/// Strong strange sweet smell within vehicle? ///
Yesterday upon entering my Enclave there was a very strong sweet smell. I thought it might have been a piece of fruit or dessert that fell somewhere and was rotting. However the temperature was -15℃ at the time so I highly doubted it, but began looking anyway and couldn't find anything.
After arriving home I found my Prestone pre-mixed antifreeze and smelled it. It sure seemed similar to the smell in the vehicle, but not a 100% match. I went back to my Enclave and searched all over for a leak within and out and found nothing. I looked in the container and it was low so I filled it, however I haven't filled it since last summer.
Today I still smelled it and took it to a mechanic so they could have a quick smell. He said it's most likely antifreeze, but he's not entirely sure. He said it could be the heater core so come back to get it hoisted and they will look.
There's no loss of heat, the windows don't fog up, and there's no visible leak anywhere.
In the summer when my air conditioning wasn't working the greatest I went under the glove compartment and took the fan apart and found a lot of water inside the bowl. I dumped it and put it back together then found the hose on the drivers side in behind the panel and pulled it out to empty the water in there as well. This helped the air conditioner work a bit better, but I still hear noises from in in the summer. Also, the fan that was once quiet under the glove compartment squeals a lot when the A/C or heater is on.
My questions are:
1) Why does the fan squeal so much now? Did I put it back properly causing the fan to squeal?
2) Why did the bowl and hose fill up with water in the summer?
3) Is the A/C and heater core connected?
4) Does this sound like an antifreeze leak or some other issue?
5)What is the estimated cost of a heater core problem?
My username is Skepticism because I was once skeptical about the Enclave and now think it's the most amazing vehicle I've ever owned. « 2008 CXL Cocoa Metallic (black leather) AWD with every option available and most importantly no wave-plate failure at 160,000km. Still going strong for 2017! »