I searched this topic but couldn't find anything on point. When I shift into reverse, the transmission makes a thud and the vehicle jerks in reverse. Once in drive, the transmission will not shift out of what I believe is second gear. I took the vehicle to an independent shop and they say the error code suggests a problem with the valve body. Can someone post the parts manual that shows the valve body and offer any advice on what a fix could be? I asked about flushing the transmission and the SA indicated he didn't think that would make a difference because the transmission fluid is rated for life. He asked for a few more minutes to see what code it throws once cleared, but he somewhat ominously stated it was a very expensive repair. Any insight would be appreciated for when he calls back.