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Discussion Starter #1
While on a two week vacation, I started noticing the infamous subtle sound of a skill saw coming from the drive motor. It was not loud but was noticeable when decelerating under high regen “L”. I heard it mostly in 10 mph to full stops in parking lot driving with the window down. It was not noticeable when accelerating. Is there such a thing as a normal sound level under these conditions or should I be looking at bearing replacement soon under the Voltec warranty? Its a 2013 with a 08/2012 build date. We just turned 80k on it.

I’ve seen a video that someone posted earlier this year where the noise level was very high, this is not the case with mine. It’s subtle but noticeable.


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Absolutely should be under warranty on the Voltec Drivetrain

If it were me, I'd take it in and get the process started.

It's going to be out of your hands for quite a while so have a backup plan.
 

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Discussion Starter #3 (Edited)
Thanks Dutch

Do you happen to have link to the TSB info on this? The local dealer near me in Madison, Wi where we got it has sold many Volts over the years, so I would expect them to be familiar with the issue but you never know. I want to be sure I go in fully loaded with info just in case they give me grief on this.

My bigger concern is whether the subtle sound I’m hearing is enough to trigger the need for warranty replacement.

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I'm the original owner of a 2012 with 42,000 miles and just went through the same situation. The Dealer contacted GM and determined the drive motor bearing WAS NOT covered under the Voltec warranty. I called GM customer service directly and they were of no help. I've read other Volt owner's experiences and it seems hit or miss whether it will be covered. The dealer did work with me and mine ended up costing $880.00 total. Also, if there is a tsb I could not find it. I hope you have better luck.
 

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I'm the original owner of a 2012 with 42,000 miles and just went through the same situation. The Dealer contacted GM and determined the drive motor bearing WAS NOT covered under the Voltec warranty.




8466800 was the labor code for this specific warranty work unless that code has been changed just recently...
 

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You say the sound is subtle. Those with the cage bearing issue have reported it to be loud. People and animals stop and stare kind of loud. If it really is a disintegrating bearing cage, it will start to make a racket. At least that's my impression after reading the posts.
 

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Discussion Starter #7
You say the sound is subtle. Those with the cage bearing issue have reported it to be loud. People and animals stop and stare kind of loud. If it really is a disintegrating bearing cage, it will start to make a racket. At least that's my impression after reading the posts.
I only seem to here it during deceleration driving in L at parking lot speeds. I just watch a video of guy driving a Red volt he was holding his phone out the window while decelerating and accelerating. His was loader during deceleration than acceleration but was present both ways.

I’ll have to see if I can do a similar video for comparison.

Regardless of sound level it is the sound of a circular saw whine.


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Discussion Starter #8



8466800 was the labor code for this specific warranty work unless that code has been changed just recently...
I’m surprised how many other items got replaced on that invoice compared to what the bulletin says to replace ( bearing, seal and if needed case gasket)


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The installed components on my invoice do not match exactly with those posted by Somms but they do all show as being under warranty. The difference is that mine shows $880.00 as a warranty deductible charge, which I did pay, and mine does not show any labor code for the work being performed.
 

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Discussion Starter #10
Warranty Deductible? So where does it say you are subject to a warranty deductible? Or is this some kind of Proration adjustment like car batteries have?


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I just setup appointment to have mine looked at tomorrow at the dealership. Driving to work this morning and out of the blue I started to hear the slightest whine but once I hit the brakes I got the table saw whiring down sound. Mine is definitely loud when on the brakes or when I put into L. Mine is a 2012 with about 70k miles so here is to hoping they cover under the VOLTEC warranty
 

