Voytek

Hey guys. I have a 05 cts-v. It's got the LS6.

Last night was driving around and car started leaking coolant.

Seems like its coming out of the bottom of the radiator but not quite sure.

Any problematic spots with these setups that I should check before taking it to the shop? Loose hoses?

Thanks.

El original

Sorry cant help you, this is a Corvette forum. No issues with coolant leaks around radiators or anywhere else on Corvettes. Best take it in to your dealer. It probably is just a hose failure or as you mentioned a clamp.. Good luck.

dbstephens

I have just went through this troubleshooting process with or 2001. The car would smell like antifreeze when it was pulled into the garage when hot. Left overnight, there might be a very small puddle of antifreeze below the coolant recovery tank and the radiator drain valve.

I could not see any liquid dripping or leaking when the car was running in the garage.

While away from home, the wife approached the car and saw a large amount of antifreeze underneath. We had it towed home and saw what had been causing the problem.

The "T" connection at the bottom of the coolant recovery tank had fractured and had been leaking just enough to create a smell of antifreeze for quite some time. It finally broke loose an spilled the reservior's fluid.

The plastic on our cars will become brittle with time and is subject to cracking and breaking. (just take your dash trim apart on a 10-year old car and watch the plastic break).

A new recovery tank, hoses, clamps, flush and fill resolved all of our problems with the slight leak and smell.

Good luck!

dgrant3830

The only way you'll know is to trace to the source.

Vetteman Jack

Best to just get under the car and take a look and see if you can tell exactly where the coolant is coming from. You may have to do a pressure test and see if the leak becomes visible.

Jesse Asis

Also check your over flow coolent tank, the input nipple cracks and it leaks from there. Mine did and was spraying on the exhaust manifolds, I really got the smell of coolent steam, but found it fast after a nice hot ride.

The sell a dye that you can put in your coolent and use a BLACK LIGHT to look for the leak. Good luck.

corvettezman

If it's coming from the side, it's more than likely a coolant tank issue. If it's coming from the middle of the radiator, you can almost bet it's a water pump that's gone south.
If it's not that obvious, I would do as recommended before, a pressure test.

madmatt9471

Once it is HOT drive up on some ramps or jack it up in the front, shut it off so the system is under pressure -

Grab a good bright flashlight and starting at the top search out the coolant leak! if it is a tank then it is best to replace it, fins can be soldered, could have a rock chip in it, if it is a clamp try to tighten it and go from there -

They are a pretty easy and straight forward replacement/swap out!

Thanks,Matt