The shifter cable is broken or frayed, or it is disconnected on one end. I just had this same question last week, and they found it was disconnected at the transmission. Given that it acted up slowly, meaning at first it still moved but not far enough, it isn't likely it's disconnected. Rather, if the cable is not frayed and coming apart, look at where the housing is attached to see if that is loose. It takes a lot of effort to push the shifter lever on the transmission, so if the housing anchor is loose, that would slide back and forth instead of moving the shift lever. Have a helper work the shifter inside the vehicle while you watch at the transmission. (By "housing", I mean the casing around the cable).
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Sunday, September 21st, 2014 AT 10:45 PM