56044555AO
 
ECU has SKIM security and requires programming before installation.

ECU has Federal emissions

We offer FREE programming, see details below!

This ecu will interchange or replace the following part numbers:

56044555AH
56044555AI
56044555AJ
56044555AK
56044555AL
56044555AM
56044555AO
56044555
P56044555AO
R6044555AO
56044555AG
56044555AF

ECU has been tested with our state of the art vehicle simulator which tests over 25 circuits of the ECU! Some of those are listed below:

• Reference Voltage Good!
• ECU powered up and has communication!
• ECU fuel pump/main relay test good!
• ECU injectors/coils test good and much more!  

• Disconnect the negative terminal of the battery. Make sure the battery connector is not touching the battery post.
• Disconnect and remove the module to be replaced.
• Install and connect the replacement module.
• Connect the negative terminal of the battery.
• See "Programming" below for additional install instructions. 

For Plug and Play you must follow the below three steps:

Step 1: Match your part number series per above fitment guide

Step 2: Match your ecu security. Most NGC style ecu's have SKIM security and are not plug and play. (You generally will have grey ignition keys or chipped keys.) 

Step 3: Program ecu to your VIN and mileage. We provide free programming for our customers. During checkout you must list your VIN and mileage in the "Notes to Seller" for us to program the ECM. If we do not hear from you through the order notes or a message through eBay we will assume your mechanic is performing the programming (no problem at all) and we will ship the ECM out the next business day as directed by eBay.

• Mounting points are all open and intact
• Pins perfect, none are broken or bent
• Lock tabs in place. There may be some chipped connector plastic but install will not be an issue and again the lock tabs are in place.

This ECM comes with a 90 day warranty from the date of purchase. Please keep a copy of your purchase record which we will send with your item.


If you would like to return your core for a $35 partial refund let us know during checkout through the "notes to seller" and we will send a prepaid return label with your order. It's that simple. Once your original item comes in we will process your refund promptly.