I don't know if anyone else is hearing this noise, but when I first get into my Enclave and drive off, within the first minute, I hear a soft clunking noise near my feet. It doesn't last long (maybe 2-3 seconds) and then goes away. And it only happens when I first start driving. I've tried to pay attention each time I get going after I have parked the car, and I'm pretty sure everytime, this noise happens. I have about 500 miles and am wondering if I should bring it in.