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Tank. Reservoir. Assembly - Radiator Surge. Engine Coolant. Recovery. A container that holds Engine Coolant. Engine Coolant Reservoir
Fits Sierra 2500 HD, Sierra 3500 HD, Silverado6.6 LITER DIESEL, 2017-19. Silverado, Sierra; w/Diesel. Engine Coolant Expansion Tank - Repair or ReplaceA failed expansion tank can cause the cooling system in your Buick to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.
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