84564686 90 Inches Engine Block Heater Cord, Engine Coolant Heater Cable replacement for 2019-2024 Chevy Silverado 1500 2500 3500 HD Duramax, GMC Sierra Yukon

This 84564686 Engine Block Heater Cord is a high-quality replacement power cable designed to connect your vehicle’s engine coolant heater to a standard electrical outlet. It delivers consistent power to pre-warm the engine, improving cold-weather starting performance and reducing engine wear in freezing temperatures.Product SpecificationsReplacement Part Number: 84564686, 84368753, 84744850, 84789749Cable Length: 90 inches (2.28 meters)Connector Type: 3-prong standard plug + vehicle-specific block heater connectorVoltage Rating: 120V ACOperating Temperature Range: -40°F to 140°F (-40°C to 60°C)Insulation Material: Weather-resistant PVCCompatibility:Compatible with Cadillac Escalade 2021–2025Compatible with Chevy Silverado 1500 (LD/LTD) 2019–2023Compatible with Chevy Silverado 2500HD 2020–2024Compatible with Chevy Silverado 3500HD 2020–2024Compatible with Chevy Tahoe 2021–2024Compatible with Chevy Suburban 2021–2024Compatible with Chevy Colorado 2023–2024Compatible with GMC Sierra 1500 2019–2024Compatible with GMC Sierra 2500HD 2020–2024Compatible with GMC Sierra 3500HD 2020–2024Compatible with GMC Yukon (XL) 2021–2024Compatible with Buick Envision 2021–2025Common Problems This Cord Solve:Worn, cracked, or damaged factory block heater cordsShort cords that don’t reach power outletsLoose connections causing the heater to not workCold-weather hard starts and engine wearUnreliable power delivery to the engine heaterPackage Include:1Pc × 90-Inch Engine Block Heater Cord

• [Replacement for 84564686] This engine block heater cord strictly follows the original 84564686 part specifications, ensuring a seamless fit with your vehicle’s existing block heater. It matches the original’s power transmission performance, avoiding loose connections or power loss issues
• [Full Compatibility] This engine coolant heater cable offers full compatible with Cadillac Escalade 2021-2024, Chevrolet Silverado 1500/LD/LTD 2019-2023, Chevrolet Silverado 2500/3500 HD Duramax Trucks 2020-2024, GMC Sierra/Yukon (Including XL) 2021-2024, Chevrolet Tahoe/Suburban 2021-2024, Chevrolet Colorado 2023-2024, Buick models 2019/2022, ensuring a seamless fit with no modifications required
• [90-Inch Length for Cold-Weather Convenience] The 90-inch extra-long cord provides sufficient reach to connect to outdoor power outlets, even when the vehicle is parked in tight spaces. It effectively delivers power to the block heater, pre-warming the engine to reduce cold-start wear and improve winter startup efficiency
• "[Tool-Free Plug-and-Play Installation] No professional tools or modifications needed—simply plug one end into the vehicle’s block heater socket and the other into a standard 120V power outlet. The process takes less than 2 minutes, making it easy for anyone to use
• [Heavy-Duty Weatherproof Design] Made of thickened PVC insulation and corrosion-resistant metal connectors, the cord withstands extreme temperatures (-40°F to 140°F), rain, snow, and road debris. It maintains stable performance in harsh outdoor environments, ensuring long-term reliable use