OEM Allison 1000 External Harness

Quality external connector harness for the Allison 1000 series transmission electronic control system. This OEM external wiring is essential for proper transmission operation and communication between the TCM, ECM, and transmission internal components. The Allison electronic control system is sophisticated and requires reliable electrical components for correct shift programming and diagnostics.

Compatible with 2001-2019 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD with Duramax diesel and Allison 1000 transmission. Direct replacement with plug-and-play installation. No additional programming required for sensor replacements.