My 05 Vibe started to really shake in the steering wheel at speeds of 80 km and up. Someone told me it could be ice and snow in the wheels. I had been almost stuck in deep snow recently so I thought maybe so. On Saturday I got a car wash with underspray, it didnt go away. I went to my dealer for an oil change (I knew I couldn't get an appointment that day) and asked the lube guy to look for ice while he was underneath. He said he saw nothing, so I made an appointment for Monday. The service guy said if it was wheel balancing it wouldn't be covered by warranty, but other things would be. Driving home it was still shaking the same way.
Then today, Sunday, the shaking was gone, even up to 120 km. How could the problem fix itself? I cancelled the appointment, but is there anything I still should look out for, or have it looked at anyway?