Genuine GM 85590391 Block Heater Cord 2017-2019 L5P Duramax Silverado Sierra

Replace your aging, damaged, or failed engine block heater cord with this Genuine GM Engine Block Heater Cord, part number 85590391, designed for 2017–2019 Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L L5P Duramax diesel engine. The block heater cord supplies electrical power to the engine block heater, helping keep the engine warmer for easier cold-weather starting. Over time, the original cord can deteriorate from age, heat, vibration, and exposure to the elements. A damaged or shorted cord may cause the block heater to stop working and can potentially create an electrical or fire hazard. This updated Genuine GM replacement cord supersedes several earlier GM part numbers and provides the correct OEM fit and connection for your L5P Duramax. Features & Benefits: - Genuine OEM GM component - Updated replacement engine block heater cord - Helps restore proper block heater operation - Helps improve cold-weather starting - Direct replacement for the original heater cord - Replaces aging, damaged, or shorted factory cords - OEM-quality connectors, wiring, and fitment - Designed specifically for applicable L5P Duramax trucks Part Information: Brand: Genuine GM GM Part Number: 85590391 Replaces / Supersedes: 23321379, 84303149, 84807829 UPC: 195491241183 Vehicle Fitment: 2017-2019 Chevrolet Silverado 2500HD / 3500HD 6.6L L5P Duramax 2017-2019 GMC Sierra 2500HD / 3500HD 6.6L L5P Duramax