Hiss- Uh Oh- big problem...

[CorvetteOJ]

YES! I have had my H3 for nine months and about three months ago, with only 2000 miles on it, mine developed a "cold coolant leak" as stated by the dealer. Mine never leaked inside, but after I shut it off, there would be a hugh puddle of coolant under it. I called my dealer (100 miles away) and he told me immediately what it was. He said he would send a flatbed after it and send the local Enterprise Rental agency to pick me up and get me into another Hummer or Cadillac. He did both exactly as he said he would. I am 60 years old and have owned 62 cars in my lifetime and have never experienced that kind of service from a dealer.

The problem was the heater core. They also removed all my dash and some of the right front fender liner to access it. The greatest miracle of all, when they put it all back together, everything still worked and there were absolutely no noises or rattles anywhere.

Yes, I too was shocked to hear that a heater core was bad so early in its life. At least mine was leaking on the ground and not in the interior. That is my "heater core story."

[cestwick]

We have had a couple of cores done at our dealership too..not a very fun job..