F SUPER DUTY/460/AUTO

[LOVEMYTRUCK]

HI,I was going to start on trany but ran into small problem our parts house was telling me they have solenoid interlock,but there is supposed to
be a shift solenoid on trany can someone verify this for will keep looking
on internet because when i was talking to parts house it sounded like we
were talking apples and oranges.
What happens is it feels like goes into neutral between 1st and 2nd gear
then it comes back to working again this does not happen all the time as it
has not happened for quite awhile,thanks