Impala 3400 engine swap with Oldsmobile Alero

[mariomarquez]

it is my impala 2004 engine (3400 v6) the same than the Alero 2004 engine (3400 v6)

can i change it??? (put the alero engine into the impala)?

[wildman]

A visual inspection will get you started, pay attention to the location of sensors and wiring.
Also, the 8'th vin digit (almost positive it's the 8'th) is the engine code.
Popular engine codes are letters like c, s, w, and z
If they're the same then the motor is at least the same version.

If the vin is different you'll have issues with the car wiring (at least)