I thought I would go ahead and post my opinion on the AFM disabler module considering I received mine today, have plugged it in, and tested it. There are two disablers mentioned here on these forums, so I will share my experience with the one I purchased.
The two disablers are "RANGE" and "GTMOTOR AFM DISABLE DEVICE RA003". After much reviewing, I went with the GTMOTOR version. Range will cost you $230.95. The GTMOTOR will cost you $115.00. They both do the same thing.
NOTE:
I called Range a couple of days ago and spoke to one of their team members about the new Blazers. This includes all year models from 2019 to 2023. I was told that their AFM Disabler has not been officially tested in the new Blazers and they would not guarantee that it would function properly. Although there may be some here, in these forums, that have the Range on their new Blazers, Range Technolgy Corporation is saying that they do not warranty or stand behind this module if it is in your Blazer and malfunctions. If you have a Range in your Blazer, then you are a beta tester. The GTMOTOR brand has been tested in the Blazers, and this is the bigger reason I went with GTMOTOR.
I got mine in the mail today and installed it per the instructions. Mine recommends disconnecting the battery first before installation... I did. I wanted to follow the instructions so I didn't have any adverse reactions that would taint my review. You may very well plug it in without disconnecting the battery and have no issues, but I wanted to follow the instructions in the box. After plugging the device into my OBD II port, I reconnected the battery. The blue lights flashed on the module and then it held with a steady blue light as the instructions said it would. I took my Blazer out for a 7-mile drive to see if it held in V6 mode... it did. It never oscillated back and forth from V6 to V4. The product is doing exactly what it said it would do. The vehicle is experiencing no adverse effects and it does seem to have a bit more pep in the throttle. Could just be the placebo effect, but it seems to be there. Nothing bad has happened, but I just plugged it in, so I will report back if I have anything else to say about this.
I went with the less expensive product simply because, all things being equal, why would I spend more? I'll see if this module holds up over time and lasts. Time will tell. As for now, I'm glad I got this, if for no other reason, but peace of mind. However, I know it is doing something physical and I'm hoping that will continue to bring positive results down the line as it relates to fewer engine issues due to GMs absolutely stupid AFM system that has an obvious negative impact on the motors that have the AFM system on them. I wasn't having any issues before I purchased this, but I believe this module, whatever version/brand you buy, will have a positive effect on our motors.