Mattygwheeler
Well-known member
- Joined
- May 21, 2020
- Member Number
- 1036
- Messages
- 213
hey everyone! I’m gathering parts to one ton, solid axle swap, 4wd swap my 2005 GMC 2500 with 6.0 and 4l80e. I have this BW4401 PTO tcase and 4l80 adapter from a mid 90s k3500. There isn’t much info on the 4401 tcase specifically regarding the coil, clutch shift mechanism. I Was wondering how it works? I can shift the case through all its modes using the manual shifter, the diagrams I have found are not very clear. Parts 24 and 22 in the diagram is the coil, shifter device. There is a 1 wire plug leading to the coil mechanism, this coil must shift something but everything works manually? Maybe shifts the PTO? Anyways, seems kinda newbie’ish so I posted here.