More 4x4 problems

A few months ago my 4wd stopped working. The 4wheel high doesn't try to engauge at all (no lights no nothing) the 4 wheel low light blinks for a few seconds but never engauges. I have replaced the vaccum lines, cables, encoder or shift motor, and the switch. I would welcome ANY advice on this matter. thanks in advance

Hunter

Year, body , miles, engine, little more info please

Oh yeah that may be helpful thanks.

1996 2door auto v6 LS trim

Sounds like a bad tccm Tranfer case control module
Any noise from dash area when you push the buttons for the 4 wheel drive

only in 4wd low. it sounds like a relay switch, nothing from 4wd hi. I cant remember if 4wd high has to be engaged before 4wd low

it doesnt

So you are saying when you push 4hi nothing is heard or happens?

Yes that is correct NOTHING happens.

Sounds like the relay.

As it turns out a short in the switch across the 2hi connector will also burn out the tccm. New switch and tccm and I have 4wd back. Thanks to all.

Hunter

Sweet!

What did everything cost you in the end?

I have about $250 in it plus about 6mos. of frustration.

Did you have to replace both parts? Where did you get these parts from?

I have a lot of good parts left over that I didn't need. sort of the trial and error thing. If you can email a list of parts that you need I will try to locate them. [email protected]

e-mail sent

BlazerLT...where is the 4wd relay on a 94 Blazer 4x4? I can't see one behind the glove box or under the dash in that area. There is one under the hood on the pass side firewall...could that be it? As always, thanks for the help.

BlazerLT...where is the 4wd relay on a 94 Blazer? I can't see one behind the glove box or under the dash in that area. There is one under the hood on the pass side firewall...could that be it?
As always, thanks for the help.

Is ok if I answer your question???
Look at your ecm it should be mounted on a bracket on the ecm
TCCM is what you are looking for ???

Sure, it's okay. Thanks for the reply. I'm not sure where the ecm or the tccm is on this vehicle. When the 4wd tries to work I hear a clicking from the pass side, but can't find anything. Lately, I can only get the 4wd switch to do anything is by moving the veh back and forth in the driveway. Tried the battery trick...no joy.

Help, My front driveshaft spins but the wheels do not Any Ideas is the front diff stuck?

I have a lot of good parts left over that I didn't need. sort of the trial and error thing. If you can email a list of parts that you need I will try to locate them. [email protected]

Do you still have these parts? I still haven't fixed my issue with my 94.

I think I still have a control modual. What were you looking for?

I think I still have a control modual. What were you looking for?

I will have to run the error codes when I can get a chance to. It has been raining here since monday. Either a TCCM or an encoder motor. Do you have any or can you take some pics of these parts? So I know what I am looking for

Checked the error codes from the ALDL connector. I got 2 flashes from the 4WD switch. I it is a bad encoder motor. Thanks for all the help. I will have to order one now. I will let you guys know what happens.