Got an 06 equinox LT awd. One morning went to start it and about 4 blocks into my trip It started making a sound I can best describe as a rubbing/grinding/whining type of noise from the rear end. I put it into park and noticed it start to roll backwards so I engaged the E brake. The noise seems to stop when it's in park but in drive it's incredibly loud. I'm still able to reverse and still go forward in drive. My friend go underneath of it and said my driveshaft was spinning but couldn't diagnose anything for me. Where the heck do I even start with this problem??? He mentioned the possibility of making it a front wheel drive vehicle by doing something to it but I was too stressed out to really comprehend everything he was telling me.