Question about Thule 2001 GMC Yukon - SLT, with factory roof rails - Base Rack System

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I have a anti freeze leak in the back of my engine and it dont look like its coming from the rear freeze plug. Now what?

Could it be a head gasket leak just below the freeze plug and not a freeze plug? Since I do not see any leak from the rear freeze plug.

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Mazda 6 leaking anti freeze steam coming out of right side of engine

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Leaking small amounts of anti-freeze, I have to top it off every 2 weeks, maybe 4 oz. I had new tires installed this week and asked the mechanic to look for leaks. He found no issues with any hoses or the...

Most likely a frost plug, you may need a mirror to see it.
The head is not likely to just leak from the back, check for steam from the exhaust when hot.

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I have a 1999 plymouth voyager 3.3 liter van that is leaking antifreeze. I assumed it was probably in one of the hoses. When I got underneath to investigate it seems to be leaking from the rear of the...

I am assuming by anti freeze you mean the radiator coolant.

If it is leaking from the rear of the engine then it is very likey a few of the welch plugs are leaking due to rust.

You need to replace them. Hopefully it is not the engine head gasket which can cost a lot to replace.

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If there is no anti freeze in the lower engine or transmission , then the oil is leaking from a high pressure oil line going to the head to the cooling chambers filled with anti freeze. This means you probably need to replace your head gasket on the motor. While you have the head off check to make sure that the head has not warped. If it is warped it may have to be machined back to flat or replaced.

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I have seen a couple of these now with headgasket leaks to the outside of the block just as you describe. I solved them both with a stop-leak additive, not something I would normally use, but I really didn't want to pull the heads because the exhaust studs always break on these engines. I would find out for sure where the leak is before proceeding though. If it's a hose or frost plug, you'll have to repair it properly.

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