Range DFM Module Installation

[@roycejohnson6095]

I just installed this product today and so far, I'm happy with the product. I have a 2024 Silverado with a 5.3 and these results were evaluated by hooking up a "SCANNER" to the OBD port. Stock results (Range not installed) in drive or D Idle - All cylinders Acceleration - All cylinders Coasting - Cylinder deactivation Maintaining a constant speed - Cylinder deactivation Cruise control - Cylinder deactivation Stock results L9 or manual gear selection (Range not installed) - Just a side note when cruising in 10th gear and shifting from D to L it would drop to 7th gear Idle - All cylinders Acceleration - All cylinders Coasting - All cylinders Maintaining a constant speed - All cylinders Cruise control - All cylinders Range installed Idle - All cylinders Acceleration - All Cylinders Coasting - Cylinder deactivation - I expected this because it was mentioned on the web site. Maintaining a constant speed - All cylinders Cruise control - All cylinders - I was not sure if it would read all cylinders because there was not any physical input to the gas pedal, but it worked on my truck Like mentioned I just installed this product today and I'm happy with it so far. I'm glad it also activated all cylinders with cruise control turned on. I'm not looking to have a great sounding exhaust, and I understand the frustration of cylinders cutting out and creating a strange exhaust tone. I just thought this would be good info for you guys.

[@dstrych9636]

Been waiting on this new module! Just installed mine today on my 2023 Silverado 1500 6.2L. Glad to be rid of the DFM and Auto Shut-off! ...Thanks Range!

[@samuelwalton8964]

Officially ended my membership to the L9 club.

[@Bill-ck3lo]

I've had this installed for a week in my 22 refresh GMC Sierra 6.2L AT4. Never realized the instant power I was missing until now. Awesome product, no codes, no issues. Dropped about 2mpg but well worth it in the long run. Great product, and great video!!

[@rangetechnology8178]

Are you checking mileage hand calculated or off the dash computer? Most of our users don't see any actual change in mileage when checking by hand

[@Bill-ck3lo]

@@rangetechnology8178 I'm going by the average mile per gallon truck computer. Maybe I'll fill up and do the calcs.

[@AttommicDog]

@@rangetechnology8178 I could see a .5 drop maybe. Maybe.

[@wickedkool705]

I'll stick with the L9 trick for now. I want a version 2 of this with 0 cylinder coast disabled. Is there any sort of EPA rule preventing this? Remember agency rules are not laws.

[@rangetechnology8178]

@@wickedkool705 we have an update in development as we speak that will allow you to select which mode you run in. Our current version, or one that will disable the 0-cylinder mode as well. In our initial development, we determined not to release the 0-cyilnder deactivation as it created what we determined was a 'poor driver experience' and affected mileage substantially. But due to the demand from users, we'll offer both and you can choose!

[@machiavelli960]

Works great on my GMC 2022 Sierra 1500 Denali Ultimate. Super easy install completed in 15 minutes with no issues. Noticed quicker power on demand with the cylinder deactivation not enabled.

[@honubryant8116]

Great video. That's how you do an install video ! Take note all you youtube garage influencers who cut corners and don't show full details.

[@BGnick73]

This module and a healthy dose of BG MOA every oil Svc will only help these engines over all performance

[@sshelbyy08]

Grabbed mine. Thanks again for not leaving us hanging !!!

[@thestandardbearer6633]

Great location for a DCM, GM,,,,,

[@johnc3531]

lol. I was thinking the same thing.

[@TT-kf3pk]

Awesome, I just ordered mine. Thank you

[@21222eddie]

How do you like it

[@TT-kf3pk]

@@21222eddie I love it. Very simple 5 minutes to install or remove if necessary for service. Does as it say, disables auto stop start and afm /dfm. Above and beyond that it woke my 2023 5.3 trailboss up so it’s like a completely new truck. Sounds odd but the truck just runs and rides so much smoother. Obviously on take off and in town stop and go but like when cruising 35-45 or whatever the truck just runs more smoothly and coasts so much smoother. Sounds strange but Oddly enough to boot I have gained atm over 1 mpg even though I am driving the same of even harder. In my mind it’s because I am actually in the throttle less on daily driving because it does just idle and coast at speed so smooth. Perhaps shutting off cylinders also reduces power so it’s harder to maintain speeds without it disabling afm/dfm? Idk, don’t claim to be an expert there but I highly recommend it 💯!

