6L80 Assembly PT2 - Final Assembly (DEMO) - Please Read Description

** This video (part 2 of a two-video series) shows the reassembly of a 6L80 CORE that will NOT be going back into a vehicle thus no new parts were used that would otherwise be installed**

I finish up the 6L80 core demonstration rebuild, putting everything into the case and reattaching the valve body assembly, pan etc. Also covered is air-checking, pump stator design changes and other related tidbits.

The purpose of these 'DEMO' videos is to simply show the assembly process and procedures so the viewer can get a good understanding of the scope and level of effort involved when it comes to rebuilding one of these transmissions.

This particular unit was subsequently disassembled so that the internal hard parts/components can be used in future videos or in actual rebuilds as replacement hard parts.

Sonnax pump rear thrust washer: https://www.sonnax.com/parts/4795-sel...

Gears Mag/Parking Pawl Actuator TSB: https://gearsmagazine.com/magazine/6l...

More info:
*** It's recommended you retro a second design stator-pump cover assembly onto any 6L80E pump body/bell housing that came with the first design stator (see below)

6L80E Key Lifecycle Updates
mid-2007: Low sprag one-way clutch updated from 30 to 38 elements for increased durability

mid-2009: Stator redesigned to accept locking sealing rings support o-rings underneath sealing rings to improve sealing integrity against 3-5-R drum (referred to as '2nd design stator')

2010: 1-2-3-4 apply piston redesigned to reduce clutch failure due to the piston cracking; issues were still reported but not as frequent. Recommend installing Sonnax billet aluminum piston for all years

2012: Unigear style ring gear for output planetary carrier - rear speed sensor also changed to coincide with transition to unigear design.

2014: Eighth check ball added to upper valve body; separator plate redesigned (2010+ can use extra check ball if updated 2014+ separator plate is installed)

2018: Parking rod and bullet assembly hardness improved to prevent failure resulting in driver inability to place vehicle into park

More details: https://atracom.blob.core.windows.net...

Parts List for all 6L80 rebuilds:
https://www.tahoeyukonforum.com/threa...