Description
Replace your damaged or missing block heater cord with this Genuine GM Block Heater Extension Cable. This cord is essential for cold-weather starting and proper function of the engine block heater on GM 2500/3500 HD trucks equipped with the 6.6L L5P Duramax Diesel engine.
Why Choose This Cable? This is not an aftermarket part, this is the real deal from GM. Ensure proper connection from the front bumper to your power source, providing reliable block heater performance all winter long. If your original cord is missing, cut, or damaged—this is the correct replacement.
Product Features:
– OEM GM Part #: 84564686
– Replaces previous GM part numbers: 84368753, 84744850, 84789749
– Plugs into standard 110V wall outlet
– Brand new, sealed in original GM packaging
Direct Fit for:
2020–2025 Chevrolet Silverado 2500/3500 HD 6.6L L5P Duramax
2020–2025 GMC Sierra 2500/3500 HD 6.6L L5P Duramax
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