Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by JunkYardCrawler, Mar 30, 2002.
i don't know how to tell if my 700R4 is a lock up or not. how can i tell?
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.
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.
Separate names with a comma.