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Old 11-08-2006, 12:15 AM   #1
1985K10
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Join Date: Oct 2003
Location: CT
Posts: 315
700R4 Lockup?

I'm trying to get my 87GMC ready for the road, and just found the lockup harness was disconnected from the tranny. I'd like to test out the circuit to see if the TC is gonna lockup when I get the thing on the road, so is it possible to get the 12v signal while parked and idleing, or do I need to be moving and over a certain speed to get the "lockup" signal?

Thanks!
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07 Tahoe LT
70 Chevelle 450HP 383-TH400
77 GMC Royal Sierra~Resto in progress~
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