Buy GMC Sierra 3500 HD Radiators
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ID: 1✓ In Stock
Radiator Assembly for 2017 - 2019 GMC Sierra 3500 HD, 84224661, Replacement
For 6.6 Liter Turbo models.
OEM # 84224661$430.95 -
ID: 2✓ In Stock
2020 - 2025 GMC Sierra 3500 Hd Radiator
Applies to 2020 and 2021 models.
Requires the 6.6 Liter Diesel Engine.
OEM # 84799449$846.95 -
ID: 3✓ In Stock
2020 - 2025 GMC Sierra 3500 Hd Radiator
Applies to 2020 and 2021 models.
Requires the 6.6 Liter Diesel Engine.
Must be the Auxiliary radiator.
OEM # 84098260$163.95 -
ID: 4✓ In Stock
Radiator for Chevrolet Silverado/GMC Sierra 2500 HD/3500 HD, Suitable for 6.0L Engine Models from 2011-2019, Replacement
⚠️ IMPORTANT: This radiator fits 6.0L GASOLINE engine models ONLY (2011-2019). DOES NOT FIT 6.6L Duramax Diesel engines.
This is a complete assembly.$458.95 -
ID: 5✓ In Stock
Aluminum Core Radiator for 1999-2006 Silverado, 8 Cylinder, 6.0L Engine, 1-Row Core, with Engine Oil Cooler, Includes 2007 Classic, Replacement
This fits models equipped with the 6.0 Liter or 6.2 Liter Engine.
It includes the Engine Oil Cooler.
OEM #: 22840116$195.95
Overview
The radiator in the GMC Sierra 3500 HD plays a crucial role in maintaining the engine's temperature. As part of the vehicle's cooling system, it helps dissipate heat generated by the engine during combustion. This heavy-duty truck relies on an efficient heat exchanger to ensure optimal performance, especially when towing or hauling heavy loads.
Common Symptoms of Radiator Issues
Owners of the GMC Sierra 3500 HD may experience certain symptoms indicating radiator problems. Overheating is a primary sign, often accompanied by the temperature gauge rising above normal levels. Coolant leaks under the vehicle or a drop in coolant levels without any visible leaks can also suggest radiator issues. Discolored or rusty coolant may indicate internal corrosion within the cooling radiator.
Maintenance Tips
Regular maintenance of the radiator is essential to prolong the life of the GMC Sierra 3500 HD's engine. It's important to check coolant levels routinely and top off with the manufacturer-recommended antifreeze when necessary. Periodic radiator flushes help remove sediment and prevent blockages in the cooling system. Inspecting hoses and connections for signs of wear or leaks can prevent minor issues from escalating.
Installation Tips
When installing a new radiator in the GMC Sierra 3500 HD, ensure the engine is cool before beginning the process. Drain the existing coolant properly and dispose of it according to local regulations. Carefully disconnect all hoses and remove mounting brackets without applying excessive force. After installing the new heat exchanger, refill the system with the appropriate coolant mixture and bleed any air pockets to prevent overheating.
Frequently Asked Questions
Q: How often should I replace the radiator in my GMC Sierra 3500 HD?
A: Radiators typically last several years but should be inspected regularly. Replace it if there are signs of leaks, corrosion, or significant damage that affects performance.
Q: Can I use any type of coolant in my radiator?
A: It's important to use the coolant type recommended by GMC for the Sierra 3500 HD to ensure optimal cooling performance and prevent damage to the cooling system.
Q: What causes the radiator to fail?
A: Common causes include corrosion, physical damage from debris, internal blockages from sediment, and deterioration of materials over time.
Commonly Reported Problems
Some GMC Sierra 3500 HD owners have reported issues such as radiator leaks due to cracked plastic tanks or worn seals. Accumulation of debris between the radiator and the condenser can also reduce airflow, leading to overheating. Regularly checking and cleaning these areas can mitigate such problems.
Importance of Radiator in Vehicle Performance
The radiator is essential for dissipating excess heat from the engine, preventing overheating, and ensuring the GMC Sierra 3500 HD runs efficiently. A well-functioning cooling system contributes to better fuel economy, prolongs engine life, and maintains overall vehicle reliability.
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