Brendan Cosworth

Fair enough, it is an assumption on an assumption as well so not the end of the world. Thanks for the info. I'll have to figure out a way to test it.

That could very well be it as well. If that happens to be it, what would be worst case that one day it wouldn't disengage? Shouldn't cause much more than starter failure I would imagine (which really isn't a huge deal in the scheme of things).

Awesome, so not going to throw a pushrod through the intake, that is all I care at this point. haha Good to know, yeah the first couple times it sounded violent but now it sounds like just a crap load of air being sucked in. Glad to know it isn't me and/or a sign of impending failure.

So had a chance to start it this morning. Luckily it doesnt sound like a metallic noise like I thought, it more sounds like a snuff noise. Almost like a valve cover breather. Kind of strange. Thoughts?

Well gauge was showing below the lowest line and it didn't do it. But it was parked on the street and I manually started it. I always remote start the truck when I am on my way out in the morning. So I'll try and manually start it tomorrow after sitting. I wonder if it is a lifter noise because the oil bleeds out of it?

So I have a weird one for you guys. Only when the truck is cold when I start it there is a very loud thunk noise, but only 1. It doesn't need to 'warm' up to go away. It literally goes away after 1 revolution (or close to). I've listened to probably 20 youtube videos of cold piston slap and it definitely doesn't sound like that. It almost sounds like a metal on metal thwack. Hard to explain. I'll have to get a video of it later today after the vehicle cools down. Doesn't do it in +5 degree temp and doesn't do it once the block is warmed. Like I said there is only 1 quick noise and that is it. Not sure what it is.

So spent a lot of time today (perhaps some of that on work time. lol) trying to figure this out. I spent 1.5 hours last night going through a E2 install on a 2010 Chevy Silverado. The information I got was either conflicting, didn't make sense to me, was for 2014+ or didn't work on my truck for one reason or another. After 12 emails to Elite Engineering today and some of my own homework I was finally able to install it. I've created a how to thread here: http://www.gm-trucks.com/forums/topic/180365-how-to-catch-can-on-l9h-62l-engine-pre-2014/