4L80E connector wiring question
#1
4L80E connector wiring question
Hi everyone I bought a 2002 lq4 with a wiring harness from a wrecker but the transmission harness was cut and missing the connector. I bought a 2001 4L80E and got the missing end of the transmission harness...both have 11 wires going to the connector end but the wires are different colours. I can't find a diagram that actually matches the colours of my existing harness. Just seeing if anyone knows which wire to connect to which?
Thanks,
Phil
Thanks,
Phil
#3
Here are two diagrams for a 2000, that between the two show 11 wires going into the Trans, and they seem to show different colors for the trans and PCM.
I have a 98(I think) that has the connectors still attached< I will look at to see if there is a color mis-match, probably be tomorrow though.
I have a 98(I think) that has the connectors still attached< I will look at to see if there is a color mis-match, probably be tomorrow though.
#6
Hey thanks for the help guys. I think I tracked most of the wires down. Just not sure about one. I have one coming from pin 75 of C1(blue connector)...looks to be a faded pink wire. Is that what feeds pin E of the trans connector from the ign fuse 10A? On another pin out diagram I found it said it was off/crank/run voltage. And that pin 79 should be my 3-2 shift solenoid....but my pin 79 is empty. Photo of what I have.
#7
sawzall wielding director
iTrader: (4)
Pin 75 of the PCM C1 connector should be a pink wire that gets ignition + 12v in run and start. Both that and pin E of the trans connector get power from the same 10A fuse in the instrument panel fuse center.
pin 79 should be my 3-2 shift solenoid
Thats a 60e wiring diagram. The 80e only has a 1-2, 2-3, and TCC solenoid. The 60e has 4 solenoids instead of the 80e`s 3 solenoids.
pin 79 should be my 3-2 shift solenoid
Thats a 60e wiring diagram. The 80e only has a 1-2, 2-3, and TCC solenoid. The 60e has 4 solenoids instead of the 80e`s 3 solenoids.
The following users liked this post:
merim123 (08-26-2020)
Trending Topics
#8
Pin 75 of the PCM C1 connector should be a pink wire that gets ignition + 12v in run and start. Both that and pin E of the trans connector get power from the same 10A fuse in the instrument panel fuse center.
pin 79 should be my 3-2 shift solenoid
Thats a 60e wiring diagram. The 80e only has a 1-2, 2-3, and TCC solenoid. The 60e has 4 solenoids instead of the 80e`s 3 solenoids.
pin 79 should be my 3-2 shift solenoid
Thats a 60e wiring diagram. The 80e only has a 1-2, 2-3, and TCC solenoid. The 60e has 4 solenoids instead of the 80e`s 3 solenoids.
#9
Might have missed it but which wires are for the speed sensor? Trying to hook up a intellitronix cluster and its saying to hook up a wire to the speed sensor... looking for the 4l80e trans
#10
TECH Regular
I think pin 75 and pin E on the connector just get 12v on start and run, they don't necessarily go to each other. I went through this same experience when I got my lq4. I bought a connector and had to use a multimeter, a truck wiring pinout, and a trans pinout to figure out all the wiring due to color fade and some ambiguous coloring. This one helped me http://www.rostratransmission.com/ma...Form4176E.pdf.
Just be patient and use the process of elimination!
#11
TECH Regular
I think the 4l80e has two speed sensors. 99-02 red connector 20+21, 22+23. I think ones Iss and maybe ones Oss? Someone else can correct me but a search could probably tell you which one to tap.