[@21222eddie]

@@TT-kf3pk installing mine Friday on my 23 rst definitely looking forward to it because I got exhaust on the truck and when going on the highway, usually here like a helicopter because it shifts down to six cylinders now it should just stay deep rumble

[@TT-kf3pk]

@@21222eddie exactly, I actually am looking at exhaust now. ( leaning towards Borla S type) Trying to avoid drone. What do you have for exhaust, and let me know later after install how it pairs with this. Range. And of course when looking at exhaust cai go hand in hand imo. Do you have one that you like? You won’t be disappointed with this Range.

[@21222eddie]

@@TT-kf3pk I got a muffler, delete and regulator delete it sound so good and I’m adding daul exhaust tips Saturday

[@bluchevy01]

Just bought mine

[@21222eddie]

How do you like it

[@Viking690]

All these computers should be located in the engine bay in a high location. Or in cab. Not somewhere so low and close to the front of a vehicle when you're actually could be off-roading. A nice love tap probably shuts off the entire vehicle if it gets damaged in that area. GM engineering at its finest again. 😅

[@cssstl]

I just installed mine. It works great so. Thanks.

[@austinsmith8010]

any personal reviews for this new product? any known issues?

[@Shoe_Phonetic23]

Ordered mine today!

[@BridsEye1]

Got 1! Been waiting

[@custombuilder8495]

Works great, thanks!

[@The_Shark79]

I'm looking to buy a 2021 AT4 6.2L carbon pro. The original window sticker says it has Dynamic Fuel Management (like the newer years). It does not say anywhere *Active* Fuel Management. So, I am curious if I'd need this product or the one for the pre-refreshed trucks(which again, this is a 21). It's just confusing to me since this year should be AFM according to your video, but the window sticker says DFM. Any advice here would be spectacular.

[@rangetechnology8178]

For the 2021 model year truck, you need our AFM/DFM Disabler that plugs in to the OBD port, Part Number RA003

[@johnmcalisterjr3913]

Does it void your warranty or can the dealer use it to not cover a engine warranty

[@rangetechnology8178]

We always suggest removing it before dealer/warranty work. It will leave no trace in the system.

[@BR549_o7]

@@rangetechnology8178 that is kinda hard to do if your out and the truck does not start. What are we to do, quickly remove it while along side a busy highway, trying to remove it while traffic is flying past us at 70 MPH? This is on the drivers side, not the passenger side.

[@DavisInDuval]

@@BR549_o7kind of an extreme and rare scenario

[@Six_Rides]

Yes!! Ordered!

[@chuckgoodman3828]

Great!! Now make one for the 2.7 engines in the GM full-size and midsize trucks.😃

[@Roberto-gp3yx]

It should have been made to work with all engines 2.7/5.3/6.2 as the dfm system is the dumbest thing ever made it’s really dumb to have it on a 4cyl engine as they should be already fairly economical without the dfm system

[@ianzhang8337]

Since the 2.7 is not an OHV but DOHC, the thing that people worried about on their V8s with AFM/DFM is not even exist on 2.7. It uses different technic to deactive cylinders, which is much less problematic in the long run, so don't worry about you 2.7. It is a tough motor and was designed for demanding fleet trucks, I would say it is the most reliable motor on newer GM trucks. From my experience (plus what I have seen my co-workers did), longevity wise, 6.2 is the worst of the worst, 3 liter diesel is not far from it (it is actually ok, but the serviceability for this diesel motor is like hell, which jacks up out of warranty repair bills that you will hate yourself bought it in the first place), 5.3 is fair, 2.7 is the least problematic.

