GM 22948113 Tank Assembly, Radiator Surge

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To remove the cooling system, start by draining it. On 2007 and earlier models, remove the left side cowl panel and disconnect the hoses. If the model has a manual transmission, unbolt the clutch master cylinder reservoir and set it aside. Slide the master cylinder forward without disconnecting the brake lines and position it out of the way. Remove the surge tank mounting fasteners and take out the tank. On 2008 and later models, remove the fasteners securing the coolant reservoir to the fender, lift it up to disconnect the hoses, and disconnect the fluid level sensor if present. Clean the tank with soapy water and a brush to remove any deposits and inspect it for cracks. If a crack is found, replace the reservoir. To install, simply reverse the removal steps.