GM Part# 84564686
Replace your engine block heater connection with this Genuine GM Engine Coolant Heater Extension Cable. This factory cable restores proper block-heater reach and function for GM trucks equipped with the cold-weather engine heater option.
Features:
✅ Genuine GM Part – Built to GM specifications for perfect fitment and long-term reliability.
✅ Engine Heater Extension Cable – Required to complete the coolant heater circuit on block-heater-equipped trucks.
✅ Durable Construction – Designed to withstand extreme temperatures and under-hood conditions.
✅ Factory Connector Fitment – Direct OEM replacement with proper GM weather-sealed terminals.
✅ Free Shipping – Fast delivery at no additional cost.
Vehicle Fitment:
This part is used on GM trucks equipped with the factory block-heater option. Confirmed EPC fitment includes:
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2019–2024 Chevrolet Silverado 1500
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2020–2024 Chevrolet Silverado 2500HD
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2020–2024 Chevrolet Silverado 3500HD
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2019–2024 GMC Sierra 1500
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2020–2024 GMC Sierra 2500HD
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2020–2024 GMC Sierra 3500HD
(Fitment varies based on engine and RPO K05 block-heater package. When in doubt, always verify by VIN.)
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California Residents:
California Prop 65 WARNING: Cancer and Reproductive Harm. For more information go to https://www.P65Warnings.ca.gov