Please settle this debate!
A few days ago my best friend, his dad and i went to the junkyard to get transmission cores to rebuild. We stumbled upon a 2001 Silverado 2500HD. Im not sure which engine it had, but it was a gas engine due to the small exhaust piping.
The trans is still under the truck connected to the transfer case. It looks like a 4L80E to me. My buddies dad (who owns a transmission shop) is telling me that its a TH400. I didnt want to argue with the guy because he's been building transmissions for longer than ive been alive.
I believe its a 4l80E, because for one I thought the turbo 400s were REPLACED by the 4l80E.. and two I dont think the EPA would allow a vehicle to have no overdrive because of pollution, but then again I MAY BE WRONG!
Please answer this!
Provide the VIN of that truck and you can easily find what the truck Originally had.


