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Rear end howl noise / Dealer claims is a normal sound

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37K views 89 replies 30 participants last post by  atgkhoury  
#1 · (Edited)
I highly doubt it is normal but I wanted to just check with others that are familiar with our cars.

For several months I've had this weird howl/whine noise. It only starts at about 55-60mph and only does it when the gas is pressed down. Dealer has replaced my rear differential twice and the noise has not gone away. The longer I drive the loud the noise gets and it's gotten louder compared to when it first started several months back. If I am just driving on normal city streets it doesn't make the sound at all. It's not unless I'm up to speed in 5'th and 6th gear.



This is the video after a 2 hour drive after picking up my son. This was taken the day after getting my car back from the dealer stating it's a normal sound. It's me going from a stop and slowly increasing speed. The noise kicks in about 12 seconds in which is about when I hit 60mph. The video doesn't do justice on how loud the sound actually is.








I've heard several things from others on Facebook from me just needing to change out Transmission fluid to it being something with a carrier joint etc. At this point the dealer said they are done with it since a Chrysler Field Tech has officially declared the noise as a regular operating noise. So now I'm left figuring it out by myself (I live in Iowa so the next nearest Dodge dealer is a little ways away). My car is completely stock aside from Blastin Bobs resonator delete. The sound was present prior to be installing that though so I highly doubt it's exhaust related.
 
#2 · (Edited)
that sounds like differential noise to me - and yours tends to do it under load...

I listened to your clip with earphones.

My '09 [6-speed] starting doing this @ ~ 45-55 mph (any gear) and got worse where one resonance 30/35 45-60 and another 70/80 mph and got louder. Mine was doing it all the time (load/coast / steady cruise) and would make more noise during hard curves in the road.

The QC on the Getrag 226 units seems to be inconsistent - your experience of multiple replacements and not further assistance is what made me decide to trade in the '09 and order the '16 I now have.

I had a cumulative 3 1/2 week ordeal and three trips to the dealer [initial diagnosis, pick car back up as I had shows, then a return trip when the diff arrived (damaged in transit, then order 2nd unit)] - the final trip was when I decided I was "done" with the issue.

Once they get noisy - it gets worse. Mine got progressively worse over the next 2K (and this was even with changing the diff fluid) to where it sounded like an old washing machine with worn out bearings in the spin cycle...
 
#3 ·
How many miles on this diff? How many since the fluid was changed (if ever)?

Some folks on here have had the same whine develop over time, have the diff replaced, it goes away at first and eventually, slowly comes back. As odd as it sounds, what has worked for some folks is replacing the diff fluid. Someone replaced theirs with Royal Purple 75w90 and the whine never came back. No idea why that would do anything, but the harmonic whine at freeway speeds has been a regular complaint for as long as I can remember.
 
#4 ·
How many miles on this diff? How many since the fluid was changed (if ever)?

Some folks on here have had the same whine develop over time, have the diff replaced, it goes away at first and eventually, slowly comes back. As odd as it sounds, what has worked for some folks is replacing the diff fluid. Someone replaced theirs with Royal Purple 75w90 and the whine never came back. No idea why that would do anything, but the harmonic whine at freeway speeds has been a regular complaint for as long as I can remember.
The car right now has about 24k miles or so. This current differential I have now has about 150 miles on it. This is my third differential counting the original one on the car.
 
#7 ·
Spoke to the dealer earlier and they had me drop my car back off with them. They hooked it up to a hoist and a scope or whatever and confirmed the sound is 100% the differential. They drained out the fluid and put in a heavier weight and said it quieted the noise down but it's still there. They are ordering me another differential (4th one if you count the original)

I wonder what aftermarket options exists for the rear differential that would make me not have to deal with it any more if it still continues after this new differential.
 
#8 ·
#10 ·
#11 ·
4th time being replaced? I'd say you are reaching Lemon Law territory. That might help you get out of that car, and into a nice 2016. Read your owners manual, there should be info in there regarding the Lemon Law.
 
owns 2023 Dodge Challenger Scat Pack Wide Body
#12 ·
I don't know if the OP bought new or not, but the lemon law in Iowa expires after 2 years or 24,000 miles from when the car was sold new.
 
#13 ·
Well, I spoke with the dealer today. They brought another offer to the table while we wait for the new differential. They said they would be willing to give me $25,000 for my 2013 R/T Classic with 27k miles on it. I was wrong from what I said before with 24 so that's my bad..

They are willing to give me $25,000 trade in (basicaly what I paid for it) for a 2009 Torred SRT8 that they have for sale for $24500 with 30k miles on it. The difference in price between trade in value and the cost of the 2009 about evens out (or at least comes close) to what I'd be underwater since I have only made a few payments on the car already.

The SRT8 looks sweet, Has GPS, Sunroof etc. the few features I currently do not have.. It is an auto where as mine is a manual though so that sucks.

