Engine Block Coolant Heater Extension Cable 84564686 - Compatible with Chevy Silverado 1500/LD/LTD (2019-2024) & 2500/3500 HD Duramax Trucks (2020-2024), Replaces OE 84744850/84789749/84368753

The part indicated is a direct replacement for the following original factory part numbers: 84564686 84368753 84744850 84789749Compatible Vehicle Models (Model Years 2019–2024)Chevrolet Silverado 1500 (LD) – 2019 Silverado 1500 (LTD) – 2022 Silverado 1500 – 2019 to 2024 Tahoe – 2021 to 2024 Suburban – 2021 to 2024 Colorado – 2023 to 2024GMC Yukon – 2021 to 2024 Yukon XL – 2021 to 2024 Sierra – 2021 to 2024Cadillac Escalade – 2021 to 2024Product Features Designed in strict accordance with original equipment manufacturer specifications to ensure precise fitment and full compatibility Constructed from high-quality, durable materials to deliver stable and reliable performance Compatible with a wide range of vehicle models, meeting diverse application requirementsWarranty and Customer SupportA comprehensive product warranty is provided. This item is covered by a limited warranty of 24 months from the date of purchase. Should any issues arise during installation or use, customers are advised to contact our customer service team promptly. We are committed to providing timely technical support and, where applicable, exchange services.Purchasing and Installation GuidancePrior to purchase, please verify your vehicle’s exact make, model year, and configuration to ensure correct part selection and compatibility. It is recommended to confirm the specific model, year, and trim level of your vehicle to avoid discrepancies in fitment.

• 【Replaces Part Numbers】Direct replacement for OE part numbers: 84564686, 84368753, 84744850, 84789749.
• 【Compatible Vehicles & Model Years】Fits Chevrolet: 2019 Silverado 1500 LD | 2019–2023 Silverado 1500 | 2022 Silverado 1500 LTD | 2020–2024 Silverado 2500/3500 HD Duramax Trucks | 2021–2024 Tahoe/Suburban | 2023–2024 ColoradoFits GMC: 2021–2024 Yukon/Yukon XL | 2021–2024 SierraFits Cadillac: 2021–2024 Escalade(Please confirm your vehicle’s make/model/year before purchase for perfect fitment)
• 【 Premium Product Performance】Crafted with high-quality durable materials, this block heater extension cord ensures reliable engine preheating in cold weather. It effectively resolves issues like inefficient warming, increased fuel consumption, and potential engine wear caused by faulty or missing cables—all through factory testing for consistent performance.
• 【Easy DIY Installation】Precisely designed to match the original factory specifications, no modifications or additional tools are required. Simply remove the old cable and directly replace it with this unit to restore the Duramax engine heating system’s full functionality and efficiency in minutes.
• 【2-Year Warranty & Service Support】2-Year Warranty & Service Support We back this engine coolant heater extension cord with a 2-year warranty from the date of purchase. If you encounter any product defects or fitment issues, please contact our customer service promptly for free replacement or professional technical support—your cost-effective solution for hassle-free repairs.