[Dochawk]

CJ- I’m not mechanically minded but I’ll tell you what they told me. The initial “cardboard tube filler” repair was not successful bc that was a band aid to absorb the resonance. The regional can am guy said that the front and rear drive assemblies should be balanced when the unit is built, but that has not happened much apparently based on the number of people having issues.
My dealer pulled front and rear drive assemblies and had them balanced at a shop locally there. When they reinstalled them and tested it he said it got rid of around 75% of the rattle. From there he said they drilled a hole in what I believe to be just the rear shaft and filled it with oil to absorb the remaining vibration and sealed it up.
I have rode around 12 hours the past 2 weekends at our ATV park and run through all scenarios of 2W/4W high/low active/trail active combinations and have not been able to create any of the rattle sound that I grew to hate so much. I don’t know where you are at regionally, I’m down in southern Missouri. I guess if you found a dealer with good service department I could give you the name of my dealer and maybe they could detail what needs to be done? I don’t know if that is an issue with it not being a “can am” produced fix for this, but if you are out of warranty I guess it wouldn’t matter bc it wouldn’t void anything. I will say it’s a totally different riding experience once you aren’t watching rpm’s to avoid the rattle and instead just enjoying your ride. Let me know if you want dealer name, I’m happy to help.

 

[cjhoff63]

Dochawk - Thanks for the info. I am dropping it off on Thursday at the dealership, because Can-Am told me they will not even discuss it, if it is not physically at the dealership. It has made the sound/vibration you have described since it was brand new, and has gotten worse with each mile I have put on the vehicle. I only have around 600 miles on it, but my kids wear muffs in the back because they say it is too noisy when I'm on the trails, but OK if I am going down a gravel road at higher speeds.
I am in Northern MN so the Region guy will be different I am sure. If you wouldn't mind, I wouldn't mind talking with your dealer to get all the details. I sure would like to get this fixed before fall when we do most of our riding. If I get mine fixed I will also share what was done.

 

[Dochawk]

CJ- look up Mega Motorsports in West Plains, MO. Ask for service department and I’m sure they can give you some insight or point your dealership in the right direction.

 

[Dochawk]

CJ any luck getting your rattle under control?

 

[cjhoff63]

I was told that mine was built with an older shaft. The dealer just got the new shaft in on 9-8-22. With any luck I will have it back this week to see if it made any changes.

 

[Donnie73]

We have just over 100 miles on our 2021 Commander Max XT 1000R. There is a loud vibration noise in 2 Wheel drive when accelerating up to about 4500 rpm then it smooths out. When running in 4 Wheel Drive the vibration does not occur and it runs smoothly regardless of rpm. Seems to be coming from underneath the center of the vehicle not really the back where the engine is located. As a result we run in 4 Wheel drive all the time. Mentioned it to the dealer they told us to drive it a bit more and if it continues they are going to take a look at it. Brand new machine so it is disappointing. Anyone else having similar issues or ideas on what it could be?

I have the exact same issue with my 2021 Commander 1000R DPS. I took it in last summer to have it looked at under warranty and they supposedly replaced the carrier bearing but it didn't help. I took it back again and they told me it was out of warranty. I have been looking at this for a while online and its a very common issue, I was hoping to finally find someone that can actually say they have fixed the problem and share how they did it.

 

[cjhoff63]

Quick update on my 2022 Commander Max XTP. The dealership replaced the rear drive shaft going from the transaxle to the front diff, and I would say this fixed 80-90% of the noise/vibration. Mine used to vibrate and make the noise from 18-32mph. The shaft itself is definitely different. The shaft they took out sounds like a bell if you hit it with the wrench, and the new one just has a thunk sound. Can-Am told my dealership that the noise is being generated from the engine/transaxle, so the shaft is a band aid, but I'll take it as it is drivable again! I only hear the sound randomly now. If I accelerate slowly it is gone, if I accelerate hard, it is gone, it's just a half throttle type accelerate where you are more like lugging the engine, but it comes and goes quickly now. I believe the people that have mentioned filling the shaft with oil would be a good fix to deaden the sound and make it go away. I am planning on filling my front shaft with oil to deaden that one out, but that probably won't happen until winter when get a chance to work on it, and not driving it anymore. So the new shaft does help a lot, worth the time to get it replaced in my opinion. I would like to hear if anyone has filled the older shaft with oil and if that has done the same thing.

