Hi,
I have captivated Van G20 4.3L VORTEC engine and transmission of the Trail Blazer) 2005-2008) 4L60, new engine and new transmission, is connected to ECM black as the blazer in 1996, the problem is the transmission acts as if she does not get voltage (12V ) I checked and connected wire (+) direct to transmission and the problem is not solved, the problems are that the car as if starting the trip gear 4, there banging between shifting and no kik down, only if I remove the handle transmission gear to 1 his start the trip gear 1, but it does not happen all the time and sometimes travel Standard and chalk works great, anyone have an idea?