Transmission Wiring Internal Harness 29545307 For Allison Chevrolet Silverado 2500 Easy Installation: Perfect Compatibility, A direct replacement, saving time and effort, Professional installation is highly recommended. High Quality: The Transmission Wiring Harness uses advanced technology and processes, Made Of High-Quality Materials And Have Passed Strict Quality Inspections, Which Are Good In Performance And Durable. Part Number: 29545307, 121446E, 350-0180 For Chevrolet Silverado 2500 3500 2011-2019