06 ENVOY TRAILBLAZER IMPALA 5.3L PCM ECU ECM COMPUTER 12603390 PROGRAMMED TO VIN Featured Products 3W6A-12A650-AC

3W6A-12A650-AC

See pictures prior to purchase

5L3A-12A650-ANG

13642509 WITH PIN SET UP 40-6 Plus center connector completely different than standard GM ABS modules

68057110AJ

06 ENVOY TRAILBLAZER IMPALA 5.3L PCM ECU ECM COMPUTER 12603390 PROGRAMMED TO VIN Featured Products 3W6A-12A650-ACPart Number Service NO: 12596679 and Part Number: 12603390 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