Rear Main

[89Suburban]

This is the seal
View attachment 459941

Did you try cleaning the seal ring surface real good to look for a part number?

 

[solli5pack]

I tried to look it up just now but like you said, there's multiple choices...Its tough even with the rpo's!

 

[solli5pack]

Did you try cleaning the seal ring surface real good to look for a part number?

I did not but I will!

 

[solli5pack]

Did you try cleaning the seal ring surface real good to look for a part number?

 

[89Suburban]

View attachment 459945

https://www.amazon.com/GM-Genuine-22834330-Temperature-Aspirator/dp/B00KCOZYSM?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=ATVPDKIKX0DER&gQT=2

Got a micrometer?

 

[rdezs]

Your transfer case RPO code is NP0

So it's a single speed....

Here it is on RockAuto. It's for both the two speed and single speed and the number matches

 

[rdezs]

If you need it like today, you can take that part number into a Napa Auto parts and they can cross reference it to what they have in stock.

 

[rdezs]

Here's another image of it. Note in the details it has your correct RPO code as well

 

[solli5pack]

I searched the part # I found on the seal in the case on Amazon and it stated I purchased it in 2021. Then I realized I replaced it when I did the u-joints back in 21! Lol. I'm gonna just keep it. I gotta do a better job of keeping track of what I've replaced on my trucks...Thank you both for the help!!

 

[rdezs]

Yep, been there and done that. But sometimes after it arrives, I end up finding it on the shelf in the shop still.