I've got 54k and, same as you, the coolant level in the resevoir is a little low but not going anywhere too fast.

Well one thing that scared me was when I bought the car. I had heard about the UIM problems a few days after getting it. I think I did a google search, and basically was what brought me here to this site. Right after reading about it, I went out to my car to check the coolant level. With a cold car, the reservoir was EMPTY, and I popped the cap on the radiator, and could see it was wet, but couldn't see the coolant!

Right after that, I took it to my mechanic and said PUT IN PRESTONE IMMEDIATELY. They did 2 full flushes, and they said it was clean then. Put in Prestone and have hardly lost a drop since. I asked my mechanic, why the missing coolant then, but not now. He told me that it was possibly due to the Prestone having a higher viscocity than the Death-Cool. I don't know how much truth there is in that, but was still happy to have good old Prestone back in my car.

So, that'* why I have been watching it semi-religiously since I got the car 2 years ago. I'm not sure where the coolant went to, but haven't had a problem since.

So far, it sounds like that the LIM gasket is more of a problem than the UIM itself on the '00+'*. Is that right? Is the LIM gasket as big of a problem with the L36'* as the L67'*?

BillBoost37 wrote

Why did they not make this standard out of the factory?

Who knows. They probably wanted to save money, as the old design is cheaper, I imagine. Plus then people would still bring their car to the dealer to get fixed when the old crap style finally dies.

As far as we know the new style gasket just came out last year (2005).

Are people who change DexCool out every two years having trouble with LIM on 2000+? I had the new bolts put on the throttle body in the recall. They added the pellets of walnut shells or whatever it is.

I add the GM pellets, 2 of them, when I changed out the Dexcool. Now I'm ready to do it again this spring. I'll add 2 more just to keep any leaks that naturally occur or don't naturally occur from opening up into something that'* a problem.

I thought the UIM problem was fixed. But people here are saying 80-100K some cars are developing problems? Had those cars had the DexCool changed regularly?

A friend of mines justt failed at 59k miles. I'd say you're good to go for now, you seem to know your stuff. Keep an eye on that coolant, and maybe getting the dex-cool flushed out for the green stuff would be a good idea. Otherwise just wait in anticipation lol.

That'* the whole damn problem... lol

JUST DIE ALREADY SO I CAN FIX YOU AND FORGET ABOUT YOU FOR A WHILE!!!