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Jared D
Jared D, ASE Certified Technician
Category: Chevy
Satisfied Customers: 1862
Experience:  Shop Supervisor at County Fleet
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Overheating. Coolant leak, Unsure about the age of hoses.

Customer Question

Overheating. Coolant leak
JA: How old are the hoses? And have you tested the actual mix of your coolant?
Customer: Unsure about the age of hoses. Just checked the coolant level. It's very low. Can see fluid puddle under front passenger side.
JA: What is the model/year of your Chevy?
Customer: 2004
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: Haven't tried anything yet. Thinking of adding coolant myself
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 9 months ago.
Category: Chevy
Expert:  Jared D replied 9 months ago.


What model is your chevy?

Customer: replied 9 months ago.
2004 Tahoe
Expert:  Jared D replied 9 months ago.

How far back is the puddle on the passenger side? Near the engine or under the passenger seat?

Do you see any fluid inside the vehicle?

Customer: replied 9 months ago.
Near the engine. I see very little fluid inside the reservoir.
Expert:  Jared D replied 9 months ago.

On the passenger side of the engine the parts that can leak coolant are the heater hoses and a freeze plug.

Heater hoses will occasionally rupture and leak right near the firewall.

Freeze plugs are not nearly as likely to leak, but it's possible. They usually only corrode through if there has been very little coolant and too much water used in the cooling system.

Have you attempted to add coolant to the system to see if it runs back out somewhere?

Customer: replied 9 months ago.
I have not tried adding coolant yet. That was my next step. Is there a specific type of coolant that I should get? Or are they all the same?
Expert:  Jared D replied 9 months ago.

For the most part they are all the same or very similar these days. Your vehicle should use a DEXCOOL compatible coolant, but really any long life universal coolant will work. There's no need to pay extra for the fancy DEXCOOL brand name.

Customer: replied 9 months ago.
Great. Thanks for your help!
Expert:  Jared D replied 9 months ago.

Please let me know if you need additional info.

Expert:  Jared D replied 9 months ago.

I'd be happy to help identify the leaking part if you are able to see where it seems to be coming from after you add to it.

Customer: replied 9 months ago.
Great. I will get back to you on that.
Expert:  Jared D replied 9 months ago.

Sounds good.