GM Repair Problems? Ask GM Repair Expert Now.
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Do you have the 4 pushbuttons labeled Auto,XXXXX 4 wheel High, and 4 wheel Low?
and my transfer case is a Borg Warner
The transfer case is full time all wheel drive, you are correct. The lock is for the rear differential. You can unplug the connector at the rear differential to see if this makes a difference. (wires are Black and Light Green)
There is also a locking mechanism in the transfer case, this is what is likely causing the problem. The front and rear drivelines are staying locked together, causing binding when turning. See #16 in exploded view of the transfer case below. Before tearing into the transfer case, it would be best to scan for trouble codes in the transfer case control module (TCCM), this requires the use of an advanced scan tool that can read Chassis codes.
I already tried to unplug the connector of the rear differential lockers, but the problem remain. The problem is around the transfer case.
I haven't a scan for the TCCM. Only a scan for generic OBDII american cars and truck, but it didn't found any trouble code.
Then, do you think that the usual problem is inside of the transfer case, in the actuator, in the scheme around parts n° 15-16-17-18?
Or for actuator do you mean the electrical motor outside the tranfer case that shift from Hi to Hi Lock to Hi Low Lock? Do you have a wiring diagrams of this?
The part I am referring to is the actuator (electric motor) on the transfer case that shifts the different ranges. The wiring diagram for the shift controls is below for you.
ok, but the actuator shift from Hi Lock to Hi Low Lock and reverse. Than it should work, don't you think so?
Could you give me bigger scheme of the trasfer case and of the wiring diagrams because are difficult to read in this small size.