Question about 1999 GMC Safari

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Rear heater line is gone in van. How can I cap this line? The antifreeze runs right out the line as I put it in the rad. The rear heater is in the off position.

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You'll have to rejoin or replace the rear heater core line that leads to the rear from the front if it's leaking like described.

One might be able to use a section of rubber hose with clamps, if the two ends are flared with a tool, hoping that the pressure won't make it leak at these two joints.

Or, as suggested in the question, one might cap the line, disabling the rear heater. Check with your local auto parts store for a rubber cap that can block the end. Maybe try a place like Lowe's which stocks a wide variety of plastic, rubber, and metal plumbing supplies that might be helpful.

Posted on Dec 31, 2010

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If this is a rubber heater hose, find something that will fit snugly into the end of the hose(a large bolt or an old spark plug), clamp the end of the hose with a small hose clamp and check for leakage. Should be good to go.

Posted on Dec 31, 2010

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