Hello budwich. Unfortunately the issue has not yet been resolved. This is damn frustrating since I have spent lots of money without no gain. I bought a new encoder motor and had a technician come out with his scan tool and came back with a code C0306. And i have been given these links stating that it was a short to ground including circuit A/ circuit B. So I went back to the parts shop and got another brand new encoder motor. But this "new" encoder motor had 4 used bolts in the box and did not come with a plastic tool device in the slot that the shaft of the tcase stabs into as the first one did have that plastic tool. I'm thinking this 2nd new encoder motor is a rebuild or one that someone tampered with and brought it back like that. I don't have the cash to bring it in to the dealership/stealership. I've also checked the ground wires and they tested positive. If I cant get this trailblazer issue solved, my last resort to to actually send it to the Hutterites. They told me that they can definitely fix it and would be nowhere as expensive as the dealership. Sounds funny but they know what they are doing since all their vehicle's are bowties and nothing else. I would love to check the electrical connections but I have 0 (zero) experience with electrical. I've been told many of times that a little knowledge can cause a lot of damage. So I stay away from that. If someone can sort of teach me what to do I can maybe then try. I live almost 2hours from town and cant afford to bring the truck in. Thanks for all the help in advance. Much appreciated.
Its been a while since I changed out my tran case motor... but its pretty simple. There are two wires for motor control, two for reading the position and two for "brake control"
your problem is UNLIKELY to be the motor since you have tried at least two (if I understand the "dialog" so far).
Further, your previous post:
QUOTE: "That's what I tried and nothing happened. The 2wd light was on steady and the service light was back on. The encoder was not connected to the tc and did not move at all. I hope the new decoder motor isn't fried. That just cost me $300 in the hole. I'm at the point of of putting her on a trailer and bring it to the nearest tranny shop that is 1 hour away. But then is it worth it?"
kind of points out the problem. As was suggested, mechanically disconnect the motor from the transfer case and cause it to move by using the switch on the dash to set the motor to align with the position of the shaft of the case WHICH you need to ensure is in the "right" position as stated previously (most likely 2W). "
You indicated that you have moved the shaft to the right position... confirm that this is true and INDEED you have moved it by hand... this is to ensure that the transfer case is indeed mechanically happy. IF you can't move the shaft by hand, I do believe this is mechanical issue in the case.... and that's a more significant problem than the encoder motor.
what does this mean... "I've also checked the ground wires and they tested positive." especially when you say you have ZERO electrical experience.... :-(
ONE IMPORTANT NOTE: I do believe there is nothing stopping the encoder motor turning "all the way around" when not mounted to the transfer case and I think this can cause problems if not carefully when powering the motor when not mounted... was there warning labels on the unit?