Applicable models: This transmission cooler bypass valve is suitable for GMC Sierra, Yukon 2014-2020; suitable for Cadilac CT6 2016-2018; Fit for 2015 Escalade; suitable for Chevrolet Silcerado; suitable for Chevrolet Suburban, Tahoe 2015-2020Function improvement: This bypass valve adjusts the coolant flow in the engine and cooling system according to the temperature, thereby optimizing engine performance and preventing cooling and overheating. Bypass valve replacement OE number: 86774933, 13511136, 85585333High quality: Improve engine efficiency and protect important transmission components by eliminating extreme temperatures. Reduce stress and risk of premature wear or failureExcellent performance: The bypass valve is made of high-strength, corrosion-resistant aluminum alloy with excellent wear resistance and electrical and thermal performance, ensuring the product is strong and durable and can last in harsh environmentsEfficiency: A key upgrade to the transmission cooling system that improves reliability, overall efficiency and extends the life of the cooling system, minimizing the frequency of expensive repairs