4l80e tranny into a 86 m1008. having a few problems

[84cucv1ton]

this is a friends new truck. Got it with the 4l80e and it ready. it's from my 91 3/4 Ton suburban. coming in my driveway we heard this bang noise a few times going down the driveway the truck shuttered a bit. Don't know the mileage on the transmission. It is all stock. Any ideas what this could be?looked all over didn't see anything. thanks guys

 

[NDT]

4x4 engaged?

 

[84cucv1ton]

nope

 

[Nuke113]

Does it sound/feel like it is coming from the transmission or is coming from the front/rear end?

 

[84cucv1ton]

seems like its from the tranny

 

[84cucv1ton]

going to take this to the transmission shop now. Don't want to burn it up. I thinking its something to do with the computer and sensors. really don't know much about it