06 ENVOY TRAILBLAZER IMPALA 5.3L PCM ECU ECM COMPUTER 12603390 PROGRAMMED TO VIN Featured Products your vehicle is gas and

your vehicle is gas and you do not have the chrome rings around your gauges

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ECU has been rebuilt then tested with our state of the art vehicle simulator which tests over 25 circuits of the ECU

5L3A-12A650-ANG

05187341AH

06 ENVOY TRAILBLAZER IMPALA 5.3L PCM ECU ECM COMPUTER 12603390 PROGRAMMED TO VIN Featured Products your vehicle is gas andPart 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