84564686 Block Heater Extension Cable for GM 2500/3500 HD Trucks 6.6L Duramax Diesel 2020-2025, for GMC Sierra 2500/3500 HD, for Chevrolet Silverado 1500/LD/LTD, for Buick for Cadillac 2019-22

For GM 2500/3500 HD trucks equipped with the 6.6L L5P Duramax Diesel engine.- OEM for GM Part #: 84564686 (Please confirm the part number before ordering)- Replaces previous GM part numbers: 84368753, 84744850, 84789749Fitment:for Chevrolet Silverado 2500 HD & 3500 HD:Models: Custom, High Country, LT, LTZ, WT, ZR2Body Styles: Crew Cab, Extended Cab, Standard CabYears: 2019, 2020, 2021, 2022, 2023, 2024, 2025Engines: 6.6L V8 Diesel OHV TurbochargedTrim Levels: Custom Crew Cab, Custom Extended Cab, High Country Crew Cab, LT Crew Cab, LT Extended Cab, LT Standard Cab, LTZ Crew Cab, LTZ Extended Cab, WT Crew Cab, WT Extended Cab, ZR2 Crew Cabfor GMC Sierra 2500 HD & 3500 HD:Models: AT4, Denali, Denali Ultimate, Pro, SLE, SLTBody Styles: Crew Cab, Extended Cab, Standard Cab, Cab & ChassisYears: 2019, 2020, 2021, 2022, 2023, 2024, 2025Engines: 6.6L V8 Diesel OHV TurbochargedTrim Levels: AT4 Crew Cab, Denali Crew Cab, Denali Ultimate Crew Cab, Pro Crew Cab, Pro Extended Cab, Pro Standard Cab, SLE Crew Cab, SLE Extended Cab, SLT Crew Cab, SLT Extended Cabfor Chevrolet Silverado 1500 (2019):Models: Custom, High Country, LT, LTZ, WT, RSTBody Styles: Crew Cab, Extended Cab, Standard CabEngines: 2.7L 4-cylinder, 3.0L 6-cylinder Diesel, 5.3L V8 Gas OHV, 6.2L V8 Gas OHVTrim Levels: Custom Crew Cab, High Country Crew Cab, LT Crew Cab, LT Extended Cab, LT Trail Boss Crew Cab, LTZ Crew Cab, RST Crew Cab, WT Crew Cabfor GMC Sierra 1500 (2019):Models: AT4, Denali, SLE, SLTBody Styles: Crew Cab, Extended Cab, Standard CabEngines: 2.7L 4-cylinder, 3.0L 6-cylinder Diesel, 5.3L V8 Gas OHV, 6.2L V8 Gas OHVTrim Levels: AT4 Crew Cab, Denali Crew Cab, SLE Crew Cab, SLT Crew Cab

• Perfect fit for Chevrolet & for GMC 2020-2025 Models: Designed to fit for Chevrolet Silverado 2500/3500 HD (2020-2025) and for GMC Sierra 2500/3500 HD (2020-2025) trucks, including Custom, LT, LTZ, High Country, WT, ZR2, and other trim levels.
• OEM Replacement Block Heater Extension Cable: Direct replacement for OEM part # 84564686, ensuring a perfect fit for GM 2500/3500 HD trucks with 6.6L Duramax Diesel engine. Replaces part numbers 84368753, 84744850, and 84789749.
• Simple and hassle-free installation process. Replace your damaged or missing block heater cord with this extension cable in just minutes, without requiring special tools or professional assistance.
• Essential for no good Weather Starting: This extension cable is essential for proper engine block heater operation, especially in cold weather conditions. It ensures reliable engine starts and optimal performance in freezing temperatures.