4.3 vortec/4l60e help

[littlecars]

I noticed some of you guys are runing late model 4.3's and I was wondering if you could help me out?

I an biulding my own harness, I am 96% done I just need some help on the last few things I cant figure out. it is a 1998 4.3 with the matching 4l60e.

This is the pinout off of the PCM (powertrain control modual). most of it is easy enough to figure out, but I was hoppong some of you can conferm my thoughts

1. fuel pump relay ( I plan on turning my fuel pump on with a switch so I don’t think I need this)
2.
3. vss output( I think this is for the cruise control, I am not using it)
4. vss output( for the chevy speedometer, which I am not using)
5. MIL control ( I think I hook this to the toyota check engion light)
6.
7.
8.
9.
10. brake signal(I think this is for the tranny lockup, I hook this up so it is powered then I hit the breaks)
11. serrial data( this is for the OBD2 scanner)
12.
13. Ignition+ voltage
14. serial data( this is for communication between the PCM and the BCM, I am not going to use the BCM, I will have the VATS flashed out)
15.
16. EGR valve control( I don’t know if I want to remove the EGR valve? should I?)
17. Ignition+ voltage
18. Ignition+ voltage
19. 4wd wheel lock input( the motor tranny was from a 2wd and I am putting it in a 4wd. Do I need this?)
20. EGR vavle low
21.
22. CPP switch signal( what is CPP? judgeing from the wiring it gets power until the brake is pressed or the clutch is pressed maybe for criuse control)
23. 4wd low signal
24. Cruise engaged signal.

 

[chans]

I just bought a manual for the vehicle my engine came out of and it has all the wiring diagrams. I don't have my VSS hooked up so I have a speed sensor code being thrown on occasion. It is suppose to hook to the tail shaft of the 2wd model or the T-case of the 4wd so you don't really need that. I have the fuel pump hooked in so it will prime when the key is on and if you loose oil pressure it will shut the pump off and I prefer that over a switch.
I can look up the other ones but you really don't need anything that does not go to an engine or tranny sensor like the 4wd lock. I have a TH350 so I don't have anything to do with the original tranny hooked up and I kept the EGR. The OBDII test hookup was kept all together and grounded to the dash. The only other thing is you need atleast two O2 sensors to run. One on each side. I have the book for a 1997 Blazer/S10 which should be the same wiring unless you pulled the motor out of something else and your are welcome to borrow it for the diagrams.

 

[littlecars]

I actualy have all the factory daigrams. I have the HELM manual. The problem is that the PCU programming is knowhere to be found. How an I sposed to know what is happening in the black box.