I have the same problem on my 2006 trajet. It is automatic and seems to be internal. From my POV, it seems to be shifted, but when I try to back up, nothing happens. Sometimes it will snap into place which is rather rough. Other times I just notice that I am not moving and have, to shift back to park and then try again to shift into reverse. Very frustrating! And I cannot find a rhyme or reason as to why it happens sometimes and not at other times.
Saturday, April 28th, 2012 AT 1:05 PM