My problem sounds very similar to the other complaints on this site. At first, my heat decided to stop working and it would only work if I added more DEX-COOL. It seemed that I had to do this pretty often, almost a few times a week. Now my car has been having issues starting, the engine will not hold acceleration and I get no RPMs. I can only get the engine to rev if I pump the gas pedal, but it won't hold. I brought the vehicle to a repair shop, and they stated that this is a common problem with these models. There was also a knocking in the engine, almost exclusively on cold mornings. That problem is now gone, and after two visits to the shop the other problem still exists. I was told by a random stranger about possible issues with the transmission and the gasket leaking coolant into the engine. I would like to find out if anyone else had their repairs completed, and if they were covered by any type of service recall, as it sounds as if these issues are common. I would appreciate any info or insight into this matter. Thank you!!! --pissed off at my pontiac