Jordan, what transmission does your truck have? Is it a 3-Speed with a column-mounted shifter? If so, you should find a couple of levers down at the end of the steering column that you should be able to access and manipulate just by raising the hood. If that unit is worn to where there is a little slop or play in the [censored] and you happen to let the clutch out without having the gearshift all the way into a gear it will hang up and you cannot move the gear shift.
