{"product_id":"gdukop-coolant-expansion-tank-603-054-for-gm-trucks-suvs-oe-fit-pa-plastic-with-cap","title":"GDUKOP Coolant Expansion Tank 603-054 for GM Trucks \u0026 SUVs — OE-Fit PA Plastic with Cap","description":"\u003cp\u003e\u003cstrong\u003eThe GDUKOP 603-054 engine coolant expansion reservoir tank with cap is a direct-replacement coolant overflow reservoir designed to restore proper coolant circulation and pressure control on compatible GM trucks and SUVs.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement expansion tank is engineered to match OE fitment and function for a range of Chevrolet, GMC and Cadillac models from mid-2000s to mid-2010s. Built from heat-resistant PA-grade plastic and supplied with a matching cap, it stores excess antifreeze, relieves system pressure when temperatures rise, and returns fluid to the radiator as the engine cools—helping your cooling system run as intended without overheating or loss of coolant.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles does this reservoir fit and how do I confirm compatibility?\u003c\/h3\u003e\n\n\u003cp\u003eThe GDUKOP 603-054 is manufactured to replace factory tanks on many GM full-size pickups and SUVs. Check your vehicle’s year, make and model against the compatibility list and compare the OE part numbers on your existing tank.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible models include Cadillac Escalade\/Escalade ESV (2007–2014)\u003c\/li\u003e\n  \u003cli\u003eChevrolet: Silverado 1500 (2007–2013), Silverado 2500\/3500 (2010–2013), Suburban (2007–2016), Tahoe (2007–2014), Avalanche (2007–2013)\u003c\/li\u003e\n  \u003cli\u003eGMC: Sierra\/Sierra 1500 (2007–2018), Sierra 2500\/3500 (2007–2018), Yukon\/Yukon XL (2007–2014)\u003c\/li\u003e\n  \u003cli\u003eReplacement OE numbers include 603-054, 22870828, 22797286, 15833723 and related IDs—match with your existing part for certainty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and design features ensure durability?\u003c\/h3\u003e\n\n\u003cp\u003eThis tank uses reinforced PA plastic engineered to resist high under-hood temperatures, vibration and exposure to coolant chemicals. The integrated mounting points and sealing surface are molded for a secure fit, while the included cap is selected to maintain correct pressure levels for the specified vehicles.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHeat- and chemical-resistant PA (polyamide) construction for longevity\u003c\/li\u003e\n  \u003cli\u003eMolded mounting bosses and inlet\/outlet ports to match OE geometry\u003c\/li\u003e\n  \u003cli\u003eIncluded pressure cap designed for specified cooling-system calibration\u003c\/li\u003e\n  \u003cli\u003eVibration-tolerant build to reduce risk of cracks or leaks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does an expansion tank affect engine cooling and performance?\u003c\/h3\u003e\n\n\u003cp\u003eAn expansion (antifreeze) reservoir controls coolant overflow and recovery as temperatures change, preventing air pockets and preserving proper coolant volume. A functioning tank helps the system maintain correct operating temperatures and reduces the strain on the radiator and thermostat assembly.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eStores expanded coolant when engine temperature rises and returns fluid as it cools\u003c\/li\u003e\n  \u003cli\u003eHelps prevent air from entering the cooling loop, aiding heater performance\u003c\/li\u003e\n  \u003cli\u003eMaintains correct pressure to protect hoses and radiator from overpressure\u003c\/li\u003e\n  \u003cli\u003eReduces the chance of low-coolant-related overheating issues\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat warranty and support are provided with this part?\u003c\/h3\u003e\n\n\u003cp\u003eGDUKOP backs this expansion tank with a one-year unlimited-mileage guarantee for peace of mind after installation. Customer support is available for fitment and installation questions, with typical response windows posted by the seller.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOne-year unlimited-mileage warranty against manufacturing defects\u003c\/li\u003e\n  \u003cli\u003eAfter-sales contact available—expect a response within 48 hours\u003c\/li\u003e\n  \u003cli\u003eSold as a complete tank assembly with cap to simplify replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The GDUKOP 603-054 expansion reservoir is aimed at owners and technicians maintaining GM full-size trucks and SUVs listed above who need a reliable, OEM-style replacement. It suits DIY mechanics replacing a cracked or leaking reservoir, fleet managers keeping older vehicles roadworthy, and repair shops seeking a budget-conscious, durable alternative that matches OE specifications.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this reservoir a direct replacement for my Silverado 1500?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If your Silverado is a 2007–2013 model, the GDUKOP 603-054 is listed as a direct-fit replacement; confirm by matching OE numbers or comparing mounting points.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the tank come with the cap and warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—the assembly includes the pressure cap and carries a one-year unlimited-mileage warranty with seller support.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GDUKOP","offers":[{"title":"Default Title","offer_id":48086722117790,"sku":"B0FBM62N32","price":58.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gdukop-reservoir-front-view_56cf2109-d9dd-458e-9e11-57dc48e6b1b6.jpg?v=1785902985","url":"https:\/\/northtrailauto.ca\/products\/gdukop-coolant-expansion-tank-603-054-for-gm-trucks-suvs-oe-fit-pa-plastic-with-cap","provider":"North Trail Auto","version":"1.0","type":"link"}