[@Roberto-gp3yx]

@@ianzhang8337 Interesting information… I do think this (2.7) engine is great but something baffles me as to why my engine crapped out shy of 100k and needed to get a new motor I don’t know if it was foul play from the dealership in order to get paid by the extended warranty company or if it truly had a catastrophic internal failure But only time will tell if there’s any other truck owners with this engine come about with the same engine misfire issue that resulted in my trucks engine being replaced

[@ianzhang8337]

@@Roberto-gp3yx Sorry to hear that, it is good, but not bulletproof. When I said 2.7 is the best, I mean it is the beat amoung all engine options on newer GM LT trucks, not the best in the world. You bought a GM (so did I), you know (and I know) what to expect. Wish your new motor last as long as you need it to be.

[@Roberto-gp3yx]

@@ianzhang8337 that’s what I’m hoping for as I had a 2015 Chevy Malibu reached 272,000+ miles unfortunately I lost it in a wreck last year or else I would’ve continued to at least 300K miles So I’m hoping to get near that mark with this truck

[@dannygonzales8422]

Installing the product does it hurt vehicle warranty

[@brandonflores2286]

I have a Yukon Denali that is from Canada would it affect anything at all ?

[@kristoferfc6525]

FIIIIIINALLY, when will the Pulsar LT for the refreshed trucks be available? Because the adjustment for tire size and throttle response would be amazing, thanks!

[@rangetechnology8178]

There is no ETA on Pulsar LT for Refresh applications

[@kristoferfc6525]

@@rangetechnology8178 bummer, is there any chance for it at all? even if you don't have an ETA

[@rangetechnology8178]

@@kristoferfc6525 At this time, no, we are not expecting Pulsar LT for the Refresh models anytime soon. That doesn't mean we've given up however...

[@kristoferfc6525]

@@rangetechnology8178 alright, fair enough, thanks for the info! debating whether to get my truck tuned for E85 or not, if I do they can disable autostart and DFM while they're in there. Otherwise I'll get your module

[@bmacias]

On the old style I believe that it was recommended to unplug the device if the truck was not driven for several days to preserve the battery. Due to the installation difference in this version does it also suggest unplugging it too?

[@jaredtaylor7777]

I doubt it. The older version had an LED light this one does not.

[@BR549_o7]

@@jaredtaylor7777 I dont know if the LED lights made a difference, because I heard if truck is off, the LED's are off also.

[@XxMissingDataxX]

Just to be clear here. This works for the 2023 gmc 1500 Denali running a 5.3L ? Also when we go into dealer services do we need to clear any DNA that this thing ever exist? Will this avoid warranty?

[@rangetechnology8178]

Yes, this is compatible with 2023 5.3L 10-speed. We suggest removing it for dealer services, it will not leave a trace in the system.

[@ap8721]

Even when you take truck for oil changes?

[@XxMissingDataxX]

@@ap8721 I would say yes

[@carltiefenthaeler5763]

Yes, dealerships plug their computer into the port and make sure everything is operating correctly, so even on oil changes !

[@jasonfetterman2969]

The OBD module required removal and driving prior to state inspection/emissions testing. Does this require the same?

[@rangetechnology8178]

No

[@c.a.n.4202]

I have a 2023 GMC Sierra AT4 but my 12 digit in the VIN is a '3'. Why wouldn't this be compatible?

[@dstrych9636]

Someone correct me if I’m wrong, but from what I’ve seen on the Range website, it only mentions the 2022.5 specific VIN models. Not sure it specifies anything about AT4’s.

[@rangetechnology8178]

This device works in ALL 2023 and 2024 models

[@c.a.n.4202]

@@rangetechnology8178 thank you for clarifying

[@sparker2289]

I installed mine today and it's still dropping cylinders. I disconnected the negative terminal. Installed and made sure it was clicked in and reinstalled negative. What do I do now?

[@rangetechnology8178]

Some applications may still experience cylinder deactivation on deceleration when 0% throttle is detected at slow speeds.

[@sparker2289]

@@rangetechnology8178 inwish that was in the fine print before I bought it.

[@austinsmith8010]

@@rangetechnology8178 is there any current plans to upgrade these devices to prevent this?

[@sparker2289]

@@21222eddie whenever I'm coasting.

[@grooveuniverse]

Hmmm so when the gas pedal isnt used like for cruising, cylinder deactivation happens? ​@rangetechnology8178

[@SunnyVancity]

GM needs to make V8 without DFM as an option

[@BridsEye1]

🎉

[@mpeters5549]

Does the 2020 GMC AT4 6.2 shut cylinders off?

[@rangetechnology8178]

Yes, our RA003 OBD module is a simple plug in module to disable that feature

[@felixavila9619]

Will this work in a GMC DENALI 6.2 2024

[@timdually5843]

Do the monitors still set to ready/complete with it plugged in and it will work with a 2021 Silverado 5.3 10 speed auto

[@rangetechnology8178]

The 2021 model year truck would use our other Disabler device, the RA003

[@GarrettFlinner-y3c]

Whenever it’s installed, does the amber light still light up as if the auto start/stop is engaged? Or does it automatically shut itself off. I think I saw with the Pulsar it shuts off but with the OBD2 plug in it stays on. As long as it does the job that’s all that matters im just curious. Thanks!

[@rangetechnology8178]

The Auto Start Stop feature will be disabled at all times with this module installed. We do not make any changes with the in-cab button or dash display however. So your factory button will still default to it's factory setting and illuminate when you start the truck as it does without our module installed. The light on the button will go off if you press it and the dash emblem will come on, just like it functions stock. But regardless of whether you have the in-cab button on or off, the Auto Start Stop feature will always be off with our module installed.

[@GarrettFlinner-y3c]

Thank you for the nice speedy response, i currently lease my truck, this would be safe to use just unplug before any dealer work or check ups? Ive just been trying the L9 trick recently and what a difference it makes. Thanks again. Would love to see a pulsar for the refresh in the future but this product right here does everything we need off the rip!

[@rangetechnology8178]

@@GarrettFlinner-y3c Yes, you can easily remove the device for dealer service

[@BR549_o7]

@@GarrettFlinner-y3c I'd keep using L9, as this product is not 100% V8 all the time. Read the fine print.

[@SunnyVancity]

The description states all time v8 power on there website

[@smokeypanduh]

Whats the note about the VIN on the page? My 12th digit is a "1" the note says it needs to be a 5 or higher. Confused, does that mean it won't work on Custom Trail Boss? Already ordered before I saw the note..

[@rangetechnology8178]

That is only specific to 2022 model trucks, to help you determine if you have a 2022 or 2022.5. This works in ALL 2023 and 2024 models

[@NextEraCustoms]

do you offer a device that I can use on a 2019 Silverado 5.3 that i used with non DOD cam and lifter swap to short ones. with the valley cover connector disconnected since I removed the solenoids ?

[@rangetechnology8178]

You would need to look into a custom tuning device like something from DiabloSport

[@1cor12_]

Does this interfere with operation of the power running boards?

[@rangetechnology8178]

No, we've tested extensively with power running boards and have had no issues. Some Amp'd step kits will just need their main power fuse pulled, and reinstalled after the battery has been disconnected for our module installation.

[@brandonsmith3219]

@@rangetechnology8178 Mine is throwing an engine light and temp is reading -40

[@rangetechnology8178]

@@brandonsmith3219 was this right after installation? Did you unhook the battery before disconnecting the PCM? If not, the control module just needs to resync, which takes just a few drive cylces.

[@ap8721]

Do I need to removed device when o take my truck just for an oil change?

[@rangetechnology8178]

We would suggest removing the device anytime you visit the dealer to avoid any issues. But it may not be required.

[@GeorgeTorrey]

Do you need to unhook the battery before installing

[@rangetechnology8178]

yes!

[@ecmnfarm2265]

I have a 2023 chev 1500 with a 6.2 with a 2 in the 12th spot, is this compatable with my truck? Thanks.

[@rangetechnology8178]

This is compatible with ALL 2023 and 2024 models. The vin characters are only specific to 2022 models, to help determine if you have a 2022 or a 2022.5

[@PatrickRMartinez]

Make one for the 2021 and newer f150 coyote 5.0’s

[@rangetechnology8178]

We do not have Ford support yet

[@nickrd182]

Any plans to make one that doesn't disable Auto Start Stop, and just disables the DFM? I'm only interested in prolonging engine life, could care less about emissions/power.

