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I have a 98 gmc jimmy. And today I noticed it was leaking coolant. I found the source and it looks like a hose hanging down from the resevoir is not connected to anything. Is it supposed to be connected to something or am I missing something

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There is a hose from the radiator, by the cap, going to the
bottom of the overflow or expansion tank, as you were
referring to

Posted on May 10, 2014


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SOURCE: coolant leak from left side of engine block running down oil pan.

when you say left side are we talking passanger side or drivers side if drivers side which is my guess most likely your waterpump seal is leaking

Posted on Mar 22, 2009

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SOURCE: Coolant leak That can't be found

The leak can be from a number of places. The radiator may be leaking, a freeze out plug on the block, a crack in the block, the head gasket, etc. The only way to figure it out is to carefully check under and above the engine. You can purchase a small mirror with an extending handle to view the difficult tight areas (available at most auto parts stores). The reservoir can even have a split in it where it's difficult to see, like in the bottom, or up against the fender. Check the hose from the bottle also. So pick up a mirror, and start your detective work. Since it leaks so quickly, it should be pretty easy to track down. When you go under the car, make sure wheels are blocked, and car is on safety stands. Good luck, let me know what you find.

Posted on Apr 18, 2009

old marine
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SOURCE: 2000 chevy cavalier having coolant leak. Found a

That hose is the drain hose for the air conditioner evaporator. If it is leaking coolant, there's a good chance that your heater core is leaking, as it is in the same 'box' that the air conditioner evaporator is in. You'll need to replace the heater core.

Posted on Apr 24, 2009

  • 62 Answers

SOURCE: 2000 GMC Sierra leaking coolant

sounds like your water pump is probably leaking but do a quick look above to make sure its not leaking down from above

water pumps arnt that hard to do you will have to loosten the belt and probably remove the fan\
just get your self a repair manuall

Posted on May 14, 2009

  • 3051 Answers

SOURCE: My engine was running hot so I replaced the

Hello there
no this hose that hangs there is a overflow tube and it is meant to drain out any excessive fluid that the tank cannot hold that is why when you fill up the tank only fill it up to the full line on a cold engine or just a half inch below this line on a warm engine and let the car run untill the temoperature is up to operating levels and check the level in the tank again and add if needed ok?
Rermber that water will expand when it gets hot and if the tank is all ready past the full mark it will overflow into the tube that hangs down from the side.
Hope that this is very helpful for you
best regards michael

Posted on Oct 25, 2009

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Dear Stacy.
I am hoping you have not damaged your engine, but from your short discourse, it seems not.
The most likely problem would be a broken radiator hose.
Put your car up in the air and look underneath, you should find the hole in a hose.
The leaking hose could either be a radiator hose, or a heater hose.
.If they have never been changed, now is a good time to do so, especially if the ones on your car are original.
If the hose is not readily apparent, you could add water and start the motor, but be prepared to shut it off immediately when the source of the leak is found.
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