Dorman 600-910 Transfer Case Motor Compatible with Select Models

I had been getting a Service 4wd alert on my 2005 Sierra Z71. I replaced the switch first, but that didn’t fix it. I tried to find the GM motor, but it seems that has been discontinued, which is surprising considering the number of vehicles that use this part. So I bought the Dorman. Side by side comparison, it seems pretty similar to the OEM part. I reused the gasket from the original after cleaning with brake cleaner, and I swapped the alignment bushing from the original using needle nose pliers.I have never done this job before, but it is not too difficult. I did it without completely removing the front drive shaft. I removed the retainers from the front end of the drive shaft so I could slide the shaft back and out of the yoke. This gave me enough room to get the middle bolt out of the old motor. The other two bolts came out with an impact.There are instructions and warnings on the new part to ensure that you don’t move the position of the motor by hand. If you can, you are supposed to put the transfer case in N by pressing the 2hi and 4lo buttons. Mine moved to N (I thought), but when I tried to put the new motor in, it wouldn’t align with the shaft on the transfer case. I grabbed the shaft with my fingers and turned it and it rotated a bit more and then had a very noticeable click as it found the actual neutral. Then the new motor went right in. I suspect this was the problem with my truck, it wasn’t fully in the position the motor thought it was in. Start to finish was probably about an hour, though I suspect it could be done faster now that I have an idea what I am doing. Hopefully this part will last and I won’t need to do it again.

First off, the product quality seems good and it fixed my issue.2005 suburban z71 with np8 transfer case and 4 button selector switch.My issue: service 4wd indicator and truck stuck in 4wd. Scan tool pulled c0321 code.Diagnosis: checked fuse (TREC) first. Then checked for corrosion/broken wires under fuse box in engine bay. Check for connections and corrosion behind knee plate under dash at TCCM. The TCCM is located on drivers side above emergency brake petal. Checked selector switch in dash with scan tool. Engaged/disengaged front axel with scan tool.Checked wiring/plug at encoder motor on t case. Verified 12v at the big orange wire in the connector. Then verified 5v at green wire.At this point I feel pretty confident it’s the encoder motor.Removal/Install: This is an easy job. Remove the skid plate below t case. Remove front driveshaft (it needs to go back the same way on the front diff so mark it before you take it apart). Unplug encoder motor. Remove the three bolts holding it on. Pull it out.IMPORTANT: The new encoder motor comes in the neutral position. The shaft on the t case has a key way on it. That key way needs to be facing straight down towards the ground which will put the t case in neutral. You need to put the vehicle transmission in neutral in order to turn the shaft on the t case!! Use wheel chocks please!! Once the transmission is in neutral, grab the shaft carefully with a pair of pliers and turn it so that the key way is facing down. Now you can install the encoder motor. Make sure you clean/reuse the gasket or, preferably, get a new gasket. There is a specific order to tighten/torque the bolts. Just google it. Clean/Reinstall everything else.Potential Problem: Here is what I wrote this review for bc I couldn’t find any information for the problem I encountered. When I turned my truck on, the lights on my selector switch flashed and then they all turned off and the t case wouldn’t respond. I scanned and pulled like 6 codes for the t case! Here is what I did. Check the plug to make sure it’s connected. Take both battery cables off the battery and touch them together for a few minutes. Reinstall and try again. I think the TCCM has to reset. Fired the truck back up, neutral light was illuminated on the switch and it shifted into all selections flawlessly. Hope this helps someone!

I have ordered two different ones for my 2007 Dodge ram mega cab. Amazon's filter says that both of them fit my truck and neither one does. I would recommend just spending the extra money at your local parts store. Waste of time and money because now I can't return the last one that I purchased

Installed on my 2005 Chevrolet Avalance Z71. Installed 2 months ago and have had no problems since.Suspected this part needed to be replaced after reading multiple Avalanche forums about faulty 2WD/4WD systems. Had already replaced the dashboard selector. Then late last Fall, I noticed that none of the 2WD/4WD options would like up at all - not even 2WD and could not get truck to shift into 4 HI or 4 Low.Installed fairly easy with one caveat you should be ready for:This part is shipped in Neutral. My truck was in 2WD, so the new part would not line up with the transfer case when it came time to install. If you have followed service manual instructions to this point, your battery is disconnected. Plug the new part into the harness, and then put something under it to support it's weight so that it doesn't hang freely. Then reconnect your battery, turn the ignition to ON, and select the gear your truck is currently in (2WD in my case). You should hear a click or something like that from the part. Go back under your truck and once you've selected the correct gear, it should snug right up to the transfer case with absolutely no forcing. The male part on the transfer case has just enough play in it to help it line up if needed. IF YOU ARE USING A HAMMER OR MALLET, YOU ARE DOING IT WRONG!!!!!!!!!!!Also, read several reviews that said it wasn't necessary to remove the front driveshaft. Maybe its not, but life is much easier if you do. Just make sure to chalk the alignment at the front of the driveshaft for reinstallation. That was the part I was actually most nervous about, but turned out to be no big deal at all.One other thing - Amazon recommended a gasket to be purchased with this part AC Delco #12384990. It's not even close to correct. You'll see the gasket when you remove the old part - it's a solid piece of hardened plastic. My truck is 11 years old and the original gasket was fine to keep using. I just blasted it with some brake cleaner and wiped it off really good.