[@rangetechnology8178]

No, this will be the only disabler device we offer for this application

[@BR549_o7]

uh, auto start/stop does hurt the engine just as much as DFM. Best to get rid of both of them.

[@brandonsmith3219]

Mine is throwing an engine light and temp is reading -40 Any help?

[@Bill-ck3lo]

Are you in Canada with temps like that?? LOL I didn't get any errors, and disconnected the negative term. Did you do that first?

[@daveatkins4022]

Do you have to remove it when getting a sticker?

[@BR549_o7]

it depends on what the sticker says.

[@DJRIKSTA]

Can you guys show how to install on the new escalade?

[@rangetechnology8178]

installation is the same on truck and SUV

[@Top5-b1r7q]

Why do we need to disconnect the neagtive battery cable? I just installed wine with out doing so.is it just a disclaimer to protect you guys?

[@chuckgoodman3828]

Disconnecting the negative battery cable is recommended and normal procedure for any electrical work on vehicles in order to protect the computer and modules from electrical spikes. Consider yourself lucky that nothing happened to your truck.

[@rangetechnology8178]

We would never recommend or suggest disconnecting the ECM harness with battery voltage in the system.

[@peterpizzurro]

It's been recommended to disconnect the negative battery cable while working on a vehicle since the vehicle was invented.

[@BR549_o7]

@@peterpizzurro was not really a big deal until computers started to show up though.

[@kendean2119]

I have a 22 Chevy Silverado 1500 WT I ordered the first one and plugged it in under the dash in the OB port didn't work Send it back got my money back now I waited this long to get this updated version for my refresh Silverado Took the cover underneath the fender off plugged it into the bottom port just like the video shows got back in the truck took it around the block and guess what I'm still having cylinder shut down at a low idle and then when the truck finally comes to a stop it's almost like somebody pulls a plug out of my exhaust and it kicks back in and you can hear the exhaust come back to life I know this because I had dual exhaust put on my truck and when I drive around in L7 there is no interruption in my exhaust note but when I drive it in drive and I let off the accelerator the truck goes quiet even though I am still moving and until I either hit the accelerator again or come to a complete stop the truck silent but even at a dead stop again it's like somebody pulls a plug out of my exhaust and I can hear it again so that tells me this device is not keeping all eight cylinders on the whole time Very disappointed just got it yesterday put it on tonight and it sounds the same as it did before the install again if I put it in L7 it's a totally different truck and there is no interruption in the cylinders anybody else having this issue

[@rangetechnology8178]

Have you contacted our tech support team? This product should work flawlessly with all 2022.5+ Refresh models with the 5.3L and 6.2L engines.

[@BR549_o7]

@@rangetechnology8178 Does this product not say that during low rpm with foot off throttle and coasting, that DFM could still be engaged?? Are you saying this is 100% all 8 cylinders all the time?

[@rangetechnology8178]

@@BR549_o7 the engine going to 0-cylinder mode while coasting is a little bitt different than full DFM. We've done extensive testing and there is only one way to keep all 8-cylinders on while coasting, and that change caused a MASSIVE drop in fuel economy in our testing (2-3mpg), and you lose the built in engine braking, made for a not so pleasant driving experience, enough we chose to not incorporate that feature in the product. So until we discover another way to get around it, the engine may still go to 0-cylinders while coasting/decelerating.

[@BR549_o7]

@@rangetechnology8178 so, in the end, what is the difference from stock? In stock, the truck will never go to 0 cylinders when on the throttle, but will when coasting. Is the range guaranteed to be 8 cylinders "anytime" throttle is on? But it goes back to stock when off the throttle or braking.

[@rangetechnology8178]

@@BR549_o7 correct. The engine will run in V8 mode ALL THE TIME when throttle input is detected. There are instances where at 0% throttle input (coasting/decel) it may still enter 0-cylinder mode, but never while cruising or accelerating.

[@TheJesmarcos]

Do you have to disconnect the battery ?

