Clarification: This unit is for a 2019-2021/22 non-refresh Sierra or Silverado. For the Refreshed 2022+ versions and GM SUVS, Range now has a new product: DFM MODULE GM REFRESH DFM Module for Refresh V8 models - 2021-2024 GM SUV and 2022.5-2024 GM 1500 Truck Part RA007 Please look up your vehicle on their website to be sure.
@Donslife I have a 2019 AT4 6.2 with 10 speed. It has the factory performance package (exhaust, CAI, Tune). I dont get all the drone with this package as i read about from others that add aftermarket exhaust. Is it possible the factory tune disables DFM? I cant find any good responses to this question online….
Don, are you sure this works? If you go on the range website, the 10 speed either 5.3 or 6.2 is not listed. I also had this in combination with my edge insight, and can confirm it did NOT stay in V8 mode all the time.
@@caseysathan I emailed tech support at Range Industries before making the video asking the same question for my 6.2L. Here is the response: Hey Don, Yes, the units will be compatible with the 10speeds.
Thank you, Customer Support 866-404-6141 Range | SuperChips | DiabloSport | Edge Monday-Friday 8AM-4:30PM Eastern Standard Time
They FINALLY came out with the disabler for the 2022 refresh and on...except instead of OBD2 port, it plugs into ECU. DFM only kicks in when you are coming to a stop, which Range says can happen.
I’ve had a Pulsar installed on my 2020 for 3 years now. Never looked back. The only thing that sucks is the MPG (13 maybe 😂) but that’s it. Never had a problem of any kind with the LT installed. The tire size adjust and throttle control option with the Pulsar is a bonus
If you don’t want to have lifter issues, you’re going to have to do a DOD/AFM delete. Even trucks built during the pandemic still have lifter issues. The only thing missing is the electronics. I had a 2022.5 Silverado 1500 with the 6.2. I didn’t use the truck much so I never had any issues with it. A year and a half later I sold it and purchased a 2024 Silverado 2500 LTZ Duramax. There are no fuel saving devices as it’s not EPA rated. So it should be a nice long lasting vehicle. Naysayers will say that the emissions systems will fail, but I don’t buy it. By the time it fails, I’ll be long gone.
I have been running the Pulsar LT on my 2021 GMC Sierra AT4 (6.2L) without any issues. It works fine. The two #1 reasons were for AFM/DFM and Auto Start/Stop. The Pulsar added a couple of other nice features, like tire size correction and throttle position. Pretty sure my truck is prob out of warranty now...so, not really concerned about that. Like you, I have done more frequent oil/filter changes using Mobil 1 only. Truck runs strong.
My pulsar is in the box gathering dust. 2020 6.2 AT4 10spd and after months of no problems I finally started getting the random fault messages and being thrown into limp mode; after trying everything else the internet recommended I took the pulsar out of the equation and the issue stopped. Started flaking almost everyday where I would have to disconnect power to the truck to clear the fault or else engine wouldn't start! This DFM and auto start stop eliminator paired with peddle commander is my pulsar replacement for about 10 months now and zero issues 🤞🤞 ymmv obvi
it does leave a footprint just not in the way you think. The dealer will do a deep computer scan and see that something was plugged into the OBD2 slot right before engine failure.
Thank you Don, another great video!! I've been cussing that darn Auto Stop/Start function ever since I bought my truck. Because of this video, I bought one of these Range Technology devices and plugged it in this morning on my 2021 GMC Sierra 1500 Denali with the 6.2 liter engine and it works GREAT! Took care of that darn Auto Stop/Start function and has the added benefit of disabling the AFM/DFM function as well. I will let people know that on mine, the light on the Auto Stop/Start button in the center column stays on, but the function is disabled which makes me smile every time I come to a stop!!!
@@ahmedalqallaf7436Not true. Lots of failures with this attached. Unfortunately. GM needs to remove the hardware. Software will not remove it. GM is working on a new engine design for 2026.
I went with the Pulsar LT and I haven’t had any issues. I bought it specifically for the tire size change option and the throttle control. The auto stop and DFM disable were a bonus.
Had one for my '18 Silverado with the 5.3 and after watching your video I confirmed it will now work on my' 21 Silverado with the 6.2l. Glad I never got rid of it. Now my 6.2l will be a true V8!
