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swapping transmission

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Old 06-10-2011, 01:26 PM
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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?

Last edited by brantb; 06-10-2011 at 02:07 PM.
Old 06-11-2011, 10:10 AM
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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
Old 06-13-2011, 10:34 AM
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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?
Old 06-13-2011, 08:12 PM
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You will have to swap the bell housing with your original to make it work but yes everything will work. HTH Vince
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