*Programmed to your specific vehicle with your vin number

*Shipped to your door ready to install

*1 year replacement guarantee

*No core charge –you keep your existing ECM - no extra trips to the post office to return a core.

*We ship the same day or the following business day from receipt of payment and your 17 digit VIN. - item is in stock and ready to ship.

****** You can send us your 17 digit VIN at the time of payment in the note to seller section or by sending it to us in an ebay message.  

 ******GM installed this 12581565 ECM in all of the above application as well as several other GM applications.  This was possible because each of these models received their specific programming from the factory.  In other words, you can't simply swap a used ECM from one vehicle to the next.  We are a licensed user of the same GM software that a dealer would use to reprogram and update your computer.  With your purchase we will reprogram the ECM, with the latest software updates available from GM, to your specific vehicle using your VIN (vehicle identification number).

******We have been in the ECM business for 17+ years.  We are also a 17+ year eBay member with excellent positive feedback.

*Picture is of a 12581565 in stock.  The item you recieve will be of like finish.

Other info:

Why buy your spare ECM from us?  You will be purchasing a high quality used ECM.  You get free Flash programming with every OBDII GM computer purchased. OBDII type computers have the “chip” imbedded into the ECM and it is not removable.  The calibration file per the application is “Flashed”, or reprogrammed using a software package and a pass through device.  The “chip” is no longer removed for programming.  Proper programming is essential when replacing an ECM whether it is a used ECM or a remanufactured ECM.  A used GM computer will have the software installed that pertains to the original vehicle that it was removed from.  In some cases GM OBDII type computers will interchange with many different vehicles including those with different engine and transmission configurations.  However, unless the computer is programmed with the correct software it won’t function properly upon installation.  We will flash reprogram any OBDII computer purchased from us with your specific VIN number for the latest updated calibrations straight from GM for a stock calibration.  This is important to ensure specific vehicle programming and to guarantee flawless performance in your vehicle. At the end of the auction you will need to provide us with your VIN number.

******View our e-bay store for more ecm's.