Can I put a 2002,3400 motor and trans in a 2006 body that had a 3500 motor and trans in it????

 

Not easily. The electronics are controlled by a lot of the computer on the 2006 and won't swap over easily.

 

So i would have to swap everything including the computer?

 

You would have to swap the interior gauges, and speedo, etc. Hell, the locks might not even work because the BCM, PCM, and TCM all need to talk to each other.

Not just the wiring harness and PCM.

 

Okay..but it can be done right?someone is working in my car.and I bought the 2006 body because mine is wrecked

 

Anything can be done. It would be much cheaper to honestly get a junk yard 3500 and put that in the 2006 if that car's motor is bad.

 

I understand what your saying,I’m still driving my car that is wrecked.i just needed a body

 

Let's take a step back then.

What's the full situation?

 

I bought a 2002 Monte Carlo,it has a 3400 motor in it.i wreck it last December.i was looking for a body for the motor and trans.i came across a 2006 Monte Carlo with a 3500 motor in it,the lady I bought it from said that something is wrong with the transmission.today someone told me that I couldn’t put my motor and trans because the computers would not match up.i hope I’m not out of 500

 

If the 2006 is in better shape, you can always just grab a junkyard transmission and call it a day. Actually just the transmission from your 3400 might work in the 3500. I'm not sure if the electrical change that occurred in 2003 affects the 3400 like it does the 3800.

Swapping the engine and trans from the 2002 into the 2006 is not a cost-effective option at all. The labor to do that swap is insane, and they will be chasing a ton of electrical issues all around while they splice and create new connections.

Or depending on what is wrecked on the 2002, you might be able to reuse panels from the 2006 and fix the 2002.