I use BT Diesel AutoSync that allows many benefits (lighting changes, window switch activation and many more) - also for AFM. Love it! No need to have a dongle plugged in constantly. Also, I did use Holley's Superchips F5 Flashpaq for tire sizes and a 91 octane tune (tuned out AFM on it, too, but the Autosync let's me get into the BCM for changes). I always love the vids, Don, thanks! :)
Nice Done! sounds good. I use the Pulsar LT on mine, it works good and love the Throttle Booster with on-the-fly Adjustment. did you checked out the Pulsar by any chance?
I installed a Range DFM and auto stop module in my OBD port on my 2020 LT Trail Boss less than a year after I purchased the truck brand new. It has worked flawlessly. I just remove it when I go for service and plug it back in afterwards.
Just looked it up for the 2023 Sierra 1500 truck (6.2L v8). Installation requires removing the driver wheel, wheel well liner, and installing it in-line with one of the ECM connectors. So zero chance of being able to simply remove it as wanted (like the pre-refresh trucks). IF it was as easy as you mentioned, I'd consider it. With this installation process, chances are low that I'll get one.
I’ve been running these since they first come out on my silverados, minus my high country that I just had it disabled after a dyno tune, I no longer have a Silverado and gave it to my dad, he loves it as well. Doesn’t leave a footprint on ECM either.
According to Range Technology the Pulsar LT does not leave any type of footprint on the PCM or ECM. With both of these units the only issue is emissions testing, you may need to disconnect them a few days prior to testing because they both disable some of the internal/automatic vehicle testing and this will show up during the emissions testing. With it unplugged the vehicle returns to the automatic testing within a couple of days of normal driving. Been using both of them in different vehicles I’ve lost about 1 mile per gallon on fuel efficiency, which to me is not a big deal knowing that my V8 stays a V8 at all times!!!
Hey Don I had one in my 2018 silverado 1500 5.3L, And I'm getting one for my 2024 gmc sierra Denali 6.2L because I been calling Range Technology for it but it was not yet ready, So I called the other day and it was ready. So I'm called them tomorrow for it and should have it by Friday.
I own a 21 sierra 5.3 10speed i bought this device around 18 month ago My experience was i have to exceed 40mph then its deactivating the dfm if i keep driving with liw speeds it will keep on shaking or jerking trying to engage disengage the system. So from what u have right now is it working from the start up immedietly?
I have that installed in my 2019 Chevy Silverado 5.3. For last 4 years.. Works great, but you should reset it once in a while. Simply plug out, plug in..
Pulsar LT is the way. I take it off before I get oil changes. The truck feels like there is something wrong with it when it's not installed. They advise that it does not leave a trace on your vehicle. The dealership has never mentioned anything to me about it.
Have you never gotten an odd warning or message displayed that you thought was just a fluke? For me it was service parking brake and some other sensor gladly forget but I dealt with random warning messages that went from maybe once a month to daily once it got worse even sending my pulsar in for warranty (nothing found wrong 😂) after about 10 months now without pulsar I'm having zero issues. Had to install a couple things to replace the features I wanted but those have never left me stranded... Until I could unplug the negative terminal of battery at least! Obviously you haven't dealt with the worst side of it but just curious if pulsar owners are getting random warning messages they don't attribute to the pulsar and just assume it's a fluke 🤷♂️
@_____mh I've never had any codes other than the open and close window thing which has only popped up if my battery has been disconnected. I've had zero issues with the truck while running the Pulsar. Some people worry about fuel efficiency but I still get the same bald eagles/Budweiser with the Pulsar.
Their website lists their new version (not OBD2 interface) DFM MODULE GM REFRESH DFM Module for Refresh V8 models - 2021-2024 GM SUV and 2022.5-2024 GM 1500 Truck Part #RA007
Great Video Don! Another way to verify that it works is to plug a good scan tool to your car and look at the Live data. If it’s truly working it’ll show “0” for cylinder deactivation cycles of all cylinders like when in L9 mode. I just purchased one of their freshly new released DFM deactivators for the GM refresh models and sure enough the scan tool said otherwise. Back to L9 I go.
I would love to see you actually do the DFM/DOD delete with proper lifters and cam replacmen. Also I was told my warranty was void because I do my own oil changes and don't have work orders stating my oil was changed even tho I do keep a log book. So I am curious if you do your own oil changes. I am town between trading in, (I have a bit of positive equity) or just keeping it till the wheels fall off. It's not paid off so I'd be torn if the thing kicked the bucket while still under payments.
