What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[Doubeleive]

spray some starting fluid or brake cleaner, etc around the edges of the intake manifold see if it changes the idle.

 

[Rocket Man]

I went from this:



View attachment 248475 View attachment 248476 View attachment 248477













To this:





View attachment 248480

uh-oh

 

[BG1988]

cleaned the A/C condenser and add transmission fluid ¾ of Qt not losing any but it was not filled up correctly by who ever did the service before


looks like they were skimming off the top

 

[wjburken]

Is anybody here familiar with doing this valley cover gasket job with the AFM solenoids under it?

IS IT POSSIBLE, replacing just the perimeter gasket and NOT the gaskets for the solenoid oil ports underneath has this thing ****** up and misfiring?

Yes.
Your VLOM gasket should look like this I believe. It has the gaskets for your oil ports that pressurize your lifters.

 

[Sam Harris]

I went from this:



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To this:





View attachment 248480

Sorry man. Wish I could help out. But your post was still funny as hell. Thanks for the laugh! Especially the axe. ROFL

 

[89Suburban]

Yes.
Your VLOM gasket should look like this I believe. It has the gaskets for your oil ports that pressurize your lifters.

View attachment 248482

I concur. I am going with this theory and will start all over again. Just to eliminate that out of the question because I really believe everything thing else is good. That’s the only doubt I have right now is not replacing those. Also found this @ 2:47, cause #2.

Just screwed now until Tuesday to try and track down new parts. Means I have to call out of work too now. And hopefully get this fixed.

 

[wjburken]

I concur. I am going with this theory and will start all over again. Just to eliminate that out of the question because I really believe everything thing else is good. That’s the only doubt I have right now is not replacing those. Also found this @ 2:47, cause #2.

Just screwed now until Tuesday to try and track down new parts. Means I have to call out of work too now. And hopefully get this fixed.

I feel for you my friend. Good luck.

 

[gooffeyguy]

I guess mine does have that foam under the intake. It's further back than I thought it would be and couldn't see it until I got my phone down by the pulley and took a pic

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[BG1988]

I concur. I am going with this theory and will start all over again. Just to eliminate that out of the question because I really believe everything thing else is good. That’s the only doubt I have right now is not replacing those. Also found this @ 2:47, cause #2.

Just screwed now until Tuesday to try and track down new parts. Means I have to call out of work too now. And hopefully get this fixed.

just rent a car they are renting for practically for nothing now days

 

[Sam Harris]

I concur. I am going with this theory and will start all over again. Just to eliminate that out of the question because I really believe everything thing else is good. That’s the only doubt I have right now is not replacing those. Also found this @ 2:47, cause #2.

Just screwed now until Tuesday to try and track down new parts. Means I have to call out of work too now. And hopefully get this fixed.

Can’t like