The BD TowMaster Allison 1000 transmission and converter package for 2004.5–2006 Chevy LLY 5-speed 4WD pairs a dyno-tested complete transmission with an enhanced-stall torque converter. Upgrades include BD's aluminum deep transmission pan (+3.5 qt capacity), revised oil circuits, increased clutch counts and more lock-up clutch material. The matched package is intended for towing and heavy-duty street use and carries parts and labor warranty coverage.
BD Diesel Transmission - 04.5-06 Chevy LLY Allison 1000 5-Speed 4WD Transmission & Converter Pack