Antifreeze is leaking from passenger side behind rear wheel. What the hell? on 1997 Chevrolet Suburban 1500

I'm guessing that there are coolant lines going back to for the rear heating, how do I get to them? Thank you-Alan

Asked by for the 1997 Chevrolet Suburban 1500
Also, you can block them off, under the hood, until you get time to fix it. IF necessary.
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you are correct.pull inside panel and insp try for info