Code P0974, transmission not shifting properly?

Here are the shift solenoid locations and which one does what please check out the images below. I believe the shift solenoid A is S1.

36 - Automatic Transmission Fluid Temperature Sensor
62 - Automatic Transmission Output Speed Sensor
73 - Automatic Transmission Input Speed Sensor
75 - Transmission Control Module (TCM)
300 - 1-2, 2-3, Reverse, Shift Solenoid Valve Assembly (S3)
303 - 3-4, 4-5 Shift Solenoid Valve Assembly (S4)
305 - Reverse Shift Valve Solenoid (S5)
308 - 2-3, 3-4 Shift Solenoid Valve Assembly (S2)
310 - Reverse, 1st Shift Solenoid Valve Assembly (S1)
316 - Line Pressure Control Solenoid Valve Assembly (SLT)
339 - TCC Lock Up Pressure Control Solenoid Valve Assembly (SLU)
340 - Shift Pressure Control Solenoid Valve Assembly (SLS)

I have also included the transmission wiring diagrams so you can see how the transmission electrical works. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.