Review on 🔧 Dorman 600-120 Transfer Case Motor Encoder Ring Black: Efficient and Reliable Solution by Thong Lopez

I just installed this on my truck and everything went very smoothly. If you're planning on replacing just that encoder ring and not the entire assembly, here are a few pointers (thanks to everyone who has already posted in this thread). After removing the assembly (see other comments on disabling the transfer case motor). car) it is very easy to replace this ring. Overtime is less than 10 minutes. Here are some important tips: 1- A tiny torx is required to remove the six hex head screws sandwiched between this washer and the three gears. Place the black stack of the device on a clean, flat work surface. 2- Remove six screws - 2 of 3 different lengths. The shortest ones only hold the halves together, the longer ones also hold the black stack in place. 3- Pry the halves apart with a small screwdriver and carefully lift the half off the black stack, flip and set aside. Side by side with the half that's still on the workbench. You'll see extra Torx screws on the black stack, but just leave them alone. 4- The bottom half is now open showing a large gear, a medium gear and a small gear partially covered by the black stack. CAREFULLY remove any grease or dirt from the gears facing you and use a marker to mark the contact points between the large gear and the gear next to it. 5- Pay attention to the three prongs and their connection points. Note the relationship of the connector to the pins and mark one end of the connector. 6- Carefully lift the gear wheel with the attached disc off the bottom plate. It's probably the seal/friction disc on the bottom of the gearbox. Don't lose it, and when it comes out (about 1/2 inch in diameter) put it back in the bottom half where it's obviously going. 7- Please note that the shaft around which the disc rotates has a recess. This is an alignment guide for installing a new drive. 8- Use a screwdriver to convince the disc to disengage from the large gear you need to hold in place. 9- Install the new washer in the place where the old one just came loose. 10- Put the three pins back in the way the old one came out - the ratio between the big gear and the middle gear should be exactly the same at this point (note - I'm not sure if this is REALLY that critical , I'm just guessing that there's some connection between the black stack thing and the location of the big gear the drive might spin around has to be remembered, it's not hard, it just takes some care.) 12 - Remove any debris, then carefully slide the top half back onto the assembly and secure with the torx screws the way they came out. the easiest part of the whole operation. If you can remove the driveshaft, unplug the smelly plug and undo the three bolts holding the motor in place, it will be like falling off a log. Much luck. I have no idea how well this part will hold up. I'll make a note to release more articles over time. So it is now September 2017 and my truck is again showing the error message on the dashboard. I'm not impressed. It's been about 2 1/2 years and probably less than 15,000 miles and I think this time I'll try to just replace the whole thing. Can't believe this keeps failing (first time I've had a professional mechanic so this is 3rd time in 60,000 miles this part has failed). I think it's just a crappy design. I'm glad some of you found the above comments helpful. When I read them 30 months after I wrote them, they seem a bit difficult to understand, but once you get inside things become quite easy. In any case, good luck. I think that's just part of owning a GM product.