Do I need to replace the transfer case shift motor? He said that they would probably just need to change the tranny fluid. The heavy gauge black and red power wires had continuity. I started by cutting a quarter of a turn off the spring. I have an 01 Silverado and I am about to do the same thing. The module had power but the lock circuit didn't. If you need to replace your transfer case control module for your Chevrolet Silverado 1500, then you have come to the right place. Now if the wire looks good then I would like to you to unplug the encoder motor and see if the fuse still blows.
How costly is this module and can I get it online? We replaced that and the different lights would light up when pushed, but we could not hear anything at the transfer case to indicate anything was happening. Get back to me and we will go from there. If no buttons are pressed, and the transfer case shift control module detects a voltage level outside the possible range approx. I reassembled the transfer case motor and have been shifting fine since. The round plastic piece with the square hole is squeezed between the notched metal plate and lid preventing it from spinning. I found that the encoder locking circuit did not have voltage when it should have voltage is applied to the locking circuit to engage a solenoid within the encoder which releases the lock and let's the encoder turn. It's always best to start checking for wiring problems by inspecting the harness in areas where it's most likely to be damaged by moving engine components, rotating parts or road objects striking the underside of the vehicle.
It is the automatic 4x4, with 4 dash buttons. First I need you to inspect the orange wires that go from that fuse out to the module and motor. Going this far without first checking the fuse could turn out to be pretty embarrassing if the problem was simply a blown fuse. Its tricky to get the shaft to stay in the correct position for the encoder motor to slide on though. When the old encoder came off, the T case shaft had pressure on it, and turned when the encoder came off. I've been told not to connect the wiring or try to turn the encoder without it being installed, is there any other way to get the shaft to line up? Did I get a bad transfer case motor or is there something else to look for? It can determine this because each switch has a different resistor in series with the circuit. The transfer case module sends 8 volts to the switches, then monitors the return circuit to determine whether any of the switches is depressed.
Replaced Transfer case motor, stopped blowing the atc fuse, but now it will not come out of 4hi. When I check for voltage at the encoder motor wiring harness I'm only getting a reading of 4V with the ignition on nothing when ignition off. With c0323 low voltage or smthn and a g1038 not sure what that one is. I used the manual from the site u gave me and went through the ten step process it advised for that code and the only step we havn't done is replace that module. Thanks for your help sir! Cheers Ran truck into snow drift recently, spent half an hour rocking back and forth in 4W-Auto while waiting for tow never revved past 2500 rpm, didn't really strain anything.
I did solve this problem and wanted to post the solution for any others that may run into it. I hope that helps anyone having 4X4 issues. . Yes we have scanned it and the dtc is c0323 the transfer case lock circuit low. I reassembled the brake control solenoid and applied power, no luck.
Get back to me and we will see what we can find. Shop said you don't have any other option and they have done it before. I unhooked the Transfer case motor and the fuse did not blow. Since I was getting scan data and encoder motor operation, the fuse had to be good. It was obvious the switch had a mind of its own and needed replacement. Or the dash selector switch? I did fix the problem, it was a shorted wire in a wire harness under the fuse box. Since it seemed like the problem was in the front axle area, I decided to check the front axle motor actuator next.
I'm a retired accountant, so forgive my description above if I am not using the right terminology. Fixed my issue as well. That fits over the square shaft of the transfer case electric motor. Almost sounds like your t-case has an internal problem. The encoder lock circuit gets power from the fuse block in the engine compartment. My service 4wd light is on. Now my new one doesn't line up.
Understand this problem is common on Tahoes and Avalanches also. One is a 1999 model, the other a 2000. A harness repair was in order. I do know what I'm doing apparently you have never seen a transfer case before if you don't know that the transfer case lock solenoid allows the encoder motor to operate to change between 2wd, 4Hi and 4Low. Can anyone tell me when I am turning the transfer case shaft with a wrench, how many positions or detents should it have? Ignition switch is off when replacing fuse, blows instantly.