Swapping my 3400 motor and trans out of my Pontiac into my 2003 Chevy impala

Asked by Nov 15, 2016 at 12:25 AM

Question type: Car Customization

Will the Pontiac motor and trans work in my 03
Chevy impala

1 Answer


yes, quite easily, but make sure to trade the ecm and the harness as well. the vin for the pontiac is stored in the ecm and even though the engine is in all gm cars, if the car years are different the emissions criteria may be different between years.

Your Answer

Add photo

Related Questions


Search Car Customization Questions

Car Customization Experts

#1 Tom Demyan
Tom Demyan
Reputation 5,750
Reputation 3,660
#3 F_O_R
Reputation 3,650
View All

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.