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lock up conveter??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by efilnikufecin, Jul 24, 2002.

  1. efilnikufecin

    efilnikufecin 1/2 ton status

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    how do you rewire a 4L60 so i can manually lock up the converter.anyone got some prints?
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    For one, I believe shorting ALDL pins A and F should do it. (if this is your '91 you speak of) (top pin in the upper left and right corner of the connector I believe)

    You could always put in a toggle switch that wasn't hard wired in that way too....there is a website out there (try searching for ray buck chevy asylum) on yahoo, and check it out. Theres a write up or diagram of how to wire it there I believe.

    Why would you want to manually lock it in your '91?
     
  3. 84_Chevy_K10

    84_Chevy_K10 Banned

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  4. efilnikufecin

    efilnikufecin 1/2 ton status

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    trying to see if i can get any compression braking out of it for decents.i also would like to lock it in on the express way so it don't keep locking and unlocking.
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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    Easy enough to test the compression braking idea with the shorting of the two ALDL pins. That method works (as long as the trucks use the same ALDL wiring as every other GM vehicle that used that connector until '91 or later) as I've done it myself.

    I guess it would be kind of hard to do while your driving though on the trucks. That ALDL connector is in an odd spot if you ask me...great for using a scantool on, bad for trying to watch voltage or short pins to test.
     
  6. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    Maybe if he has any small children, they could sit on the floor and run the ALDL, haha.
     

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