Will a trans from a 04 work on a 02 motor. I know that everything will bolt up, but is there a difference in the electronics? If it matters this is for a 4.8.

Also, anyone have a pic or great description of where the vin derivative is located on the block?

Edit: From looking at car-part.com, it seems to pull up different transmissions for the 4.8 than it does for the 5.3. Is there actually a difference, or is it just trying to match things perfectly?

 

The trans and its electronics will work just fine. I think yards do this to make sure you have an exact match as to what comes out of your vehicle. The only thing I see in some units is that the feed hole sizes in the separator plate might be slightly different. I would say you will be fine. If you don't like the way it shifts you can always add a shift kit and tune up the shifts. HTH Vince

 

I know that trailblazers have the 4l60e trans, but is the bellhousing/electronics/torque convertor size the same as a v8 if it is behind a 4.2. I know the TC will give me a better stall behind a v8, which will be better for me.

I have read a few threads over and people say that they bolt up, but want to make sure. What about programming them? Is there going to be any difference there?

 

You will have to swap the bell housing with your original to make it work but yes everything will work. HTH Vince