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Engine knock, codes P0011, P0014 and P0021?

Tiny
GMCACADIAGUY
  • MEMBER
  • 2013 GMC ACADIA
  • 3.6L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
My Acadia has been sitting for around 5 months. I just put a starter and alternator on it and now there’s a knock from the engine but no check engine light. I hooked a scanner to it. It’s giving p0011, p0014, and p0021 codes.
Tuesday, July 25th, 2023 AT 9:28 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,874 POSTS
Hi,

All three codes are related to the camshaft position solenoid actuators. This could be from sitting, but I feel that is unlikely.

Is the engine oil clean and full? Have you checked if any mice chewed on wiring on the engine?

If you look below, I attached the description and diagnostics for the codes. Take a look through them and let me know if you are comfortable performing them. Also, at this point, I don't think it is timing related as far as a timing chain because you have one of the four sensors not setting a code.

Let me know what you find or if you have other questions.

Take care,

joe

See pics below.
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Tuesday, July 25th, 2023 AT 9:54 PM
Tiny
GMCACADIAGUY
  • MEMBER
  • 2 POSTS
My oil is reading full, but I changed the oil during the months the truck was sitting and not operable.
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Monday, July 31st, 2023 AT 5:58 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,874 POSTS
Hi,

The timing of the oil change is fine. That wouldn't cause any issues. Are you comfortable performing the diagnostics I listed above?

Let me know.

Joe
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Monday, July 31st, 2023 AT 8:56 PM

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