Can Someone Identify the Blue Part on Top of the Engine?
- Thread starter Hurricane87
- Start date
Hurricane87
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Scottydoggs
Killa Bee
ive got a 5.3 in my tahoe, so not exactly the same set up, but my vac line from the top of the intake goes to a valve cover's pcv valve. its where you would install a catch can. between that line.
that other line looks fat enough to be evap related. im not even sure where im looking either in that pic.
that other line looks fat enough to be evap related. im not even sure where im looking either in that pic.
Hurricane87
New member
It doesn't go into a valve cover, it's in the valley between them. The second picture is below and to the left of the throttle body.
Fivefingerdeathpunch
New member
Many LS engines have the PCV line into the valley cover and not the valve covers. But the LS4 should have a tube coming out of the rear valve cover that the PCV hose goes into.
The port on the intake manifold is likely another port used in a different applications. If you can put your finger over it and there is no air being sucked in, that port is blocked. My guess is that it's a PCV or EVAP line connection that just isn't used.
The port on the intake manifold is likely another port used in a different applications. If you can put your finger over it and there is no air being sucked in, that port is blocked. My guess is that it's a PCV or EVAP line connection that just isn't used.
Hurricane87
New member
I cannot, of course, nail down the part number on the PCV hose for the LS4. However, every hose I can find is rubber or plastic. This thing is metal.
Hurricane87
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Thank you, but what is it called, so I can order another one?
Fivefingerdeathpunch
New member
You will have to contact a GM dealership directly for that.
The vehicle is over 10 years old and they don't have to make parts for it anymore. I don't see it listed on GM parts direct anymore so if there is a part number for that part, it's new old stock. They would have a complete parts list breakdown for it.
Or just do what anyone else would do and buy a piece of rubber hose to make a new one if you needed to do that.
The vehicle is over 10 years old and they don't have to make parts for it anymore. I don't see it listed on GM parts direct anymore so if there is a part number for that part, it's new old stock. They would have a complete parts list breakdown for it.
Or just do what anyone else would do and buy a piece of rubber hose to make a new one if you needed to do that.
Hurricane87
New member
No luck. I ordered that. It's black plastic and connects to the MAF sensor, not the engine. The one I have is just fine.
Anyone else?
Anyone else?
ENGINE ASM-5.3L V8 PART 2 CYLINDER HEAD AND RELATED PARTS
As I said it's plastic on my car, the part I gave you is what is listed as it goes to the rear valve cover . If you have not owned the car since new chances are it's been replaced, possibly with a part from a truck or some other doner vehicle. It's not available so used or custom fit a new piece is your choice of repair.
As I said it's plastic on my car, the part I gave you is what is listed as it goes to the rear valve cover . If you have not owned the car since new chances are it's been replaced, possibly with a part from a truck or some other doner vehicle. It's not available so used or custom fit a new piece is your choice of repair.