I have the lovely broken rear exhaust manifold bolts to fix. I have the brackets that I could do a temp fix with, but thinking that I want to do it the right way and remove the heads to get the broken ones out. Partly due to seeing oil around the valve covers and I am not sure where it is coming from. I have read that there are issues in the valley cover area and wondering if it is there, valve cover gaskets or something else. My plan would be to remove the heads, get the bolts out, have a shop check the head for level, new gaskets on everything removed, etc.
I am thinking to do all of this at once since I will be in there, so I am wondering what else I should look at/consider doing while I have it tore down this far. I've done the oil pressure unit fairly recently. I've read that there are some issues with lifters in some of these, but not sure this is that year. It's a 2011 Yukon with around 170k. Attached are a few pics of the oil that I am seeing. I live in a cold climate so it will still be a short bit before I tear into this. Thanks for any suggestions.
I am thinking to do all of this at once since I will be in there, so I am wondering what else I should look at/consider doing while I have it tore down this far. I've done the oil pressure unit fairly recently. I've read that there are some issues with lifters in some of these, but not sure this is that year. It's a 2011 Yukon with around 170k. Attached are a few pics of the oil that I am seeing. I live in a cold climate so it will still be a short bit before I tear into this. Thanks for any suggestions.
Attachments
Last edited: