Range AFM question

KyleZ71 · December 20, 2016

Hi this is my first post. I was wondering about the Range AFM on a 2014 Sierra 5.3. I searched and I found mixed results. Some say it's good and other say check engine lights come on and trans not shifting right. Others say you can't leave it plugged in. I had one on my 2012 Silverado that I left in for 4yrs without any problems. If I was to buy one it would be the newest up to date version from Range. If you have a Range how do you like it? Any issues? Also do you leave it plugged in all the time? I will say that in my 14 I really don't notice AFM like I did in my 12 but I really want to keep this truck for a while and I'm worried about the long term harm from turning cylinders off. Thanks

bmws1k · December 20, 2016

I own a 2014 Silverado 5.3 and the truck has had the AFM connected since brand new I plugged it in before I left the lot Until now still running it with out an issue for me I just take it out when I go to the dealer or when the truck is parked for more the a couple of days. I also tow a 30 ' toy hauler with no tranny issues. Works well for me does what is supposed to do and if any updates send it to them for a free update. I was going to get a tuner but wanted to keep my warranty.

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dorkweed · December 20, 2016

I have one and use it on my 5 month old 2016. I don't leave it plugged in at home, as drive in M5 around suburbia, and don't need the 2nd overdrive. I use it for long highway trips..................Just got back from a 3000 mile 12 day trip.................Range AFM delete worked perfectly.

amxguy1970 · December 20, 2016

Long term reliability? Never had an issue with any of our trucks and one of my best friends has over 200k on his tahoe with no issues (or oil consumption). People seem to be stuck on thinking it is the same system that first debuted with a few issues over a decade ago, they aren't...

Tyler

last truck · December 20, 2016

Long term reliability? Never had an issue with any of our trucks and one of my best friends has over 200k on his tahoe with no issues (or oil consumption). People seem to be stuck on thinking it is the same system that first debuted with a few issues over a decade ago, they aren't...

Tyler

So what is different on this new version verses a 2008 system.

Newell33 · December 20, 2016

I had one for my '14 that was purchased towards the end of 2014. It worked, but would occasionally cause "service Stabilitrak" and "Service Brake Assist" codes to pop up. Range said that I had the latest version of the software, and it shouldn't be causing the codes, but it did. If you leave it plugged in, Onstar won't be able to gather info and send your diagnostic report, and you'll have a dead battery after about 3-4 days if you haven't started the truck. I found this out after coming home from a business trip. I wasn't too impressed with the company when I tried to contact them. Using it is still much better than driving around with a shuttering, clunking, sputtering pile of garbage that is the 2014+ series of trucks, but keep in mind it's not perfect.

GMC_SD_Ult_16 · December 21, 2016

I am caveating this with I don't know for sure the Range AFM disabler caused my issue or not..... But with 175 miles on the truck and after installing Range my TCM went out (glitch or something) and my truck would only remain in 3rd gear. I removed Range before replacement... Dealer did not know Range was previously installed and only said that something interfered with the communications that caused the TCM to become corrupted/fail . They replaced the TCM under warranty and I sent back the Range... Since then I have been too nervous to repurchase and reinstall. I also saw on a report that apparently Texas Instruments makes some or a large portion of parts for the TCM and did a review of the failure which they also could not quite figure out what caused the corruption. Like I said don't know if Range created my issue for sure as many have not had any issues.. Just very coincidental timing with mine within a few hours of installation.

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SirenRed16 · December 21, 2016

Guys I'm thinking about getting a range but I seen a orange range on autoanything and a blue range on summit racing. Which one is for a 2016 silverado 5.3?

DirtyMarcus · December 21, 2016

I bought a range device and it caused the stabilitrak and brake assist lights. I also had a bad battery and once I plugged in the device, it slowly killed my battery off the rest of the way and I had to get jump starts for a good week until I figured out the device was draining my battery. Sent it back for an update at it worked perfect since April. A few weeks ago the service lights popped up again and I contacted Range about it. The "code clearing" technique they have on their website did not work even though they said it works everytime in their response to me. Also apparently there is another update available if I send it in. I got tired of the blue under dash light it emits, the thing not resetting the codes, and the drain on the battery.

I now have a Diablo Tuner and am much happier with my truck overall and no more DoD. BTW Im selling my range device if anyone is interested.