charp1824

I just replaced my rear main seal and obviously you have to remove the transmission. After I got everything back together, I drove it around and noticed it shifts hard now. When I put it into gear it spits and sputters and eventually will die and it idles perfect. Never had any problems before shifted great and ran great. it seams shifting into 4th gear is smooth and normal but not the other gears. What could it be? Something electrical? 04 GMC 2500HD 6.0L 4L80E

I been researching the 6.0l and I know I need an 03-06 6.0 to swap into my 06 Silverado. I know it would be ideal to swap my 60e for an 80 but that will have to come at a later date. I have a couple of questions on the swap... I found an 03 Escalade... Because it's a Cadillac will the engine bolt right in to my 06 Silverado no problem? All the plugs work and the computer?