ok guys. i havent been around the forums in some time due to work and the holidays.
i started a swap several months back. a 1995 lt1/4l60e into a 90 camaro rs.
the swap was completed except for some transmission issued to iron out,
i think i have this issue whipped now however, im just asking for some advice here.
the car felt like it was stuck in third gear when you would start it, i dont have tags on the car so i couldnt test drive it, knowing my luck i would get caught . these are the tests i have tried.
i know the 4l60e works off a ground issued from the ecu to the solenoid.
TEST 1: took my digital volt meter and clamped it to the B+ batter terminal with the ignition switch on, took my other meter lead and touched the A terminal on the transmission connector, i registered .1 volts. i then touched the B terminal on the transmission connector, registered .1 volts. i said hell i dont see a ground here... so i then gently touched the ecu housing. now im showing 13.5 volts from the ecu housing to the B+ battery terminal.
this told me the ecu is not sending a ground to the transmission.
TEST 2: i took a wire and jumped the transmission connector A terminal to a ground, i heard a click from under the car. i then touched the B terminal with a ground. i heard another click. this made me believe the solenoids are pulling in. so then i crawled under the transmission pan and had a friend ground them out. i heard them click.
my question is. whats the issue here? the ecu transmission driver or perhaps a ground lose somewhere? the ecu its self is grounded and im pretty sure all grounds are intact.
thanks guys

 

You need the computer in its entirety to make this work correctly.