 

[RJohnson]

Quick update on my 2022 Commander Max XTP. The dealership replaced the rear drive shaft going from the transaxle to the front diff, and I would say this fixed 80-90% of the noise/vibration. Mine used to vibrate and make the noise from 18-32mph. The shaft itself is definitely different. The shaft they took out sounds like a bell if you hit it with the wrench, and the new one just has a thunk sound. Can-Am told my dealership that the noise is being generated from the engine/transaxle, so the shaft is a band aid, but I'll take it as it is drivable again! I only hear the sound randomly now. If I accelerate slowly it is gone, if I accelerate hard, it is gone, it's just a half throttle type accelerate where you are more like lugging the engine, but it comes and goes quickly now. I believe the people that have mentioned filling the shaft with oil would be a good fix to deaden the sound and make it go away. I am planning on filling my front shaft with oil to deaden that one out, but that probably won't happen until winter when get a chance to work on it, and not driving it anymore. So the new shaft does help a lot, worth the time to get it replaced in my opinion. I would like to hear if anyone has filled the older shaft with oil and if that has done the same thing.

C

Quick update on my 2022 Commander Max XTP. The dealership replaced the rear drive shaft going from the transaxle to the front diff, and I would say this fixed 80-90% of the noise/vibration. Mine used to vibrate and make the noise from 18-32mph. The shaft itself is definitely different. The shaft they took out sounds like a bell if you hit it with the wrench, and the new one just has a thunk sound. Can-Am told my dealership that the noise is being generated from the engine/transaxle, so the shaft is a band aid, but I'll take it as it is drivable again! I only hear the sound randomly now. If I accelerate slowly it is gone, if I accelerate hard, it is gone, it's just a half throttle type accelerate where you are more like lugging the engine, but it comes and goes quickly now. I believe the people that have mentioned filling the shaft with oil would be a good fix to deaden the sound and make it go away. I am planning on filling my front shaft with oil to deaden that one out, but that probably won't happen until winter when get a chance to work on it, and not driving it anymore. So the new shaft does help a lot, worth the time to get it replaced in my opinion. I would like to hear if anyone has filled the older shaft with oil and if that has done the same thing.

CJ,
You said Can Am told dealer it was a band aid, did they say if something else is in the works. I had same thing done to mine and the sounds did dissipate but it is still there just a low rumble you feel at a certain speed. The loud sound is all gone. When ever in 4 wheel on a dirt road or trail the rumble is VERY pronounced you can here it and quickly goes away when back to 2 wheel. SO if it is coming from engine trans axle that would mean a more long term issue they are not wanting to fix.

 

[cjhoff63]

From what I heard they were working on it, but not sure if that was for a fix, or

C CJ, You said Can Am told dealer it was a band aid, did they say if something else is in the works. I had same thing done to mine and the sounds did dissipate but it is still there just a low rumble you feel at a certain speed. The loud sound is all gone. When ever in 4 wheel on a dirt road or trail the rumble is VERY pronounced you can here it and quickly goes away when back to 2 wheel. SO if it is coming from engine trans axle that would mean a more long term issue they are not wanting to fix.

From what I heard they were still trying to figure out how to address the issue as it was from the transaxle/engine. My guess is it will not be a fix, but a model year change at some point.

 

[albertoCL]

Hi to all... I have the same issue with a brand new 2023 Can-Am Commander Max XT (model year 2022). The rattle start from the day one, and also in park condition. Over 4700 rpm, is smooth like a kitten. So the drive shaft isn't the problem... I'm thinking the rattle could be due to poor fuel mixture. Perhaps BRP make the fuel/air mixture poor in those RPM ranges ir order to comply with emission standards. Maybe that's why BRP doesn't want to fix the root problem. Modify emission can be a huge pain in the butt and to much costs. Has anyone try to change the fuel/mixture map using dynojet ECU or something equivalent?

