Shop used Mack Pinnacle CXU612 Engine Control Modules (ECM) on MyLittleSalesman.com . Compare active listings with prices from $250 to $995. Sellers include DTI Truck Parts, Garabedian Equipment, and CRG Heavy Truck Parts. Filter by condition, price, or year to find the Mack Pinnacle CXU612 Engine Control Module (ECM) that fits your job.