Underbody Coolant Leak on Dodge Grand Caravan

Coolant leaks coming from the underbody on vehicles equipped with rear heat/AC are common. The underbody hoses should be inspected as part of regular maintenance. If you drive on roads where salt is prevalent the problem is generally more severe. Some 2005 models are involved in a special service action, no government recall was issued.

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Average mileage: 110,153 (14,500–300,000)
13 model years affected: 1996, 1997, 2000, 2001, more2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
127 people reported this problem
73 people shared problem details
the rear heater hoses are leaking on the passenger side of my caravan i looked under an seen the problem. the two hoses that rout down from the fire wall are rusted mid way of the line. so if any one has some kind of solution that can be helpful . thanx
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If you are experiencing coolant leaking from under the body of your caravan, you need to address this, before you lose all your coolant and your stranded and need a tow that will cost a few hundred.... There are coolant pipes that run to the back heater. These pipes will rust out. I believe I paid around $100 for the replacement pipes which are made of stainless steal. They are tricking to install, becaus ethey run from the fire wall down and under the body to the rear heater. Keep an eye out for this, it is only a matter of time....
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Coolant leaks coming from the underbody on vehicles equipped with rear heat/AC . it is definitely coolant. how do you replace these coolant lines?
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metal tubes rotted at bracket. Cut out bad area and extended rubber hose
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The passenger side of my van gets extremely soaked after it rains or after running the A/C? It seems to be a more common problem the more I reaserch.
For several years now I smell hot coolant and several mechanics cannot find a leak. Coolant level does go down which confirms a leak and jives with the hot coolant smell. Noticed the metal pipe connected to the lower radiator hose is very rusted and corroded. Will look more into this area for the leak.
my car coolant is constantly loosing fluid changed hoses and clap but still loosing a little , say coolant line under right hand passenger door leaking coolant metal line corroded and wet also dripping about 1 drop per minute engine off . Chrysler or doge should replace these line w/ stainless steel or aluminium also the water pump inlet tube is also rusted and will eventuall fail .
pipes were pitted just before the aluminum heater hose. losing coolant once the temperature rises. waiting to be fix.
leaking coolant from faulty water pump, heat does not work, waiting for more trustworthy diagnosis, 605$ price break the bank
Rear heater pipes rusted out. Dealer replaced for $300.
I have lost coolant but didn't see where it was leaking. I had little heat from the heater. I added coolant and I now see a pool of fluid under the passenger side.
leaking from front passenger side from hose
Lost internal heat found leaks in lines under body
Leaking from the rear heating line. Dodge has a recall only for 2004-2005 models to replace with aluminium lines. Cost $600 to replace the all rear line system.
Hoses and pipes are fine. However the piece that the pipe connects to, there is a perfect circle shaped hole, and all of my fluid id pouring out of that hole. Is there a plug or something that is supposed to go there that may have come out?
No resolution
Hi my water is leaking in the back of my 2002 Dodge Grand Caravan underneath in the back while in park, and after using the air conditioner, what's going on, Thank You Robin Keys
Based on descriptions, that is what I have as well. Will have to take it in to have it repaired.
Same problem.
Underbody Coolant Leak
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