Intake manifold runner control actuator

[Roger Peebles]

Where is it and how do I get to it? There are 2 apparently. I’m getting p2009. 
 

Some diagram or detailed explanation would help.

 

thanks

[newdude]

3 hours ago, Roger Peebles said:

Where is it and how do I get to it? There are 2 apparently. I’m getting p2009. 
 

Some diagram or detailed explanation would help.

 

thanks

 

 

Year?  Make?  Model?  What engine?  

 

I don't see P2009 in diagnosis for this generation truck, and I'm 99% sure they don't have any sort of intake runner control on them.  

Edited October 12, 2025 by newdude

[Roger Peebles]

2014 5.3 Silverado it’s throwing p2009 code

[newdude]

1 hour ago, Roger Peebles said:

2014 5.3 Silverado it’s throwing p2009 code

 

 

I think you might need a different code reader?  Don't think its reading the code right.

 

P2009 doesn't exist in the service manual for 2014-2019 5.3, nor for the 4.3 and 6.2.  They don't use any sort of intake tuning valves in these engines.  

 

There's a P2099 Post Catalyst Fuel Trim System High Limit Bank 2 that shows up, but P2009 doesn't apply to these engines.  

[Roger Peebles]

My mistake sorry it’s a p2099. Many thanks for setting me straight! The code appears intermittently maybe once or twice a month. I’m just clearing it for now. 

[CamGTP]

Tough to say if it's the o2 sensor that is the problem or if the cat converter is the problem. Being that it's only happening maybe once or twice a month makes it really hard to pinpoint the problem.

 

If anything here, if your o2 sensors are original to the truck and you have well over 100k on them. It is not a bad idea to buy all new sensors and swap them out. If you plan the keep the truck a long time, I would be buying new Denso or Delco sensors and doing that before jumping to a cat converter replacement.

[Roger Peebles]

I have 185k miles. Is sensor replace a diy or mechanic fix? I’m pretty handy with working on my truck. 

[newdude]

On 10/12/2025 at 8:14 AM, Roger Peebles said:

My mistake sorry it’s a p2099. Many thanks for setting me straight! The code appears intermittently maybe once or twice a month. I’m just clearing it for now. 

 

 

All good!

 

 P2099 - Post Catalyst Fuel Trim System High Limit Bank 2

 

I'd say could be a couple things.  Bad oxygen sensor or sensors on bank 2.  Or, if any of them have been replaced, if they are aftermarket, get original equipment ones.  Either way, make sure they are the GM ones in the GM box and not a Denso "OE" sensor.  GM stuff is VERY sensitive to non OE parts.

 

Other option, and a very probable one is leaking fuel injector(s).  Rather common failure point on these trucks.  They will either get clogged and carbon'd up or they'll start to fail internally and not close properly and dump excess fuel.  

 

Also, check for any exhaust leaks, particularly the exhaust manifolds.  Look for any broken bolts too.  

 

Edited October 13, 2025 by newdude

[Roger Peebles]

Thank you! Lots to think about will check as best I can!