14-16 SIERRA SILVERADO PCM ECU ECM ENGINE COMPUTER OEM 12663437 12656993 GM ABS VIDEO Optional Core Program: If you

Optional Core Program: If you would like to send your ecu back to us for a $10 partial refund let us know in the "notes to seller" box during checkout

May fit other years and models but you must match your part number

AL1A-12A650-AJB & 9C2A-12B684-AB

68064931AC

05187943AG

14-16 SIERRA SILVERADO PCM ECU ECM ENGINE COMPUTER OEM 12663437 12656993 GM ABS VIDEO Optional Core Program: If youPart Number Service NO: 12656993 and Part Number: 12663437 Please match both of these! ECU has security and requires programming before installation. We offer FREE VIN programming so the ECU arrives and your vehicle will start once a key relearn process is completed. We will send instructions on how to complete this. During chekcout, be sure to put your VIN in the "notes to seller" field, otherwise we'll message after the purchase for your VIN. A