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#58 blue is typically green and it's the serial data line from the obd2 connector under the dash board.
#50 red is a green/wt vehicle speed sensor
#59 blue is not connected anywhere I have seen before
#49 Red is not used anywhere
#48 blue is MAP sensor 5V reference signal
Are you sure this is a truck harness from a 2000? The pinout above don't match a 2000 PCM in many spots for some reason. Did someone repin this thing?
go to this website for LS1 wiring harness diagrams and further information.
http://ls1tech.com/forums/showthread.php?t...002+pcm+pin+out
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Purple and the yellow wire are coming from the tail shaft of the tranny .
Where do I hook them up.
VSS out to speedo? The 4K right?
It may be 1999 wiring. Im just going by what I was told.
