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I have a 700R4 transmission from a mid-eighties suburban.
I want to put the 700R4 in my 81 gmc, but the wires don't match up. Currently I have 2 wires to my tranny but the 700R4 has more wires. how should I proceed?
bought an '85 k10 scottsdale a year ago. seller said the tranny was freshly rebuilt.
I took the next year rebuilding the engine, ignition, carb., intake, etc.
Finally got her running and drove her to the exhaust shop to have the new pipes welded up. When I drove her away from the shop, the speedo didn't work. No big deal, I thought... probably just the sensor got disconnected while the welder was under the belly or at worst, faulty.
a dozen miles later, the tranny "slips" to 1st gear when should be shifting from 2nd to 3rd and in 1st it stays. If I run it in 2nd... no problems.
I checked the fluid for the first time since buying (about 100 miles tops)... bone dry. I have added fluid... but no difference.
So before I buy a new tranny... any thoughts, ideas, or suggestions?
Thanks for your expertise.