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the rubber elbow is a drain for the heater and ac box, it should only have clear water coming out of is on a hot day with the a/c cranked up. and antifreeze indicates a bad heater core.

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โˆ™ 2006-04-01 20:39:38
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Q: What is the rubber elbow that comes out right beside the heater core on a quad four gm motor?
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