[@mach5jeep]

yes

[@rangetechnology8178]

We STRONGLY suggest it to avoid any voltage being present within the ECM when the harness is disconnected to prevent a potential issue. These vehicles will also continue to feed the modules power even after you've shut it off for a few minutes. So disconnecting the ECM harness before it's completely powered down, could cause a check engine light that would need to be cleared with a scan tool the first time the vehicle is restarted. To avoid any issues, we do suggest disconnecting the battery.

[@machinelab]

Is it possible to ship to South Korea? Is it possible to buy from Amazon?

[@rangetechnology8178]

We do not currently ship internationally, but I'm sure you'll see it available on Amazon as soon as some of our dealers that use Amazon stores have inventory and can get them listed.

[@machinelab]

@rangetechnology8178 understood. I'll share the information with my South Korean friends. I bought one yesterday. I received the ups number by e-mail. Thank you.

[@LuisReyes-nw7se]

Will this work in my 23 Suburban with 5.3 litter?

[@ryanmoore3123]

Yes

[@rangetechnology8178]

Yes

[@elkhornpetersen1894]

What about the 2020 GMC AT4 Sierra?

[@rangetechnology8178]

For 2020 models, checkout our RA003 devices

[@elkhornpetersen1894]

Thanks 👍🏼

[@rogeralvarado9053]

Just installed mine start/stop light still on .whatsoever it mean

[@mach5jeep]

The Auto Start Stop feature will be disabled at all times with this module installed. We do not make any changes with the in-cab button or dash display however. So your factory button will still default to it's factory setting and illuminate when you start the truck as it does without our module installed. The light on the button will go off if you press it and the dash emblem will come on, just like it functions stock. But regardless of whether you have the in-cab button on or off, the Auto Start Stop feature will always be off with our module installed.

[@seaverelliott1310]

Does the module still continue to drain the battery while it’s connected even when the vehicle is off?

[@rangetechnology8178]

We have no battery drainage issues with our devices

[@danielcastorena3057]

Doesn't work with AMP steps 😢😢😢😢 just installed mine and sure enough took it off and amp steps work again. Amp steps are plugged to obd port

[@MYCELPOLLO420]

damn

[@chrisimes478]

Is this still the case? I already ordered mine and it’s on its way, but I have ANP steps and that is a priority. Have you talked with Range about this?

[@danielcastorena3057]

​@chrisimes478 No, when installing make sure you disconnect AMP step Fuse. Reconnect after reconnecting negative post and you should be good.

[@chrisimes478]

@@danielcastorena3057Thank you SO Much for the reply. My module will be here Thursday and I got worried

[@bradtswims]

Why is this installation so much more time consuming and different than the previous gen? Should just be able to plug into the OBD port instead of pulling out fender liner etc...

[@hustleman4880]

He said you can't communicate with the ecm through the obd on global b platform. So the module plugs directly into the ecm.

[@peterpizzurro]

Because it's different.

[@BR549_o7]

times change, do you still have a vacuum tube black and white TV??

[@usmc2044]

You forgot to tell them that they will be replacing a transmission next.

[@austinsmith8010]

@@usmc2044 why’s that???

[@usmc2044]

It keeps your vehicle from going into four cylinder mode when it should. Causes heat in the transmission which is killer of trannys.

[@MSDTmike-i5o]

Still feels like it's dropping cylinders on my 22 ZR2. The whole point is to stop the motor from hurting itself....grrr

[@rangetechnology8178]

The vehicle will run on all 8 cylinders any time it detects throttle input. 0-cylinder mode can still engage while coasting/deceleration

[@jamscrew]

Will this work with the 2024 GMC Sierra 1500 Denali?

[@rangetechnology8178]

yes

[@eliharper77]

2023 trail boss 5.3 , 12th digit in vin is a 2. Will this work on my truck ?

[@rangetechnology8178]

This module works in ALL 2023 and 2024 models

[@eliharper77]

@@rangetechnology8178 awesome thanks for response, will have mine Thursday

[@sshelbyy08]

Installed mine yesterday. Discontinued negative terminal. Installed module. Truck would not start untill I rolled down drivers window and rolled back up. Truck started everything ran fine. Remote start works. Question is how do I know that the start-stop is disabled? Light for start-stop is still lit. Also how do you know it is not going into deactivation mode?

