My brand new 09 LTZ 4cyl auto w/ 2K miles is doing something that I have never experienced. Yesturday caused me a panic attack. On 3 diffrent occassions I would press the gas and my BU would not go. Yesturday I took off in front of oncoming traffic and sure enough I pressed the gas while in "D" and no go. Here comes the traffic, expecting me to take off and the only thing my car registered was 4000 rpms Thats right, the engine was rev'n but the trans was not. I pulled up on the gas and tried again hoping to not get side swiped. This time the car went to about 3000 rpms and then jolted the tranny. I avoided a potential pile up and will take her in tomorrow. The dealer said wow, we will have to take it for a test ride and I told me good luck of trying to repeat it. It has only happened 3 times and no engine light? Do any of the very smart people here, have some idea of what is going on???