@@BR549_o7 that's exactly what I thought. It's up to them to prove damage is done by lack of oil not for me to prove that I've done them. Is it not? I am a license heavy equipment tech and I've rebuilt a number of engines for our work crummys like 2.8l duramaxs I probably know more than those tards at gm service departments. Number one thing is I'd say about them is they lack compassion for their customers and just want you to trade in ur vehicle for another piece of garbage.
Ok, Don bought it and likes it, so just ordered mine! Best part for me is I have a ‘24 Sierra 5.3 and a ‘24 Silverado 5.3, so I can move it from truck to truck! No more L9!!!
@@BR549_o7 not the one that plugs into the OBD that Don reviewed. For refresh it is the model that plugs into the ECM. I verified this with Range support.
Clarification: This unit is for a 2019-2021/22 non-refresh Sierra or Silverado. For the Refreshed 2022+ versions and GM SUVS, Range now has a new product: DFM MODULE GM REFRESH
DFM Module for Refresh V8 models - 2021-2024 GM SUV and 2022.5-2024 GM 1500 Truck
Part RA007
Please look up your vehicle on their website to be sure.
@Donslife I have a 2019 AT4 6.2 with 10 speed. It has the factory performance package (exhaust, CAI, Tune). I dont get all the drone with this package as i read about from others that add aftermarket exhaust. Is it possible the factory tune disables DFM? I cant find any good responses to this question online….
I can confirm the new inline module for the 22+ works without any issues.
Don, are you sure this works? If you go on the range website, the 10 speed either 5.3 or 6.2 is not listed. I also had this in combination with my edge insight, and can confirm it did NOT stay in V8 mode all the time.
@@caseysathan I emailed tech support at Range Industries before making the video asking the same question for my 6.2L. Here is the response:
Hey Don,
Yes, the units will be compatible with the 10speeds.
Thank you,
Customer Support
866-404-6141
Range | SuperChips | DiabloSport | Edge
Monday-Friday 8AM-4:30PM Eastern Standard Time
They FINALLY came out with the disabler for the 2022 refresh and on...except instead of OBD2 port, it plugs into ECU. DFM only kicks in when you are coming to a stop, which Range says can happen.
I’ve had a Pulsar installed on my 2020 for 3 years now. Never looked back. The only thing that sucks is the MPG (13 maybe 😂) but that’s it. Never had a problem of any kind with the LT installed. The tire size adjust and throttle control option with the Pulsar is a bonus
Man you channel cost me a lot of money 😂. There goes another $200.
I paid $300 Canadian 😔
Obviously you don’t buy a truck for fuel economy but does running on all 8’s using the DFM disabler reduce MPG?
I touch on this in the video near the end. So far no measurable change from my experience
Don, I have a 2020 GMC, Sierra 1500 Denali. How can I tell if it is AFM or DFM? I would like to try this mod.
It would be DFM on a 2020 5.3 and a 2020 6.2. Your window sticker would also list it as Dynamic Fuel Management
If you don’t want to have lifter issues, you’re going to have to do a DOD/AFM delete. Even trucks built during the pandemic still have lifter issues. The only thing missing is the electronics. I had a 2022.5 Silverado 1500 with the 6.2. I didn’t use the truck much so I never had any issues with it. A year and a half later I sold it and purchased a 2024 Silverado 2500 LTZ Duramax. There are no fuel saving devices as it’s not EPA rated. So it should be a nice long lasting vehicle. Naysayers will say that the emissions systems will fail, but I don’t buy it. By the time it fails, I’ll be long gone.
I have been running the Pulsar LT on my 2021 GMC Sierra AT4 (6.2L) without any issues. It works fine. The two #1 reasons were for AFM/DFM and Auto Start/Stop. The Pulsar added a couple of other nice features, like tire size correction and throttle position. Pretty sure my truck is prob out of warranty now...so, not really concerned about that. Like you, I have done more frequent oil/filter changes using Mobil 1 only. Truck runs strong.
My pulsar is in the box gathering dust. 2020 6.2 AT4 10spd and after months of no problems I finally started getting the random fault messages and being thrown into limp mode; after trying everything else the internet recommended I took the pulsar out of the equation and the issue stopped. Started flaking almost everyday where I would have to disconnect power to the truck to clear the fault or else engine wouldn't start! This DFM and auto start stop eliminator paired with peddle commander is my pulsar replacement for about 10 months now and zero issues 🤞🤞 ymmv obvi
it does leave a footprint just not in the way you think.
The dealer will do a deep computer scan and see that something was plugged into the OBD2 slot right before engine failure.
Thank you Don, another great video!! I've been cussing that darn Auto Stop/Start function ever since I bought my truck. Because of this video, I bought one of these Range Technology devices and plugged it in this morning on my 2021 GMC Sierra 1500 Denali with the 6.2 liter engine and it works GREAT! Took care of that darn Auto Stop/Start function and has the added benefit of disabling the AFM/DFM function as well. I will let people know that on mine, the light on the Auto Stop/Start button in the center column stays on, but the function is disabled which makes me smile every time I come to a stop!!!
Unfortunately these will not keep your lifter or rockers from failing.
It will keep them working for longer time thats for sure
@@ahmedalqallaf7436Not true. Lots of failures with this attached. Unfortunately.
GM needs to remove the hardware. Software will not remove it.
GM is working on a new engine design for 2026.
I had a range technology on mine and I had lifter failure
I went with the Pulsar LT and I haven’t had any issues. I bought it specifically for the tire size change option and the throttle control. The auto stop and DFM disable were a bonus.
Had one for my '18 Silverado with the 5.3 and after watching your video I confirmed it will now work on my' 21 Silverado with the 6.2l. Glad I never got rid of it. Now my 6.2l will be a true V8!
Get 6.6 liter 2500hd gas burner
🔥
I use BT Diesel AutoSync that allows many benefits (lighting changes, window switch activation and many more) - also for AFM.
Love it! No need to have a dongle plugged in constantly.
Also, I did use Holley's Superchips F5 Flashpaq for tire sizes and a 91 octane tune (tuned out AFM on it, too, but the Autosync let's me get into the BCM for changes).
I always love the vids, Don, thanks! :)
Nice Done! sounds good. I use the Pulsar LT on mine, it works good and love the Throttle Booster with on-the-fly Adjustment. did you checked out the Pulsar by any chance?
Good information. Nice to see some clips of the AT4 when it was white.
She’ll be white again!
I've been using one on my 17 Sierra for the last 3 years and have had no issues
I installed a Range DFM and auto stop module in my OBD port on my 2020 LT Trail Boss less than a year after I purchased the truck brand new. It has worked flawlessly. I just remove it when I go for service and plug it back in afterwards.
By the way, I have a 5.3 liter V8 , 10 speed transmission
Just looked it up for the 2023 Sierra 1500 truck (6.2L v8). Installation requires removing the driver wheel, wheel well liner, and installing it in-line with one of the ECM connectors. So zero chance of being able to simply remove it as wanted (like the pre-refresh trucks).
IF it was as easy as you mentioned, I'd consider it. With this installation process, chances are low that I'll get one.
I understand that! And I don’t blame you
Range has a factory warranty guarantee. It won't void it.
I’ve been running these since they first come out on my silverados, minus my high country that I just had it disabled after a dyno tune, I no longer have a Silverado and gave it to my dad, he loves it as well. Doesn’t leave a footprint on ECM either.
I was super lucky to get my truck with AFM omitted from assembly.
Been using in my 5.3 for a couple months and it’s worked great.
You seems to love your truck and plan to keep it a while so might as well do an D.O.D delete on it. That install is temporary
I have also been running the Pulsar LT, 2022 AT4 6.2L without any issues for a couple years now.
According to Range Technology the Pulsar LT does not leave any type of footprint on the PCM or ECM. With both of these units the only issue is emissions testing, you may need to disconnect them a few days prior to testing because they both disable some of the internal/automatic vehicle testing and this will show up during the emissions testing. With it unplugged the vehicle returns to the automatic testing within a couple of days of normal driving. Been using both of them in different vehicles I’ve lost about 1 mile per gallon on fuel efficiency, which to me is not a big deal knowing that my V8 stays a V8 at all times!!!
Thanks for the info
We ran one for 2 years before our supercharger and DOD delete was done they work well.
Hey Don I had one in my 2018 silverado 1500 5.3L, And I'm getting one for my 2024 gmc sierra Denali 6.2L because I been calling Range Technology for it but it was not yet ready, So I called the other day and it was ready. So I'm called them tomorrow for it and should have it by Friday.
Nice 👍 Let is know how it goes!
I own a 21 sierra 5.3 10speed i bought this device around 18 month ago
My experience was i have to exceed 40mph then its deactivating the dfm if i keep driving with liw speeds it will keep on shaking or jerking trying to engage disengage the system.
So from what u have right now is it working from the start up immedietly?
good question. Don could test this by hitting the auto start stop button at speeds under and over 40 mph.
I have that installed in my 2019 Chevy Silverado 5.3. For last 4 years.. Works great, but you should reset it once in a while. Simply plug out, plug in..
