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lock up or not?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by JunkYardCrawler, Mar 30, 2002.

  1. JunkYardCrawler

    JunkYardCrawler 1/2 ton status

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    Tucson, AZ
    i don't know how to tell if my 700R4 is a lock up or not. how can i tell?
     
  2. DesertDueler

    DesertDueler 1/2 ton status

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    There should be the vac. control for the lockup on the pass side of the firewall. Its a little piece of plastic with a vacuum line going to it.
     
  3. RedDwarf

    RedDwarf 1/2 ton status

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    Location:
    North Central Florida
    All 700R-4 trannies are lockup.

    If the lockup fails and you continue to load the trans in OD, the OD will roast becuase the pump is not supplying enough pressure.
     

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