98hc4mula

iTrader: (5)

does anyone know if a 4l80e can be stuck in safe mode or in second gear if the speedometer cable was not intact....
I found out that the speedometer (VSS) cable had a wire thorn. I fixed this and am about to test drive it.
I just finished installing the 4l80e trans. and we could not get it to shift gears, it was stuck in second even after the re tune.
I will see....laters

also what is the fuse that is responsible for the 12v to the transmission.
I know that there are 2 pink wires at the big connector....are they both 12v sources?

98hc4mula

iTrader: (5)

ok this is so cool. I took the car for a spin and the tranny does shift now. I am so glad that it was a simple fix, I did not want to go in there and re-do all the wiring again. that was very time consuming.

the PCM did not command the tranny to shift since the VSS was not functioning, the VSS wires were messed up and just needed to be reconnected again.
the 98 PCM is controlling the 4l80e with out any problems.
thanks again for all who helped me out a lot specially John (slow67).
now we just have to adjust the shift points and we are set to go.

Ryan33187

iTrader: (16)

Did your car throw any codes if so what codes...? I am currently having an issue with the trans staying in safe mode.

98hc4mula

iTrader: (5)

my car did not throw any codes....the car is running good with the new transmission now. I was having a hard time bc the VSS was not connected to the tranny since the wire had been cut by me on installation.
what year is your car and how did you wire it?

Ryan33187

iTrader: (16)

Used an adapter harness and car is throwing codes. Had harness checked and its good going to try wiring it with a relay how the person had it before me I have both vessel and issue sensors in but going to pull the front one for the new wiring has the 4(80 segment swap tune also car is a 2000

Ryan33187

iTrader: (16)

Any clues?

tx3

iTrader: (1)

Bump it