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Cavalier/Sunfire Engine Swap

11-20-2011, 05:02 PM
Will the 2.2 engine from a 2000 Sunfire fit a 2004 Cavalier? Will ECM's have to be changed? Both vehicles have automatic transmission.

12-08-2011, 12:22 PM
You may have to change the upstream o-2 sensor because of the year but it should work. I recently put a '99 engine in an '02.
Good luck!

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