 

[RJohnson]

Alberto,
I don't know about a fuel/air mixture idea. My dealer fix took away all the loud noise it used to make.Folks would stare at you if you hovered at the problem speed. But now it is just a muffled low rumble feeling in 4wd only. They say oh that is normal which is BS. I now ride numerous trials and washes behind my house, no noise at all any speed but as soon as you go into 4wd the low rumble comes in and goes out back in 2wd. So I am still leaning to trans axle problems. When my warranty and everything expires I will most likely take it apart myself unless it breaks before that so far so good.

 

[albertoCL]

Alberto,
I don't know about a fuel/air mixture idea. My dealer fix took away all the loud noise it used to make.Folks would stare at you if you hovered at the problem speed. But now it is just a muffled low rumble feeling in 4wd only. They say oh that is normal which is BS. I now ride numerous trials and washes behind my house, no noise at all any speed but as soon as you go into 4wd the low rumble comes in and goes out back in 2wd. So I am still leaning to trans axle problems. When my warranty and everything expires I will most likely take it apart myself unless it breaks before that so far so good.

But if it is the trans axle, why do I have the sound and the rattle in park?... That is my idea that it may be the engine and its fuel mixture...
I have a friend that had a very very similar issue with a BMW bike (the big ones). And the issue was the fuel emission map in the ECU. Very lean mixture in certain rpm ranges due to emission regulation. He re-map the ECU and problem solved.... Anyway, it's just a theory. I will try to buy the dynojet ecu flash and change the fuel map. I will let you guys know if a make some progress. Regards.

 

[RJohnson]

But if it is the trans axle, why do I have the sound and the rattle in park?... That is my idea that it may be the engine and its fuel mixture...
I have a friend that had a very very similar issue with a BMW bike (the big ones). And the issue was the fuel emission map in the ECU. Very lean mixture in certain rpm ranges due to emission regulation. He re-map the ECU and problem solved.... Anyway, it's just a theory. I will try to buy the dynojet ecu flash and change the fuel map. I will let you guys know if a make some progress. Regards.

Alberto, This thread was for noise from drive line at certain speeds. If you are having noise setting still in park you have a whole different issue, mine never did that. Either way if you have a warranty take it back and leave it till something is done, more trips over and over adds up to Lemon Law return, at least in AZ.

 

[Ginger Giraffe]

You’re not having the same issue we are. For those that are still experiencing this, I called BRP again today because they’ve had an open case for almost 6 months with zero correspondence back to my dealer. This machine has been plagued from the first ride, almost two full years. They simply do not care.

 

[SuperATV]

We have the prototype done for the a CV prop shaft and new carrier bearing. This should drastically help quiet the noise and vibration in the driveline. We discovered that the issue is likely the backlash in the transmission, and without completely redesigning the trans....there's really no fix. So....the trick was to attack it from the prop and carrier by bringing the noise RPM down. I got to check out the prototype today, and the noise had all but disappeared. Hopefully it works the same on all of yours.

 

[Ginger Giraffe]

We have the prototype done for the a CV prop shaft and new carrier bearing. This should drastically help quiet the noise and vibration in the driveline. We discovered that the issue is likely the backlash in the transmission, and without completely redesigning the trans....there's really no fix. So....the trick was to attack it from the prop and carrier by bringing the noise RPM down. I got to check out the prototype today, and the noise had all but disappeared. Hopefully it works the same on all of yours.

That’s awesome, glad you folks recognize the problem here. Given that Can Am is unlikely to fix all of these defective machines, how much could we expect to pay for Super ATV’s solution?

 

[SuperATV]

That’s awesome, glad you folks recognize the problem here. Given that Can Am is unlikely to fix all of these defective machines, how much could we expect to pay for Super ATV’s solution?

Not sure on pricing yet. Probably around the same as the other props and carriers we sell. Probably around $600 or $700 for the shaft and the carrier together.