It is more than likely a fault with the shifter, especially since you can force it. Has there been anything spilled down into that area? The shifter is serviced as an assembly, and an indy shop would either purchase a part from a dealer(new) or a salvage yard(used). It should not require a special technician to replace the unit, so the choice is yours.
Thursday, January 27th, 2011 AT 3:54 AM