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

[89Suburban]

I don't think you need to program it if you buy used.

I wondering about that too if I went that route.

 

[Just Fishing]

Mine is quiet when oil is cold. Only gets noisy after the oil is fully warm and thin. IIRC I have 10-30 in it. Could be 5-30. I really can’t remember

seems to go away above 3800 rpm. Probably because everything else it making more noise lol

I pulled one of my rockers and found a clear mark from the rollers on the valve tip.
just slightly inboard!
meaning my pushrods were totally too short by just a tad.

 

[gooffeyguy]

I pulled one of my rockers and found a clear mark from the rollers on the valve tip.
just slightly inboard!
meaning my pushrods were totally too short by just a tad.

You can also blacken the valve stem tips with a sharpie and turn the motor over a couple times and look at the wear pattern

 

[Just Fishing]

Ok so I pulled the battery cable off for 20 min, grounded it. Hooked it back up. Now the window is working fine????

I was just thinking that!
I had an issue with the heated seat switch on the driver side, i was about to order a new switch.
then i took the battery off for a minute, and it's been good ever since.

 

[Just Fishing]

You can also blacken the valve stem tips with a sharpie and turn the motor over a couple times and look at the wear pattern

Step i missed when i went with the AFR heads!

Made me feel better about making the pita switch to the longer pushrod.

I'm 48% done now.

And those spacers are sorta a pita to center perfectly.
I'm sure i'll find some clearance issues when putting the plastic cover back on.

 

[89Suburban]

I was just thinking that!
I had an issue with the heated seat switch on the driver side, i was about to order a new switch.
then i took the battery off for a minute, and it's been good ever since.

Now it stopped working again. LOL. Definitely need a new switch.

 

[89Suburban]

Step i missed when i went with the AFR heads!

Made me feel better about making the pita switch to the longer pushrod.

I'm 48% done now.

And those spacers are sorta a pita to center perfectly.
I'm sure i'll find some clearance issues when putting the plastic cover back on.

View attachment 347695

Your filler tube looks so tight and solid. So jelly.

 

[Rocket Man]

Your filler tube looks so tight and solid. So jelly.

I'm getting my new one for my NBS today. I noticed mine is crooked as fck. Wish me luck.

 

[Rocket Man]

Now it stopped working again. LOL. Definitely need a new switch.

Did you use a pencil eraser on the contacts? It works great. James @swathdiver can probably hook you up with a link to a Tech2.

 

[89Suburban]

I'm getting my new one for my NBS today. I noticed mine is crooked as fck. Wish me luck.

I DO!!! Please report back! Do you have one locking nub in your hole or 2?