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Warranty Deductible? So where does it say you are subject to a warranty deductible? Or is this some kind of Proration adjustment like car batteries have?
I don't know for sure. When I called GM customer service they said this was covered under the 3 year 36,000 mile warranty, which I exceeded on both counts. When I talked to the dealer they said it was covered under the 5 year drivetrain warranty, which I had already exceeded. Both GM and the dealer said it was not covered under the Voltec warranty.
The dealers initial quote was approximately $1650 for the repair. I asked them to contact GM directly to verify if the repair was covered under the Voltec warranty and when the dealer got back to me they said it was not covered. So I told the dealer this was not an isolated issue and asked them to contact GM again to see if they would cover some of the cost and I was told GM would and the cost for repair would drop from $1650 to approximately $1150. Upon completion, the repair ended up costing $880 and was billed as shown on the invoice. I've got two dealers to choose from and neither works at a fast or acceptable pace. My Volt sat at the dealer for a week before they even looked at it then it took a couple more days for them to diagnose the problem. Then parts had to be ordered and they did not all come in at the same time. I could have taken it to the other dealer but last time I took my car to that dealer it sat for 3 1/2 weeks for a software update. So I'm frustrated with the inconsistency when determining what's covered under warranty and frustrated with getting repairs on a timely basis.
I've also had the "battery too cold, plug in to warm" message but the CEL light has not come on with the message so the dealer says they cannot diagnose and repair until it does, so I've got that to look forward to also.
 

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I've also had the "battery too cold, plug in to warm" message but the CEL light has not come on with the message so the dealer says they cannot diagnose and repair until it does, so I've got that to look forward to also.
Unless it was bone-chilling cold, more than likely you will also need a section of your battery pack replaced in order to clear that specific fault. Knowing your GM service dept they will claim this wouldn't be covered under warranty either I suppose...
 

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So follow up on mine. Took to dealership two days ago and on the way there it threw the service high voltage code(s). My car is a 2012 with 64kish miles on it so outside the 5 year powertrain but within the 8 year VOLTEC. The lady at the service desk knew of the issue and after verifying I was under 100k she said it was covered by the VOLTEC. I got a call the next day saying car was done which was a surprise. I called back to verify and turns out they had just cleared the codes and never test drove. She took the tech out on the drive and verified it was in fact still making the noise so parts ordered and hopefully fixed in 2 or 3 more days. While in there I am also getting the coolant system flushed which i had been planning on doing for months so this made that more convenient.
 

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Please keep us posted on the repair. There seems to be a lot of inconsistencies whether the drive motor bearing is covered under the Voltec warranty or not.
 

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Discussion Starter #16
Per the Chevrolet limited warranty and Owner Assistance Information booklet.







The out clause for GM to deny coverage.






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Please keep us posted on the repair. There seems to be a lot of inconsistencies whether the drive motor bearing is covered under the Voltec warranty or not.

So got my car back today from the repair so here are some details on mine. As I think it should be (also refer to post above) but mine was 100% covered by the VOLTEC warranty and I didn't have to say a thing. The service adviser knew about the issue and checked that I was under 100k miles (car is already 6 years old) and confirmed I was all good. 24234780 is the Seal Part No. and 24259842 is the Bearing Part No. both shown as covered by warranty with no price or labor mentioned per PIP5081K. Took a few days to get the parts but only a day for them to make the actual repair so nothing abnormal there
 

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So got my car back today from the repair so here are some details on mine. As I think it should be (also refer to post above) but mine was 100% covered by the VOLTEC warranty and I didn't have to say a thing. The service adviser knew about the issue and checked that I was under 100k miles (car is already 6 years old) and confirmed I was all good. 24234780 is the Seal Part No. and 24259842 is the Bearing Part No. both shown as covered by warranty with no price or labor mentioned per PIP5081K. Took a few days to get the parts but only a day for them to make the actual repair so nothing abnormal there
Thank you to both you and Dennis (for posting the warranty), I am on the phone with GM Customer service right now and will keep you posted.
 

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So got my car back today from the repair so here are some details on mine. As I think it should be (also refer to post above) but mine was 100% covered by the VOLTEC warranty and I didn't have to say a thing. The service adviser knew about the issue and checked that I was under 100k miles (car is already 6 years old) and confirmed I was all good. 24234780 is the Seal Part No. and 24259842 is the Bearing Part No. both shown as covered by warranty with no price or labor mentioned per PIP5081K. Took a few days to get the parts but only a day for them to make the actual repair so nothing abnormal there
Thanks for posting the details, jdwilks! Very helpful.
 

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