[theonlypheonix]

REPLACE PART 12647009 EVERY TIME KIT 55593617 IS REPLACED, 12647009 is no longer made.......

Kit 55593617 is the EGR valve, sooo... what is part # 12647009? Is that a gasket otherwise why does it need to be replaced everytime?

 

[diesel]

Kit 55593617 is the EGR valve, sooo... what is part # 12647009? Is that a gasket otherwise why does it need to be replaced everytime?

The part description is "plate" but these descriptions can be misleading.

 

[[email protected]]

The part description is "plate" but these descriptions can be misleading.

I ordered one from Chevy should hopefully be here this week. I will post a photo as soon as it arrives.

 

[[email protected]]

The plate finally arrived and it is a metal piece with a rubber coating on top of it. Feels like the rubber part would get compressed over time.

 

[theonlypheonix]

The plate finally arrived and it is a metal piece with a rubber coating on top of it. Feels like the rubber part would get compressed over time.
View attachment 227410

That seems a little strange, a solid plate like that? I thought GM generally uses stamped tin for the EGR gaskets and exhaust manifold gasket. Is there coolant in that side passage? The work shop manual states to drain the cooling system when removing the EGR valve?? It also looks like there are fours screws holding the plate to the head, can the EGR be removed by itself without removing the plate??

 

[charleygee]

bad egr valve and location

Can anyone tell me location of the EGR valve?
I want to clean it myself by removing and getting Moly egr spray cleaner. I read the GM doesn't clean them they only replace them

Has anyone removed theirs to clean?

Thanks.

 

[IndyDiesel]

Can anyone tell me location of the EGR valve?
I want to clean it myself by removing and getting Moly egr spray cleaner. I read the GM doesn't clean them they only replace them

Has anyone removed theirs to clean?

Thanks.

It’s located driver side on the firewall side on the block. Mine stuck open about a year ago and wouldn’t start. I also replaced the MAF sensor a couple months ago it was full of soot as well. EGR has an electrical connection to it, unplug and has I think three bolts in it.