New gov soloniod,transducer. No 1st gear!

[BHowayeck]

So im trying to fix my flutter shift under lite throttle issue. I got my new parts in, topped off the fluid and done. I had 1st gear once and then it went away. Did I miss something? The truck is stock. I could put the old parts back in but... Thanks. (04 2wd not in sig)

 

[TCDiesel]

If for some reason they is NO power to the Gov/Lockup/OD solenoids it will start in 3rd gear,Check connections ,fuses #5, relay#50 . The shutter is common and is in most cases cause by the the rear axle or drive line.