GV60: whining noises coming from rear motor / drivetrain

[ChrisC47]

I've got a 2024 GV60 that I took delivery on at the beginning of 2024. Recently, just over a year into ownership, I started hearing a couple very subtle sounds coming from the drivetrain, which I quickly isolated to the REAR drivetrain. It sounds like a weak whine when I'm gently decelerating, and sounds like a flutter when I'm gently accelerating. It started off pretty quiet, but now has gotten loud enough that my wife asked me about it today!

Via a targeted Google search this evening, I pretty much instantly found this thread over in the GV70 section of this forum site:

B

Thread 'Drive train noise'

Apr 26, 2023

I have a 2023 GV70 Advanced model with about 3600 miles. Generally, I am very happy with it - but I have one problem. About 1K miles I started noticing a noise/whine from the drive train - I believe from the transmission. It isn’t loud but very annoying, occurring most often when coasting or under mild acceleration in all drive modes. I like the quiet cabin of the GV70, but the drive train noise isn’t what I would expect from a “luxury’ product or any new vehicle. Curious if I am the only one experiencing this or if it more systemic with the GV70 - or if anyone has tried to resolve this...

• BGJ
• Replies: 37
• Forum: GV70 Engine, Drivetrain and Exhaust Discussion

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I thought it was worth mentioning here in case someone's just scanning the GV60 threads looking for this problem. The thread I linked to above describes my problem pretty much exactly. Over in that thread, reports are that upon inspection, the service tech would typically find metal filings in the differential fluid, which obviously is a smoking gun. The fixes have involved simply replacing the diff (or transfer case?). Apparently it take 4-5 weeks for the replacement part / assembly to show up, and fortunately the car can continue to be driven during that period. I've also heard of a TSB and a "repair kit" but I haven't dug into that yet -- might be for a different problem.

I called into my dealer last week and made a service appointment, but it's for TWO MONTHS in the future. This week I'll call back and see if they can move me up since I think this is getting worse. If they can't I'll see if I can escalate via Genesis USA.

Anybody else had or heard of this problem?

 

[noremacnova]

Sorry about your problem with the GV60, but I don't think that the cited issue with someone else's GV70 ICE is anything related to yours. The GV70 ICE uses a traditional drivetrain with rear differential, whereas the GV60 has no such thing.

 

[ChrisC47]

Unlike the GV60 which is EV-only (yay), the GV70 is available as a pure EV model; they market it as the "Electrified GV70".

I had assumed that the GV70 was on the same E-GMP platform as all the other HMG EVs (Ioniq5/6, Kia EV6/9, GV60, etc.) but some digging just now tells me that the GV70 is actually has a modified version of the E-GMP drivetrain. Which is reasonable since the GV70 wasn't designed from the ground up as an EV-only platform, rather employs the more typical legacy OEM solution of taking an ICE chassis and shoehorning EV bits into it -- the kind of EV I never buy .

So you may be right that the bearing problem reported in the GV70's differentials or transfer case may not apply to the GV60! I'll keep that in mind when talking to Genesis. The components might be shared, though, and certainly the symptoms sound the same. Actually, the GV70 reports talk about the problem appearing immediately, within 2000 miles or so of ownership, whereas mine didn't show up until about 10,000 miles (or at least that's when I noticed the sound).

Nobody else has heard of this (literally, LOL) in a GV60?

 

[steveinarizona]

Unlike the GV60 which is EV-only (yay), the GV70 is available as a pure EV model; they market it as the "Electrified GV70".

I had assumed that the GV70 was on the same E-GMP platform as all the other HMG EVs (Ioniq5/6, Kia EV6/9, GV60, etc.) but some digging just now tells me that the GV70 is actually has a modified version of the E-GMP drivetrain. Which is reasonable since the GV70 wasn't designed from the ground up as an EV-only platform, rather employs the more typical legacy OEM solution of taking an ICE chassis and shoehorning EV bits into it -- the kind of EV I never buy .

So you may be right that the bearing problem reported in the GV70's differentials or transfer case may not apply to the GV60! I'll keep that in mind when talking to Genesis. The components might be shared, though, and certainly the symptoms sound the same. Actually, the GV70 reports talk about the problem appearing immediately, within 2000 miles or so of ownership, whereas mine didn't show up until about 10,000 miles (or at least that's when I noticed the sound).

Nobody else has heard of this (literally, LOL) in a GV60?

Actually, it uses the same platform as the ICE version (like the BMW electrified vehicles, the platform was designed to handle both types of power):

"The GV70 takes this second path: it uses the same platform as the gasoline-powered GV70, an architecture that was designed from the start to accommodate motors and batteries, as well as its four- and six-cylinder engines. The expectation is the next-generation SUV will move to E-GMP. We can attest to the excellence of the platform, the Genesis GV70 was the 2022MotorTrendSUV of the Year."

https://www.motortrend.com/news/2023-genesis-elecrtrified-gv70-alabama-hyundai-plant-production/

It does use the same power train as the GV60 (the powertrain from the Performance model).

I don't automatically eliminate from consideration electrified cars but I do prefer ones that are designed from the ground up as EVs like the GV60 and I prefer the GV60 to the Electrified GV70.

 

[ideutsch]

Unlike the GV60 which is EV-only (yay), the GV70 is available as a pure EV model; they market it as the "Electrified GV70".

