GMC 15762438 Radiator Assembly *Marked Print

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To remove the radiator, drain the cooling system and remove the air cleaner assembly, intake duct, and coolant reservoir. Next, disconnect the upper radiator hose, heater outlet hose (if equipped), vent pipe hose (if equipped), and lower radiator hose from the radiator. Carefully disconnect the transmission cooler lines and engine oil cooler lines (if applicable) from the radiator. On 2018 and later models, remove the grille and left headlight housing, then disconnect the air conditioning refrigerant line from the condenser and plug and cap the fittings. The installation process is the reverse of removal, ensuring that the radiator is properly seated in the lower rubber mounts and the cooler lines are securely connected with the retaining clips and plastic collars. After installation, refill the cooling system and check the engine oil and automatic transmission fluid levels.

The upper radiator hose, heater outlet hose (if equipped), vent pipe hose (if equipped), lower radiator hose, transmission cooler lines, and engine oil cooler lines (if applicable) should be disconnected.