It might just be the shifter interlock not allowing it to go into gear all the way. Otherwise I think there might be something loose in the shifter linkage at the shifter or at the transmission.
I am attaching some diagnostic information as well as the wiring diagram. The solenoid for the system may be intermitantly failing.
It is hard to estimate the price as I don't know how hard it is to get to solenoid. I would suspect 4 hours of labor, rate depends on shop, if labor is $75 that would be $300.00 in labor and a solenoid migh be $80.00 at the most.
Images (Click to enlarge)
Tuesday, December 18th, 2012 AT 1:50 AM