Hey Scotty! I have an '04 trailblazer. During the middle of a severe cold snap the transmission started slipping so bad that I had to get it towed. Its sitting in my driveway now. Now that it has warmed up, when I put it in drive, it starts to pull forward. When I put it in reverse, it starts to pull it backwards, but I'm too scared to try to actually drive it. A local mechanic said that I need a transmission overhaul. What are your thoughts?