I just did an oil change for the year on my 2010 RT with the semi-automatic. Changed both the oil filter and the transmission filter, started it up and have no leaks. I let it warm up, put it in reverse, backed out of the drive and shifted into 1st. Went through 1st and 2nd but when I tried to shift out of 3rd, no shift. I slowed, it shifted back down and again I went up to 3rd but it wouldn't shift into 4th. First time I've ever had this happen.

So, before I take it to the dealer, I'd like to know if anyone has had the problem or knows of a solution. It's thrown no codes, by the way. I have a little over 20,000 miles on it.

Thanks.