Would it be pretty stupid to take them up on that offer and trade in a 2013 for a 2009 that is 4 years older? It'll have no warranty on it since it's past the certified age. Or should I make them continue to figure out the issue and hope if this next differential doesn't solve it that they do not just go back to "it's normal and we are done"? If I could afford a newer one I would look in to that but I can't.
 
#14 ·
I wouldn't take that deal, no. 4 years older, older styling, 6.1L isn't much of an upgrade over a 5.7, no warranty as you said. Have to wonder why the dealer would rather get you to buy a different car than get paid to fix yours. Then again, $25,000 trade-in for your '13 isn't bad. If they'd give you $25k for it regardless of what you bought and you're open to getting into a different car then I'd seriously consider that, I just wouldn't pay basically the same price for a car that's 4 years older, more miles, and no warranty. Doesn't matter that it's an SRT8. I'd take a 2011+ R/T over a 2008-2010 SRT8.
 
#19 ·
I have a 2016 Scat Pack Shaker and that whine has started in mine at 3,800 miles. The dealer offered to put in a heavier fluid. Has anyone checked if the original fluid has metal dust or heavier shavings in it when it is drained? Seems kind of crazy to change the fluid to something thicker and then have the whine appear again, then to change the differential to have it whine again.......

Any comments?
 
#20 ·
There is a TSB for the 2015+ 392 and Hellcat cars to replace the driveshaft due to whining. Tell the dealer to stop experimenting on your car and perform the TSB. :)


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#24 ·
Any more info on this TSB would be appreciated! Thank you! I am not sure how to convey this information to my dealer.......


See my post right above your last one. :)


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#26 · (Edited)
Well, It's now almost January and the dealer refuses to assist me any further. It's been since early November I think that I've last been able to get in contact with anyone at the dealership. They do not return any calls or emails at all and I have gone twice in person and told no-one was available to assist me and to come back. The differential noise has increased significantly in that time and I don't even drive the car anymore. Dealership has changed their tone and now refuses to allow me to trade it in due to the issue and I've taken it to a few other lots and the moment they hear the noise while checking it out, all deals go south. Best offer I've gotten was 15k. Since this has happened and the weather has gotten colder I now have an issue with the manual transmission. I get horrible grinding when I shift in to second when it's cold out even with the clutch pushed all the way down. Of course no response from dealer to have that looked at either.

I have all but given up on Dodge helping me in any way at this point and have fully given up on the dealership on helping me. Dealership has already told me they are done "donating our time to your issue" even though it's under warranty. Worst part is that it's the only dodge dealer in town and there are a few in surrounding towns, but they are all owned by the same main company.

At this time the car is just parked because the noise is so bad that I'm worried it might actually cause real damage to something which is another level of problems I don't want. Also with the shiffting issue I do not want to damage anything else. I continue to make my monthly payments so it doesn't kill my credit while hitching rides to work and to get my kids from daycare from friends until I can save up enough to buy a beater to drive while I wait for whatever is happening here. I can't afford to have 2 payments by getting a loan on a 2nd vehicle otherwise I'd just do that.

I'm really disappointing in how everything has been handled, but at this point I guess it's back to the drawing board while I wait to hear back from FCA or get enough saved up to just get aftermarket parts for repair. Guess it doesn't really matter if it hurts my warranty if I do that since the dealership refuses to even honor the warranty in the first place.
 
#29 ·
When I had a different problem with my Jeep GC last summer (failed water pump at 38k on 5.7L), I contacted FCA Customer Care and they opened a case number on it.
When I got the feeling that that things weren't progressing well (it was a warranty issue) I started emailing the 2 highest level execs I could find at Chrysler. Funny how they found a water pump for my Jeep that was supposedly 4,000 units on back order with no promise date. It suddenly showed up at my dealer. It surprised the heck out of them but they were of course unwilling to admit that my intervention had anything to do with my water pump being expedited. These are the execs that I emailed:
Doug Betts doug.betts@chrysler.com
Shawn Morgan shawn.morgan@chrysler.com
You got nothing to loose, its worth a try. Make sure that you provide all of the details and your case number.
BTW: Did you try contacting Jeff McCabe as suggested in one of my previous posts?
I'd be interested in hearing if any of this helps.
 
#27 ·
the 2nd gear "clash" is common on Tremec's especially when they're cold.

If it clears up after driving and warming up, that's the answer for that.

As far as the diff, keep driving it - with the low miles (on your replacement) it will be noisy, but it won't fail outright.

What I'd recommend is going directly through customer service and taking this up to zone manager / region manager since the dealer has blocked you out...

Its clear you have a defective diff (multiple units at this point) and they have to make good on it - you have a warranty, now FCA has to make good on it. No reason to pay out of your own pocket.

[your experience (and others I knew of) - are the reasons I sold my '09 (had differential noise) and ordered my '16...too many accounts of multiple replacements. As it was I lost 3 1/2 weeks of time and multiple trips to deal with the '09 diff]

My read on this is GKN (company that now shows up on labels of these diffs) has casual QC when it comes to tolerances - and these things get noisy as a result. If one's built right, it can be quiet...
 
