know.

Joe
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Tuesday, October 29th, 2019 AT 7:58 PM
Tiny
TWADE23
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No other codes are getting set and I can erase it and it comes back shortly after that.
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Wednesday, October 30th, 2019 AT 9:43 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,388 POSTS
Welcome back:

Well, at this point, I would replace the sensors and pray that takes care of the issue. If it doesn't, chances are we will need to check the timing chain.

That is where I question how this is sensor related. The code just indicates bank one. There is a sensor for both the intake and exhaust cam. When there is one sensor which is bad, the code is usually different and indicates which sensor is the cause. With this code, it is more likely that both intake and exhaust are equally off indicating a chain issue.

Anyway, those are my thoughts at this point. Let me know which direction you want to go so I can help you. I wish I could give you a more definitive answer.

Take care,
Joe
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Wednesday, October 30th, 2019 AT 6:07 PM

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