Antifreeze leaking with no overheating
- Thread starter rn4l21
- Start date
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Scottydoggs
Full Access Member
if thats under the firewall id think its a heater hose leaking.
00'BlueSteel
Full Access Member
Maybe one of the lines from the radiator to the rear hvac unit. The puddle in the photo does look a little far back to be water pump or any fitting up front.
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HiHoeSilver
Away!
Agreed. Check on those damn T fittings at the firewall.
yep it's mostly on the right side which is where the t-connectors are for the heater core and rear heat on the firewall
Coatwolf
Full Access Member
Part number for the T’s if u need them. Dorman 800-414 and 800-413. If you need the other part that comes off T it’s gates 28500
Coatwolf
Full Access Member
Head Gasket?.... Any coolant on your oil dip stick ---hope not...
A leak that bad is probably a hose, get under there with a flashlight and take a good look sometimes the hose will only leak under pressure, take it for a spin then get under it right away after
Coatwolf
Full Access Member
Yep. True. Mine would only leak after I shut the engine off. Very minimal amount.
It's hard to see, but look at the block right under your water pump. Common for the gaskets to start leaking or the pump itself to start weeping. Just did a water pump and ac compressor replacement in our '03 z71. Started as a slow leak, progressively got worse and would only leak once shut off and cooled down a bit.
My 97 Yukon is doing the same thing but only when I'm park on an incline which happens to be my driveway.‘01 Tahoe, 207K miles - The low coolant light came on so I let it sit while I ran and got some. Came back to this leak. No check engine light and no overheating. Any ideas what to check first?
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