Random Coolant Loss, need some info asap

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992dr

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Last week my wife was driving the Tahoe and noticed the "check gauges" lite came on. To make a long story short, he temp was running higher than normal. I left work thinking it was the temp sensor, reason being. When I had my headers installed, he broke the connector and I have to check it frequently to make sure its attatched. Well, that was not the problem. I ended up looking inside the radiator. I was rather surprised to see it was very low. I added some water and it was fine. I checked it a few days later and it needed more water. I asked my wife to let me knwo if she sees any spots on the driveway. Well, tonight she saw one.
I got under the Hoe and noticed coolant dripping from the bellhousing. The same place where oil was dripping before I put some Bar oil in.
I'm almost posotive I need a rear main seal.
Why would coolant be leaking from back there? Could it be the rear main seal?

Any and all info would be greatly appreciated.
Thank You
 

gpracer1

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I am already shuddering....hopefully the leak is coming from on top somewhere maybe by rear of the intake manifold. If it is not and it is coming from the bell housing, then it is most likely a freeze plug at the back of the block....I hope it isnt that.

Need to get on top of the engine with a flashlight and check the back from the top first.
 
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992dr

992dr

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Yeah, I'm more than shuddering right now. More like freaking out, hah.
I just came in from looking. The problem is, its pretty dirty. Old oil and crap. I see some wet spots but, not sure if its oil or coolant.
 

Freedom Motorsports

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Go to the auto parts store and get some dye to put in the oil first, then run the truck. Once that is done get back there and check to see if you can see dye anywhere. Then do the coolant the same way. That will tell you if and where you are losing either one, it may also show how bad things really are.
 
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992dr

992dr

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I'll stop at AutoZone tomorrow and do it when I get home.
How long does this take to work? Is this something that I'd need a black lite?


Thanks guys, I appreciate the help.
 

Freedom Motorsports

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Shouldn't have to run it long at all. I would say take it for a five minute drive so you can see it good wherever it is leaking.
 
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992dr

992dr

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"HaHa" Not to sound rude but, I cant really say thats a laughing matter.
And, thats what I'm afraid of :emotions122:


I wasnt able to do the dye tonight, an unfortunate insident with my daughter has put a damper on this. I am planning on dropping the trans this weekend. Ordered a freeze plug set as well as a new rear main seal.


Nice to meet you Sam, let us know what you find...

Same here man buddy, will do as soon an I getter done.
 

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