P3425 & P0442 error codes

mjreynolds928 · Apr 4, 2020

wjburken said:
I don’t think the 2007 5.3L’s had VVT, just the 6.2L’s, but I could be mistaken.

I think you're right... The picture I dropped in this thread, my timing cover looks the one on the right, the picture had text at the bottom of the image that I didnt really pay attention too, "These are two LS engine timing covers. The one on the left has the camshaft phasing actuator, indicating that it is from an engine with VVT. The one one the right has no actuator, so it is from an engine without VVT. (Image/Summit Racing)."
I guess it this puts me back to square one. Any other ideas?

mjreynolds928 · Apr 4, 2020

wjburken said:
I don’t think the 2007 5.3L’s had VVT, just the 6.2L’s, but I could be mistaken.

Do you think it could be the cylinder deactivation solenoid?

wjburken · Apr 4, 2020

mjreynolds928 said:
Do you think it could be the cylinder deactivation solenoid?

Yes.

Doubeleive · Apr 4, 2020

I guess that's what I meant, I get vvt and cylinder deactivation confused

mjreynolds928 · Apr 4, 2020

wjburken said:
Yes.

Hello @wjburken, I had chevy run new fuel lines a few months back. Shortly after I was getting P0442 code. When I started to take parts off the top of the engine to replace the cylinder deactivation manifold, then I saw this connector (black line with green cap) was not actually snapped back in! Would this have caused long starts and cause this code?

wjburken · Apr 4, 2020

mjreynolds928 said:
Hello @wjburken, I had chevy run new fuel lines a few months back. Shortly after I was getting P0442 code. When I started to take parts off the top of the engine to replace the cylinder deactivation manifold, then I saw this connector (black line with green cap) was not actually snapped back in! Would this have caused long starts and cause this code?
View attachment 243921

It could contribute to those symptoms, yes.

mjreynolds928 · Apr 5, 2020

So I got the airbox manifold (wherever its called) removed. Then I found out what the REAL problem is.... We have deer corn in our side lot and apparently a mouse has been housing between the manifold and airbox eating its corn. And it chewed through one wire on the wiring harness to connect to the deactivation manifold. Very frustrating, but I am still replacing the deactivation manifold.

Another strange thing is that all but three bolts to hold down this cyl. deactivation manifold was only hand tight.

Big Mama · Apr 5, 2020

I wonder how many miles you’ve had a passenger? Crazy.

wjburken · Apr 5, 2020

mjreynolds928 said:
So I got the airbox manifold (wherever its called) removed. Then I found out what the REAL problem is.... We have deer corn in our side lot and apparently a mouse has been housing between the manifold and airbox eating its corn. And it chewed through one wire on the wiring harness to connect to the deactivation manifold. Very frustrating, but I am still replacing the deactivation manifold.

Another strange thing is that all but three bolts to hold down this cyl. deactivation manifold was only hand tight.

View attachment 243964 View attachment 243965

Wow! That could certainly be the cause of your P3245 issue. My concern is whether or not any permanent damage has been done to the lifter if the AFM solenoid wasn’t firing properly.

Doubeleive · Apr 5, 2020

time for some outside tom cats and I would spray the engine compartment and undercarriage with something that mice do not like and I would buy a pack of mouse traps and put them outside random with peanut butter on them in the meantime.

P3425 & P0442 error codes

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