I had assumed that the GV70 was on the same E-GMP platform as all the other HMG EVs (Ioniq5/6, Kia EV6/9, GV60, etc.) but some digging just now tells me that the GV70 is actually has a modified version of the E-GMP drivetrain. Which is reasonable since the GV70 wasn't designed from the ground up as an EV-only platform, rather employs the more typical legacy OEM solution of taking an ICE chassis and shoehorning EV bits into it -- the kind of EV I never buy .

So you may be right that the bearing problem reported in the GV70's differentials or transfer case may not apply to the GV60! I'll keep that in mind when talking to Genesis. The components might be shared, though, and certainly the symptoms sound the same. Actually, the GV70 reports talk about the problem appearing immediately, within 2000 miles or so of ownership, whereas mine didn't show up until about 10,000 miles (or at least that's when I noticed the sound).

Nobody else has heard of this (literally, LOL) in a GV60?

Never heard of this in a GV60 and I don’t see any way in which the GV70 ICE power train would share components with a GV70 electrified power train.

 

[steveinarizona]

Never heard of this in a GV60 and I don’t see any way in which the GV70 ICE power train would share components with a GV70 electrified power train.

The motors are the same as in the GV60P but the platform is the one from the ICE version of the GV70.

 

[ideutsch]

The motors are the same as in the GV60P but the platform is the one from the ICE version of the GV70.

Correct, but the drivetrain components, such as an automatic transmission or rear differential, aren’t the same between a GV70 ICE and the GV60.

 

[ChrisC47]

The motors are the same as in the GV60P but the platform is the one from the ICE version of the GV70.

Correct, but the drivetrain components, such as an automatic transmission or rear differential, aren’t the same between a GV70 ICE and the GV60.

Thanks guys! That's an interesting data point, that the GV70 is using the same motors as the GV60 Performance. I've got a GV60 Advanced so that's more separation from the GV70 problem.

Well, I'll update here as the drama unfolds ...

 

[ideutsch]

Thanks guys! That's an interesting data point, that the GV70 is using the same motors as the GV60 Performance. I've got a GV60 Advanced so that's more separation from the GV70 problem.

Well, I'll update here as the drama unfolds ...

I think the major point here is that the drivetrain issues you’re reading about with the ICE GV70 aren’t relevant to the EV GV70 or the GV60.

 

[ChrisC47]

UPDATE: fixed by dealer!

See my first post above for a description of the sounds. It took me 2.5 months to get into service (too few EV techs I believe), and in the interim I just kept driving, hearing the sounds get slightly louder over time, and crossing my fingers, especially during roadtrips.

Once I got it in, the tech immediately confirmed the problem. A new rear motor assembly was ordered (part number 44000-18JD0, a $4000 assembly per Google), arrived in about five days (whew, not 6 weeks!), was installed and tested, and I got my car back last night. It sounds fine!

The actual repair report is below. Hopefully this will help someone else down the road, who finds this thread via searching. I don't know if this is a known problem that's happening with GV60s or just a freak occurrence. Either way, I hope this is a permanent fix, and there are no further problems, because I really want to keep this car after lease end. After 15 years of going from EV to EV to EV, I really want to get off this lease treadmill, both a) to start saving money again and b) to be able to pick the timing of my next EV purchase

[dealer repair report below]

C/S HEARING SOUNDS IN THE REAR VEHICLE
Forward or Reverse at low to normal speeds.

CAUSE:
[following appears to be a PARTS cost breakdown]
44500R0R MOTOR GEAR DRIVE UNIT ASSY (REAR)
92238 WEV
qty 1 of 44000-18JD0 MOTOR-GEAR DRIVE UNIT ASSY, RR
qty 3 of 00232-19107 SP4-M1, A/T TRANSMISSION FLUID
qty 1 of 00232-19098 PINK, ANTIFREEZE/COOLANT
44500RQ0 DIAGNOSTIC TOOL OPERATION
92238W
52903A00 WHEEL ALIGNMENT (ALL) ADJUSTMENT
92238W
33001A00 HIGH VOLTAGE BATTERY COOLANT
92238W
[following appears to be a LABOR cost breakdown]
20244
44500R0RMOTOR GEAR DRIVE UNIT ASSY (REAR) 4.3
44500RQ0DIAGNOSTIC TOOL OPERATION 0.3
52903A00WHEEL ALIGNMENT (ALL) ADJUSTMENT 1.1
33001A00HIGH VOLTAGE BATTERY COOLANT 1.4
[following appears to be TECH REPORT]
ROAD TEST VEHICLE. VEHICLE IS WHINING IN THE REAR WHILE ACCELERATING AND DECELERATING. USE STETHOSCOPE AND LISTEN THE REAR MOTOR ASSEMBLY. WHINING NOISE HEARD COMING FROM THE REAR MOTOR. PERFORM POWER DOWN PROCEDURE. DRAIN COOLANT. DRAIN REAR MOTOR FLUID. REMOVE REAR MOTOR ASSEMBLY. SWAP OVER COMPONENTS. INSTALL REAR MOTOR ASSEMBLY. TOP OF DIFF FLUID. PERFORM HIGH VOLTAGE BATTERY FILL PROCEDURE. PERFORM FRONT AND REAR MOTOR FILLING PROCEDURE. PERFORM REAR MOTOR INITIALIZATION PROCEDURE. PERFORM 4 WHEEL ALIGNMENT. ROAD TEST VEHICLE. NO WHINING NOISES HEARD COMING FROM THE REAR

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[G-800559]

Great!