Question about 2003 GMC Sierra 1500
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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