Yo Crosley

[48 Suburban]

I gotta a quick tranny question for you. My 72 suburban is set up to lock up in 3rd and 4th.  I drive around town in third. Here lately when I stop it fells like the conv isnt unlocking and will stall the engine. I t has the vacumn switch and is hooked to the brakes switch. It performed flawlessly for 20000 miles. Would you think that it would be a solenoid problem or would be in the control side. I doesnt do this in OD. I cant think of a component in the control that would only be used in 3rd, and it has been to long since tranny rebuild in school to remember about the internals Thanks 48 suburban :?:

[48 Suburban]

Is this a 700r4 tranny?

It should not stall the engine when stopping. There is no oil pressure supplied for lockup in first gear.

IF you remove the voltage feed to the tranny is the problem still there?

Yes it is a 700. I havent tried that yet ,  that is next on my plans. I figured you could point in the right direction, I alway like to listen to some one with more exp, you might just pick up a juicy tidbit thanks   Jay