95 trans problem

[Budd y]

trans eill not shift out of 3 rd speed will manually shift 1 2&3 but no 4 th cleaned 6 pin connector at trans no change any help is greatful thanks buddy

 

[Budd y]

Trans tcm

What is the knob on the Tcm for it looks like an adjustment knob or something can anybody help me thanks buddy 96 rialta