Water Leak

[obermd]

Update on my coolant leak. After a little over 900 miles I checked coolant tank. The level has dropped from the top of the arrow to the middle of the arrow. This should be sufficient to show under a black light. I have an appointment to take it in tomorrow morning.

[mike505]

Mine has dropped about the same amount since we left North Carolina. Took it to the dealer for my 8 am appt. this morning. At 1:15 when I had to leave to go get my kids they hadn't looked at it yet. Said they were backed up from being a person down yesterday. I have a loaner(2003 Buick) and will hopefully know more tomorrow.

[obermd]

My ECO was pressure tested for most of the day. Nothing found. More waiting and watching on my part.

As a side note, the dealership did tighten a loose body panel.

[Jim Frye]

My ECO was pressure tested for most of the day. Nothing found. More waiting and watching on my part.

So, did they go over it with a black light? Did they pull the plugs and look at them with the light? How about the tail pipe?

[obermd]

So, did they go over it with a black light? Did they pull the plugs and look at them with the light? How about the tail pipe?

Unknown.

[mike505]

They must have done something this afternoon. Just checked the Onstar app on my phone. Air pressure is different. It was a little low and is now up at 35 all the way around. Locked the doors too just in case it was outside.

[Sunline Fan]

Here's my current coolant level, at just over 3400 miles. I didn't think to check it when it was brand new, but I think it has dropped from what it originally was.
photo (1).jpg

[mike505]

Should be full to the arrow. Being new it wouldn't surprise me to see a slight variance but I would at the very least watch it closely. If it makes you nervous take it in to be checked. Ours was dry and the day after I filled it dry again. Ours has dropped from the arrow to just above yours in 650 miles on the trip home.

[Sunline Fan]

Should be full to the arrow. Being new it wouldn't surprise me to see a slight variance but I would at the very least watch it closely. If it makes you nervous take it in to be checked. Ours was dry and the day after I filled it dry again. Ours has dropped from the arrow to just above yours in 650 miles on the trip home.

Since the dealer is open late tomorrow night, I think I might stop on my way home to see if they have some I can top it up with. I'll let warranty pay for it if it's just going to leak out again. Then I'll have a good baseline to match it up with.

I noticed it looked low when I had the battery disconnected for something almost 1000 miles ago. I don't think it's dropped much since then. I have to say, the arrow is a little hard to see tucked behind stuff like that.

[mike505]

They called to tell me they had it under pressure all night and it never dropped. So they say it's not leaking anywhere. Their suggestion at this point was we need to keep an eye on it. The only thing the service manager could think was such a slight leak that wouldn't show up was a head gasket but there is no evidence of it.