Thanks for the info!
Pulsar LT is the way. I take it off before I get oil changes. The truck feels like there is something wrong with it when it's not installed. They advise that it does not leave a trace on your vehicle. The dealership has never mentioned anything to me about it.
Same situation here!
Have you never gotten an odd warning or message displayed that you thought was just a fluke? For me it was service parking brake and some other sensor gladly forget but I dealt with random warning messages that went from maybe once a month to daily once it got worse even sending my pulsar in for warranty (nothing found wrong 😂) after about 10 months now without pulsar I'm having zero issues. Had to install a couple things to replace the features I wanted but those have never left me stranded... Until I could unplug the negative terminal of battery at least! Obviously you haven't dealt with the worst side of it but just curious if pulsar owners are getting random warning messages they don't attribute to the pulsar and just assume it's a fluke 🤷♂️
@@_____mh I haven’t got any, just some… “open and close driver side window” messages
@_____mh I've never had any codes other than the open and close window thing which has only popped up if my battery has been disconnected. I've had zero issues with the truck while running the Pulsar. Some people worry about fuel efficiency but I still get the same bald eagles/Budweiser with the Pulsar.
Not seeing any info if this will work on 23 gmc 1500 Denali 5.3 l v8
Their website lists their new version (not OBD2 interface)
DFM MODULE GM REFRESH
DFM Module for Refresh V8 models - 2021-2024 GM SUV and 2022.5-2024 GM 1500 Truck
Part #RA007
Great Video Don! Another way to verify that it works is to plug a good scan tool to your car and look at the Live data. If it’s truly working it’ll show “0” for cylinder deactivation cycles of all cylinders like when in L9 mode. I just purchased one of their freshly new released DFM deactivators for the GM refresh models and sure enough the scan tool said otherwise. Back to L9 I go.
The new disabler product made specifically for the refresh models didn’t work?
Feedback with the refresh style is that on some vehicles DFM is still activating on deceleration but not when at cruising speed.
@@Donslife At least for me it didn’t. I have a 2023 AT4 6.2
I have the 2024 duramax 3.0. Does it work on my truck. Hate the annoying start stop
I’d check out Autostopeliminator.com
I've been looking for a HD gasser to get away from dfm.
Can’t blame you
Oh OK I will let you know
I used one on my C7 Z06 no issues. My 2024 AT4 so far using L9 to disable. I rarely if ever need 10th gear.
I hear ya. I felt compelled to try this and share my experience after writing it off during the period it was listed as not compatible
Your Z06 must have been an auto. Mine was an auto. Sadly I couldn’t find a manual when I got mine.
@@Donslife I also looked when I bought my current AT4 ran across your video about putting it in L9, been using L9 ever since then.
@@dlang1009 Thanks for sticking around!
I would love to see you actually do the DFM/DOD delete with proper lifters and cam replacmen. Also I was told my warranty was void because I do my own oil changes and don't have work orders stating my oil was changed even tho I do keep a log book. So I am curious if you do your own oil changes. I am town between trading in, (I have a bit of positive equity) or just keeping it till the wheels fall off. It's not paid off so I'd be torn if the thing kicked the bucket while still under payments.
if you have the receipts for the oil and the filters GM can't deny warranty. If they do, fight them, as that is illegal.
@@BR549_o7 that's exactly what I thought. It's up to them to prove damage is done by lack of oil not for me to prove that I've done them. Is it not? I am a license heavy equipment tech and I've rebuilt a number of engines for our work crummys like 2.8l duramaxs I probably know more than those tards at gm service departments. Number one thing is I'd say about them is they lack compassion for their customers and just want you to trade in ur vehicle for another piece of garbage.
Ok, Don bought it and likes it, so just ordered mine! Best part for me is I have a ‘24 Sierra 5.3 and a ‘24 Silverado 5.3, so I can move it from truck to truck! No more L9!!!
If your’s is the refresh, make sure you picked up the right one
wait, so they now work with the refreshed models (2022.5 and up) with 5.3 Liter? I will have to look into this.
wait, so they now work with the refreshed models (2022.5 and up) with 5.3 Liter? I will have to look into this.
@@BR549_o7 not the one the plugs into the OBD that Don revived, only the one the plugs into the ECM. Verified this with Range support.
@@BR549_o7 not the one that plugs into the OBD that Don reviewed. For refresh it is the model that plugs into the ECM. I verified this with Range support.
Nice work! Bringing you ‘A’ game!