[@rangetechnology8178]

We do not interact with the start stop switch on the dash at all, so it will still illuminate as factory. But the system will not work with our module installed, regardless of what position the switch on the dash is in.

[@patricknichol6158]

Did you get any other error codes or instructions other than windows up/down?

[@sshelbyy08]

There are no other issues. Truck runs fine. So far so good.

[@peterpizzurro]

When you stop, does the engine shut off? Seems like a pretty easy thing to diagnose.

[@Jagman2919]

Can this be used on a 2020 trail boss LT?

[@rangetechnology8178]

This device is specific to 2022.5-2024 model years. For a 2020 truck, look at our RA003 AFM Disabler

[@throneofdavidministries3674]

Installed today 24 Silverado 6.2. Everything seems to be working fine but engine light is on. Any advice? Going to redo the install steps!

[@malcompitts4590]

Mine made a serious arc, when I connected neg. battery cable. I am letting it go unsalted for a week to see if battery drains. We will see what happens.

[@throneofdavidministries3674]

My engine light went off on its own. I had driven to town and back. Parked for the night and next morning it did not come on and everything is looking good. No problems.

[@malcompitts4590]

Mine seemed to install fine, but when I put the neg. cable back on battery it arced bad. I thought it might be drawing down battery. So I waited a week to crank again. Battery was down 2-3 volts. Makes me uneasy.....

[@1cor12_]

Do NOT keep the key FOB anywhere near you when disconnecting the battery. Suggest placing the FOB in a faraday box. Your vehicle senses the key FOB and will draw current with it near the vehicle.

[@virtualdru]

My 2024 AT4 has a “3” for the 12th digit, not sure what that means.

[@rangetechnology8178]

This device works in ALL 2023 and 2024 models

[@virtualdru]

@@rangetechnology8178ordered first week, been running it since. This is a must have product! Def recommended. Thank you so much!!!

[@michaelfenton4878]

Only works with 12th digit of the VIN 5 or higher? What kind of crap is this? I got an email that this product was available and called to place the order over the phone. No one told me that my VIN had to be a 5 or higher. No I have to go through the hassle of sending it back. This is the second time I got screwed by these guys. I bought a Pulsar LT in 2022 for my Sierra 2022 refresh. I called three times telling them I had the refresh and asked if it would work. No one seemed to even know there was a 2022 refresh. Isn't that their job? To know what vehicles are coming to market and whether or not their products are supported? I bought the Pulsar and didn't work with my vehicle. Lucky for them that nothing fried. Called again and told them it didn't work and someone finally told me it didn't work with the refresh. Now it happened again. How hard is it to make a product that works for everything. I now have a 2024 Sierra Dinali. This is supposed to support all of the refresh vehicles. Now I found out the 12th digit of my VIN needs to be 5 or higher. WTF. These people are idiots.

[@rangetechnology8178]

That VIN information is only required if you have a 2022 model year truck. If the 12th digit is a 5 or higher you have a Refresh and need our new RA007 device. If the 12th digit is a 4 or lower, it is not a Refresh and you need our older RA003 device. All 2023 and 2024 models will use the RA007

[@mrm40]

@@rangetechnology8178 Does this work with 2022 suburban in Canada ?

[@1micYT]

So a device to drink more gas. No thanks!

[@austenslost]

Enjoy paying for new lifters

[@rangetechnology8178]

most of our users have actually seen a small increase in mileage.

[@21222eddie]

Stop crying you can go buy v6 if you wanna save gas who buys V-8 the safe gas? 😂😂😂😂

[@1micYT]

@@21222eddie Several people. Just because it’s V8 doesn’t mean people aren’t fuel conscious.

[@21222eddie]

@@1micYTwell don’t cry

[@ap8721]

Anyone had issues after installing this device with loud noises coming from ECM after shutting off the truck? Or how about hard shift?

[@rangetechnology8178]

We've had no reports of transmission changes

[@ap8721]

Do I need to removed when I take truck just for oil changes?

[@Andyski-h9r]

If you go to the dealership, I wouldn't give them the opportunity to deny your warranty.