Wiring harness help

[bsamoul]

OK did quite a bit of work tonight.

Jacked the car up and tested. No 4WD, BUT front drive shaft is spinning, so I'm thinking something inside the differential is shot because I pulled the acuator out and tested it and it worked fine. So I know my problem lies somewhere in my diff. Any ideas?

 

[loulblades]

What I did was use crimp connectors and connected the old connector from the old actuator to the new harness. ( cut off the one that came with the harness and used the actuator harness so it would plug in) what your saying is that I should be able to leave the prox sensor unglued and the system should work? I'm thinking its one of three things, my connection, bad actuator, or the guy screwed up wiring it. I'm going to grab a test light tomorrow and see if the actuator is getting power to it, I should be able to narrow the problem down.

After I figure the 4x4 out on to the manifold gasket, that tick pisses me off so much.

To be honest I am a little confused on what you are saying.

Just to reiterate:

The connector that plugged into the old actuator (2 pin) should have plugged into the 2 pin connector on the new harness. The only splices should be the black/white wire and the brown wire.

What I was saying was that if you forget about the black/white wire coming from the new harness (tape it off) and keep your original connection to the diff sensor (2 pin connectors) it should work that way. In fact IMHO it would be better because the sensor indicates when the diff is actually engaged whereas the new actuator output only indicates that the actuator is extended.

Not sure what you meant by "leave the prox sensor unglued".

---------- Post added at 10:12 AM ---------- Previous post was at 10:09 AM ----------

OK did quite a bit of work tonight.

Jacked the car up and tested. No 4WD, BUT front drive shaft is spinning, so I'm thinking something inside the differential is shot because I pulled the acuator out and tested it and it worked fine. So I know my problem lies somewhere in my diff. Any ideas?

How did you test it? By connecting 12 volts to it or pulling it out and watching it extend when you press the 4WD button?

Let me know.

 

[bsamoul]

I pulled it out and hit the button and it extended.

 

[loulblades]

I pulled it out and hit the button and it extended.

If your front drive shaft is providing power as you previously mentioned and the actuator is operating well...that is not good. This is of course an indication that the front diff (one of the more expensive parts in this system) is not transferring power to the wheels.

I don't exactly know how the front diff engages (some type of yoke pushing a gear I would guess) but I have the service manual set if you want me to check it out. Either way, it would appear the front diff is in need of repair/replacement.

 

[bsamoul]

If your front drive shaft is providing power as you previously mentioned and the actuator is operating well...that is not good. This is of course an indication that the front diff (one of the more expensive parts in this system) is not transferring power to the wheels.

I don't exactly know how the front diff engages (some type of yoke pushing a gear I would guess) but I have the service manual set if you want me to check it out. Either way, it would appear the front diff is in need of repair/replacement.

I have a Hayes manual but it doesn't tell me anything about the front diff or anything about the four wheel drive system. It's appearing to be useless to me. Do you have a GM service manual for technicians or something?

 

[loulblades]

I have a Hayes manual but it doesn't tell me anything about the front diff or anything about the four wheel drive system. It's appearing to be useless to me. Do you have a GM service manual for technicians or something?

Yes. Bought it on ebay. It is a 4 or 5 volume set.

 

[jrsavoie]

WHat is the rest of the story?

Was the spacer installed?