This morning I parked my '91 and left it idling in park and went next door to get a cup of coffee. While I was getting coffee, the truck jumped out of gear into reverse and backed out from the parking space it was in 180 degrees and backed into a 10 by 10 walkway post at a bed and breakfast place and smashed the post in half. Can't believe that the truck did not take out a few cars, people etc. Even better, no damage to truck thanks to tow hitch receiver! Boy, was I lucky! My linkage bushings are worn and sloppy which I think created this situation. Anyone else experience this problem? I hope not!