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How does the dealership flush the radiator?
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Question
Austin83
First off, I don't know anything about actual radiator flushes. I just had the local Chevy dealership flush the radiator on my 2008 GMC Sierra 1500. How exactly do they go about flushing the radiator? It doesn't appear that they even touched the lower radiator hose, and I know these radiators didn't come with a drain. The upper radiator hose doesn't appear to have been disconnected, but the reservoir hose to the radiator appears to have been disconnected. I normally do all of my own maintenance, but I didn't want to deal with the mess and hassle on this job. How did they drain the radiator? There is hardly any dripped or excess coolant on the lower end of the engine bay. Thanks.
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