ecm interchange on 2005 Cadillac SRX

I have a 2005 CAD SRX,the number 4 injector is misfiring,and the dealer says its the ECM.I bought a used ECM from a 2005 SRX with the same first 8 numbers as my vin:1GYEE637.Both have the same Service number:12592124.Can I just plug it into my car,or will I need the dealer to reprogram it to work. Thanks Carroll

Asked by for the 2005 Cadillac SRX
You will need to have the ecm reflashed. However you do not have to go to a dealer, a well equipped independent repair shop will have a tool called a J2534 reflasher. When you do this you will also get any of the updates that where done to this vehicle by the manufacture. Your cost will be about $125 or so.

Neil Bilodeau
SAF-T Auto Centers
Wallingford, CT 06492