Shifter Detent

[xdfarrx]

I think Tone pretty clear as what he said. The tranny is going to do less shifting in third, as the torque converter as well, subsequently being easier on the tranny... and use the power button which also tightens shifting. Do search for further explanation on this topic...

[cascabel3]

It goes from N-D-3 with out having to press the button because there is no damage if you do so at any speed. Going from 3 to 2 however could cause damage at higher speeds, hence it is locked in the two lowest gears, and reverse. This set-up is pretty much standard for 4 speed auto trannies.