Engine cover question

[Carlo]

Hi all,

I recently bought a 2007 Denali. Appears that the engine cover is missing... Rockauto has it and ships to The Netherlands.
When I look at the pictures of the part I see that there are three parts actually:
The main cover

A smaller one with the title 'rear'

And what looks like a mount ore something

My question is, do I need all three? I know where the main cover goes, the pins to attach it too are still there. But the other two I don't
know where they belong on the engine.
My engine looks like this:
Front

Hope to hear and to learn.
Thanks!

 

[Dustin Jackson]

@Carlo The part in the 3rd picture you already have, its bolted to the top of your engine and yes it holds the top cover. You can see the on the rear of the first picture the 2 notches, those line up with the 2 clips from the 3rd picture.

I can't remember ever seeing the part in the second picture.

Looking at the excellent pictures from this Ebay listing, I would say that you do not need the part in the 2nd picture: https://www.ebay.com/itm/2650816417...BnGqVQUWCcnO9fKy8CU4BdJA==|tkp:Bk9SR-znpYbHYg

 

[Doubeleive]

Hi all,

I recently bought a 2007 Denali. Appears that the engine cover is missing... Rockauto has it and ships to The Netherlands.
When I look at the pictures of the part I see that there are three parts actually:
The main cover
View attachment 407109
A smaller one with the title 'rear'
View attachment 407108
And what looks like a mount ore something
View attachment 407107
My question is, do I need all three? I know where the main cover goes, the pins to attach it too are still there. But the other two I don't
know where they belong on the engine.
My engine looks like this:
Front
View attachment 407110

View attachment 407111

Hope to hear and to learn.
Thanks!

can't tell from your photo, but if you look further under the engine top center where the 3 bolts are you should have a clip looking like the following, if so then you just need the beauty cover.

 

[B-train]

The second picture is a complete pain in the ass to install. I assume its part of heat management or sound deadending. I left it off mine when I did the valley oil o-rings. Just make it easy and order the top cover. It'll clip right in and look correct.

 

[Carlo]

Hi guys,
Thanks for your help.
I will order the top cover as I see the clip.
Really appreciate it!

 

[Tozan]

I took the top cover off mine 100k miles ago and tossed it in the trash... I am not sure why it even needs one...

 

[gooffeyguy]

That second Pic is of the piece at the back of the engine that makes it so difficult to change the oil pressure sensor

 

[Marky Dissod]

I took the top cover off mine 100k miles ago and tossed it in the trash. I am not sure why it even needs one.

Took mine off minutes after I bought it.
It needs a better reason to be there than 'but it came with one'.

 

[Carlo]

Took mine off minutes after I bought it.
It needs a better reason to be there than 'but it came with one'.

I just think it looks nice. Maybe after removing it a few times to get to the engine I'll leave it off too

 

[Jhwhite05]

I’ve always wondered if the beauty covers are in any way useful?

 

[Marky Dissod]

I’ve always wondered if the beauty covers are in any way useful?

I've always wondered, what's so ugly about what's underneath them?
Then I throw it out, after which I'm even more confused as to why it was covered up in the first place.

 

[justchecking]

That second Pic is of the piece at the back of the engine that makes it so difficult to change the oil pressure sensor

Has anybody discovered what GMs purpose was for the second pic (the plenum cover, not the engine cover). Sound deadening? Doubtful. Airflow direction? Dubious. Plenum protection? Unlikely. Heat protection? Nah. I’m thinking of taking mine off when I remove the plenum but I am still curious.

 

[j91z28d1]

the 2nd pic of the foam stuff under the cover?

yeah that's sound damping. the big plastic intakes tend to make the normal sounds of an engine amplified. a old school aluminium intake wouldn't, but these hollow thin plastic ones do. so people don't really like when the engine in their 50k$ truck sounds like a old sewing machine at idle. so they try and kill some of the valve clatter and stuff?

do you need it, not at all. do I leave it all on, yes because why not. what's the point of just seeing crap laying all over it? even with it off, what can ya see. some old heat cracked up harness loom and some cool packs?


on the hybrid, most of the covers have a jumper built in so that if they aren't on it will fail the pre start systems check for high voltage isolation. it catches people out from time to time after working on them and then nothing happens when trying to start it.

 

[justchecking]

the 2nd pic of the foam stuff under the cover?

yeah that's sound damping. the big plastic intakes tend to make the normal sounds of an engine amplified. a old school aluminium intake wouldn't, but these hollow thin plastic ones do. so people don't really like when the engine in their 50k$ truck sounds like a old sewing machine at idle. so they try and kill some of the valve clatter and stuff?

do you need it, not at all. do I leave it all on, yes because why not. what's the point of just seeing crap laying all over it? even with it off, what can ya see. some old heat cracked up harness loom and some cool packs?


on the hybrid, most of the covers have a jumper built in so that if they aren't on it will fail the pre start systems check for high voltage isolation. it catches people out from time to time after working on them and then nothing happens when trying to start it.

I’m talking about the rear plenum cover that blocks the oil pressure sender.