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Thread: Tahoe Leaking Coolant
12-05-2012, 09:46 PM #1
Tahoe Leaking Coolant
Ok, so after having my plugs done the shop noticed over night the truck made a stain on the floor of coolant. They said it my be the radiator ot the lower hose. Tomorrow I will investigate it further.
Any who I may need a new radiator and hoses. I will also replace the thermometer, radiator cap and coolant temp sensor because they are being crazy going from 170-210+ within seconds back and forth. I also will install my block heater and do a full coolant flush to get rid of deposits that would effect the heater or new parts. I then will refill with Prestone Dex-Cool mixing the 50/50 ratio my self.
The leak only happens after the truck is turned off because it drips when the radiator is under pressure. Once pressure is loss the coolant stops leaking.
If any one has any pointers or idea please help out. Also even tho I dont belive in stop leak I might use it to get through the next few month any suggestions on what works and is safe after using it your self.
1996 Chevy Tahoe LT 5.7L V8 4X4 205,000+ miles. Built proudly at Janesville Assembly in Janesville, Wisconsin
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12-05-2012, 10:25 PM #2
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I wouldn't use stop leak to get home. The wrecker would cost less in the long run!
First thing is to get down ther and see where it is leaking. Without knowing that there is no way to help out on this... Coolant can leak from ANYWHERE!"It went together didn't it? Well then there has to be a way to take it apart!" - Me.
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12-05-2012, 10:46 PM #3
You might get lucky on this one. I know that you could use a break. If it has the original clamps, it might just be a clamp.
1995 Silverado 4x4
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12-06-2012, 10:22 AM #4
Yup, if it's a hose or a clamp it's a cheap and quick fix. If it's the radiator, itself, it'll cost more but still isn't a huge outlay of cash or time.
Last edited by SurrealOne; 12-06-2012 at 08:49 PM.
12-06-2012, 12:48 PM #5
What ever it is, you should hope that it is not a radiator, cuz that would be about 200 maybe more, cuz i think mine was about 200 when i hit my deer. But if it is hoses your in the clear, and if you havent drove it home yet, i would suggest just getting a couple gallons of water, and that should get you home with out using stop leak, but the thing is you would have to stop every once in a while and put more in probably.1994 GMC Yukon, 2 door, Victory Red
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12-06-2012, 12:55 PM #6
Conlan, as you already know it is way to cold where you live to run straight water. you would have to put coolant in it and run it long enough to get it into the block before night fall. I am sure that you have gotten it home already though
12-06-2012, 02:15 PM #7
It is the radiator.. Well from what I can tell. Coolant is cheap I always keep extra in the truck and keep the reservoir topped off. Radiator for my truck is only about 100 on amazon. Then its another 90 for the other replacement parts. Will need to buy coolant at 16 per gal of full strength. I would never run water in the truck its an iron block it would destroy it with in days.
12-06-2012, 02:32 PM #8
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12-06-2012, 03:24 PM #9
Not only is this convenient, you are only using 1/2 of the coolant, and mixed 1:1, you are getting the best protection.Ray
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'05 Envoy XL (sold)
12-06-2012, 04:52 PM #10
The stuff for emergencies is premixed, The stuff I will put in after replacing will be full strength that I will mix prior to install.
I will post pics I took maybe you guys will see something I don't. The hoses look great and feel strong, but after 18 years I don't think new ones will hurt.
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