#28 ·
Yeah, that is exactly what it is doing with 2nd gear.. I saw to remove clutch delay valve I just haven't had a moment to get that done to see if it helps.

I will give that a shot with the zone manager/regional manager idea and see if that maybe circumvents the dealer. Thanks for that tip.
 
#35 ·
this has the same differential as your previous Challenger - watch out if diff is noisy
 
#40 ·
Sounds unlikely that 4 differentials would have the same problem.
Sounds like an harmonic sound to me. (mechanical resonance)
Could very well have been the drive shaft.

 
#41 ·
I have this whining noise in my 2015 scat pack. Same conditions as the rest of you. 65ish, lightly press the gas and the noise begins. Let off the gas and the noise immediately stops.

The sound reminds me of the old school Chevelles. They made this sort of noise which is why I wrote it off as normal. Looks like its not though.
 
#44 ·
Ok, so check this out, not one...but two driveshafts were shipped to my dealer, both showed up damaged!!!





And now this part is on a national back order, so I'm stuck waiting LOL I promise to report back when it's done to let everyone know if this really quiets things down.
 
#46 ·
I'd monitor that - if it changes, or turns up at other speeds = not a good sign, something's not wearing right if that's the case.
 
#47 ·
I started hearing a groan and whirring turning at low speeds in the parking lot recently. Took my 2015 SP with 8500 miles in this morning. They serviced it with 680833381AA per service bulletin 03-008-16 which is totally different than what the owners manual tells you to use. I bet they put the wrong lube in at the factory. It also has a 100-150 mile wear in before the lube fully penetrates the clutches.
 
#48 ·
Update: got the new driveshaft in today.

I don't have a lot of seat time, but I do think it less howl-ly while cruising, especially in the 40-50 mph range when the car drops into 7/8 gears and you coast and go on and of the gas. Car isn't completely quiet, I can hear the rear end a little bit, but only with the radio off. Overall for what this car is, it's pretty damn quiet when you want it to be. I want to say this is a noticeable improvement. Will re-evaluate as seat time continues...

Will see what the wife says the next time we're out cruising, she commented on the howling on a previous ride.

Car is running great, drove around a 5.0 today while pulling onto the highway. Spanked him pretty good! :)
 
#52 ·
Figured that I should post an update for anyone out there holding out hope that this may quiet the howl down...I think my car sounds the same as it did before the drive shaft swap and I think most of the noise/howl comes from the differential which is probably considered normal. Just fwiw..
 
#49 ·
250 miles on my 2017 SRT and I have the loud howling noise at almost all speeds. Had it at the dealership today and they are ordering new diff fluid. The mechanic has a Challenger and noticed right away that this was not right. He said they may also have put wrong fluid in at factory. If it does not help, he said they will replace the diff. They are also ordering a new ventilation fan for my drivers seat that is making a high pitched, whining sound. Also had a software update done since my unconnect over the last couple days kept locking up. Not a good start to my first Challenger.
 
#50 ·
250 miles on my 2017 SRT and I have the loud howling noise at almost all speeds. Had it at the dealership today and they are ordering new diff fluid.
You'll be getting a new rear diff, new oil won't help. Hope the next one is better.



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#55 ·
i may have already commented on this thread but i have new info on my issue(likely old info because nothing changed) No matter what the dealer says gear noise like that is NOT normal. that is the exact same noise mine has. that absolutely sounds like gears. i have built many differentials and ALL noise can be adjusted out. i brought mine in with explicit instructions. that i DO NOT want whole diff replaced unless internal parts are found in need of replacement. and that NO oNE is to drive the car if they do install new diff. i am going to do all proper break in and if it make noise there will be no doubt that it was carefully broken in. there is no way to know exactly how but bench testing is done by mfg. but i treated it like virgin gears i went 35 mph for 6-8 miles and allowed it to cool completely. i repeated it again never giving more than 25% throttle. after the third cycle i started testing slightly higher speeds up to the 68 mph starting point of the old noise. the new diff has exact same sound at exact same speed. Now from all of my experience it is a virtual impossibility that both are exact. i also told the dealer to investigate harmonics. i am pretty sure that this is NOT gear noise now no matter how much it sounds that way. to top off this now the new one does make noise when turning in parking lots. there is a TSB to add a different friction modifier. but the point is that the dealer will not be able to find the noise or its root. i am going to find it myself then do my best to inform them and get it warrantied. my real issue is that i want to start some mods so i am having them document it before hand and going to start a case just to make sure i dont have to hear that the shifter caused it or one piece drive shaft or something like that. there is obviously a problem the noise is hard to talk over and will have to be fixed. if its harmonics the fix may be something as easy as clamping rubber isos in an axle or such. if any of you get a direct answer as to the solution please share