Question about 2003 GMC Sierra 1500

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I need to put coolant in my 2003 GMC Sierra 1500, but I don't know where the cap is.

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Coolant should be added to the plastic expansion tank located under the hood. It will have a full and low mark printed on the tank, fill it to the full mark and close the cap. the cap should be a yellow color. Make sure it is for the engine coolant, NOT the windshield washer fluid.

Posted on Jan 02, 2011


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Posted on Jan 02, 2017


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