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I checked at the PCM. I am so confused

My VSS signal is giving a good digital count, I checked it with a Ossiloscope. But the Speed the PCM is sending to my OBD2 scanner is bouncing all over. This is cousing the tranny to shift up and...

O.K. I have the motor conversion working as a 2wd truck right now. I havent tried 4 low yet, becouse I am having a problem with the VSS sencor.

The VSS is putting out a good signal (as I...

I am using a toyota transfere case bolted to the back of the 4l60e. I know it will work, I just dont know how good.

I would think that the 4wd trucks have a input to the PCM telling it your in low...

I am building a trail truck with a 1998 4.3 6v and a 4l60e tranny. The motor/tranny/pcm were all from a 2wd truck. I added a transfer case after the vss. my question is:

how will the tranny work...

Is it possible to get rid of the BCM?????

I am trying to simplify a wiring harness and want to completely get rid of it.

How can I tune the PCM to work without the BCM???

I am doing a engion conversion in my 85 toyota pickup.

Heres what I have:
1998 4.3 V6 with matching 4l60e tranny(originaly 2wd) with VSS
added a toyota 4.7:1 transfere case after the VSS. I have...

Correct me if I am wrong put your PCM has two inputs for the serial data.
#14 and #11. #11 is the one you need. #14 is for the body control module.