2001 Cadillac Deville Coolant Leaking Underneath

Tiny
STARKS2020
  • MEMBER
  • 2001 CADILLAC DEVILLE
Engine Cooling problem
2001 Cadillac Deville V8 Two Wheel Drive Automatic

I had coolant leaking underneath my car. The coolant reservoir was emptied so I refilled it and drove it into a Car Center. They took an hour to test and inspect my vehicle and came back with an estimate of $1,300. They said I needed a new water pump, water pump housing, several hoses and gaskets needed replacing, new thermosat and coolant flush.
(Did I mention I was a woman). I told them to top off the coolant and I declined the repairs. I drove home expecting to have to add coolant again when I got home. I got out and looked underneath and my coolant was no longer leaking. In fact, My coolant reservoir was still full. So it had not leaked, whereas it leaked rapidly before. I noticed that the hose from the reservoir was now connected, whereas it had not been before. Could my only problem have been the outlet hose was not connected or should I take my car into another Car Center for diagnostic? It has not once ran hot.
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Monday, February 1st, 2010 AT 2:11 PM

6 Replies

Tiny
FACTORYJACK
  • EXPERT
It is possible that it will leak more cold, when metals are contracted. It can be leaking from the water pump cover, or the water pump housing, both common on this year. You don't need the coolant flush, you would be having the system completely drained for your repairs. The outlet hose was probably just to direct overfill.
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Monday, February 1st, 2010 AT 11:58 PM
Tiny
STARKS2020
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Thanks for the quick reply.
It is no longer leaking, cold or hot. I've checked for the past 2 days. Could it have just been a loose hose? Should I still be concerned?
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Wednesday, February 3rd, 2010 AT 9:22 PM
Tiny
FACTORYJACK
  • EXPERT
It could have been a loose hose, but like I say, the hose your talking about that was off the reservoir was probably just an overfill tube. More than likely, all your hoses have spring type clamps, at least it did from the factory. It could be a slow enough leak that it could evaporate or burn off while driving. You should still be aware of the possibility, not necessarily concerned or worried, unless it progresses. Just keep an eye on the level. You also have a coolant level sensor in the reservoir that will notify you via the drivers info center, when the level gets low.
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Wednesday, February 3rd, 2010 AT 11:19 PM
Tiny
MRDB
  • MEMBER
None of those answered my question
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Saturday, December 24th, 2016 AT 7:36 PM
Tiny
MRDB
  • MEMBER
My 2000 cadillac dts is leaking coolant from the bottom or back of engine what is the problem
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Saturday, December 24th, 2016 AT 7:39 PM
Tiny
CARADIODOC
  • EXPERT
Of course they didn't apply to your car. You're piggybacking on someone elses question from many years ago. That was a conversation between two people. You need to start your own question so all the experts will have a chance to see it and reply, then it too will become a conversation between you and one other person.

You wouldn't walk up to the service writer in a shop and tell them, the repairs to the last person's car didn't solve my problem. You need to start your own question and include as much detail as possible. Include your car model and year, and especially the engine size. It's also helpful to include any related history leading up to the problem, and clues or observations, so we don't have to waste time asking. With GM cars, also tell us if you've failed to have the coolant replaced every two years. If that is the case, expect a lot of leaks due to corroded metal parts. Leaking heater cores are real common.
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Sunday, December 25th, 2016 AT 12:12 PM

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