Another flashing 4Lo Scenario

I've seen several posts on this issue but nothing exact. If I missed it my apologies.

07 SR5 . Like others I can make the light function properly but no where in my mind is that "FIXED' and am looking for advice or where to start looking maybe. I do all own work and I consider myself many years removed from ShadeTree abilities. You won't hurt my feelings so reply as you may..

My 4Lo light started coming on after heavy acceleration to pass slower vehicles a few weeks ago so I changed my driving habits. But this evening while returning to Brighton Co from Rapid City SD I lost my cool on SB 25 near my exit. I floored the gas pedal while traveling 75 and my blinker on for over 1/4 mile while Dbag next to me would not leave my rear quarterpanel and allow me to exit.
Vehicle downshifed and aforementioned light started flashing and didn't go out until I performed proper shifting sequence. Any info would be welcomed.

One more non repair question if I may.
Can anyone explain to me the reason for different colored fan cluch hubs . So far I've seen HOT PINK, Bright Blue and Green.

 

I can’t help with your problem but welcome to the forum.