i swear its only a 30 spline out put shaft after i took off the transfer case (it was a very long day but Ill go count again tomorrow) pic posted is the sticker on the side of the trans help please?!

 

where on the trans is it located? do you have a full pic of the trans?

here is 1 of my pics. the 60e is on the left. and the 80e is on the right. The tags are in different locations.

 

its a six speed from a 2008 sierra its behind a ly6 im trying to figure out if its a 80or 90e I just double checked its 29 spline here is a pic

 

im pretty sure the 90's were only in 3/4 tons and up and the 80's are in 1/2 ton platforms.

 

I need to find measurements that are known to be correct, I haven't found two overall measurements to be the same .would like to know length with or without bellhousing 4wd unit

 

im getting right about 47" from bellhousing to end of transfer case in an 08' AWD Denali. i say "about" because it was the closest i could get measuring around stuff. I measure the transfer case as "about" 23.5" so that makes the transmission "about" 23.5" as well.

 

This came off of a TBSS forum:

AWD/4WD Transmission-bellhousing to end of output shaft (bellhousing to end of case)
4L70: 26.875" (22.25")
6L80: 27.125" [+.250"] (23.3")
6L90: 28.625" [+1.750"] (24.7")
4L80: 29" [2.125"] (26")

 

You have a 6L80E.

 

Wrong, he does not.

It's a 6L90E from an LY6 powered 2500HD. The 2500HD pickup trucks never came with a 6L80E. The glove box RPO code will be MYD for that transmission. 8DKA is a GM identifier for a 6L90E.

 

with a 29 spline output shaft??? NEVER seen a 90 with the smaller output shaft. Didn't know they made a 2500HD AWD setup either... Somebody was throwing stuff together that week.