Noise coming from warranty-replaced supercharger

[Zl12k13]

Hi everyone,

First post here, but have been lurking around since I bought my Z back in 2018.

Brief history on the car, currently has 55k on it and had the supercharger replaced between 48-50k miles last year by Chevy's extended warranty, due to the isolator/marble noise. Car has a JRE tune and Roto-fab intake. I'm the second owner and have had it since 36k.

Fast forward to a year later and there is a noise coming from the supercharger again that is completely different. Currently the supercharger has oil leaking from the front and I'm being told by my shop that the bearings are shot and I'll need another supercharger. The noise becomes noticeable at 1500 RPMs and continues as the revs climb, getting faster in conjunction with the revs.

I believe this was an install error on the part of the dealer and I hope they make it right/cover it under warranty of the new supercharger. The dealer that did the warranty work is about 100 miles away, so I want to be sure that if I decide to limp it there that it won't cause further issues.

With that being said, I was also curious if all I would need is a new/rebuilt head unit OR will I need the complete kit? Prior to this happening, I was already in the market for a new vehicle, so I'd be looking to go the cheapest route to get it to "sell-able" condition.

Video below for reference:

https://youtu.be/aDghvYRWSPE

Thanks!

[Bigtime53]

Take it back to the dealer. If I am correct I think GM covers those up to 100k miles. I would also suggest you call them [the dealer who repaired it before] and tell them you do not want to drive it in and have them send a wrecker to get it on their dime. If it is making a bunch of noise and it comes apart on the way to the dealer then you may have to eat part of the repair cost,like a new motor. This is what I would do anyway.Good luck

[silversleeper]

They might or might not void the warranty due to the tune, but almost for sure because of a cold air intake. Even if "Joe" says it's no problem once the claim is made if it even gets that far a regional GM claims person will deny it if they review it and see the CAI. From that point of discovery and computer documentation by the GM shop, something like a 100k mi warranty is forever gone on that car.
Put a stock intake on it prior to them seeing it and don't tell them on the phone.


There are some that will rebuild them at reasonable prices. Was it JOKERZ as one example?

[Zl12k13]

Originally Posted by silversleeper

They might or might not void the warranty due to the tune, but almost for sure because of a cold air intake. Even if "Joe" says it's no problem once the claim is made if it even gets that far a regional GM claims person will deny it if they review it and see the CAI. From that point of discovery and computer documentation by the GM shop, something like a 100k mi warranty is forever gone on that car.
Put a stock intake on it prior to them seeing it and don't tell them on the phone.


There are some that will rebuild them at reasonable prices. Was it JOKERZ as one example?

Completely understand and agree. The car will be going back to stock prior to going in.

I was looking at JOKERZ and worst-case scenario if the dealer won't touch it, that looks like the most reasonable option. I'd assume I would just need the supercharger head unit and not an entire kit, but not 100%. I've heard the work to replace the supercharger is pretty easy on these cars, labor-wise.

Thanks!

[Zl12k13]

Originally Posted by Bigtime53

Take it back to the dealer. If I am correct I think GM covers those up to 100k miles. I would also suggest you call them [the dealer who repaired it before] and tell them you do not want to drive it in and have them send a wrecker to get it on their dime. If it is making a bunch of noise and it comes apart on the way to the dealer then you may have to eat part of the repair cost,like a new motor. This is what I would do anyway.Good luck

Appreciate the input, this is probably the route i'll take first.

[silversleeper]

https://www.lingenfelter.com/product/SO-001-19004.html


Parts are $200 for quality parts.


Here is a video showing how just the "snout" needs to be rebuilt if I'm not mistaken.
https://youtu.be/16ik0AuHfQY
Excuse me for not watching the entire video or looking closely if his hammering out parts is the right way to do this (in a quick look at one section it's the OLD bearing that will be thrown away that's being hammered, thats no problem). The point is that I think it's relatively easy to remove the snout and send it in for a rebuild to someone you trust. Others might be able to chime in on some options and further advice. As you said IF they won't touch it warranty. Myself I'd rather take off the snout and have it done instead of dealer joyriding my ZL1 and messing up other things during their hacks. If you are lucky enough to have a service department that isn't like that congrats.


Edit: BTW while doing all this supercharger oil change wouldn't be a bad idea. There are things in camaro5 I think and online on how-to. At 55k miles it's not required I believe, I'm too lazy to look it up but I was thinking it was good to 100k?

[Zl12k13]

Originally Posted by silversleeper

https://www.lingenfelter.com/product/SO-001-19004.html


Parts are $200 for quality parts.


Here is a video showing how just the "snout" needs to be rebuilt if I'm not mistaken.
https://youtu.be/16ik0AuHfQY
Excuse me for not watching the entire video or looking closely if his hammering out parts is the right way to do this (in a quick look at one section it's the OLD bearing that will be thrown away that's being hammered, thats no problem). The point is that I think it's relatively easy to remove the snout and send it in for a rebuild to someone you trust. Others might be able to chime in on some options and further advice. As you said IF they won't touch it warranty. Myself I'd rather take off the snout and have it done instead of dealer joyriding my ZL1 and messing up other things during their hacks. If you are lucky enough to have a service department that isn't like that congrats.


Edit: BTW while doing all this supercharger oil change wouldn't be a bad idea. There are things in camaro5 I think and online on how-to. At 55k miles it's not required I believe, I'm too lazy to look it up but I was thinking it was good to 100k?

REALLY appreciate you digging those links up to help!

Just like you said IF the dealer won't warranty it, they won't be keeping the car. It will come home for me and a few buddies to do OR go to a shop.

Thanks again!

[ZMEnow]

Originally Posted by Zl12k13

Hi everyone,

First post here, but have been lurking around since I bought my Z back in 2018.

Brief history on the car, currently has 55k on it and had the supercharger replaced between 48-50k miles last year by Chevy's extended warranty, due to the isolator/marble noise. Car has a JRE tune and Roto-fab intake. I'm the second owner and have had it since 36k.

Fast forward to a year later and there is a noise coming from the supercharger again that is completely different. Currently the supercharger has oil leaking from the front and I'm being told by my shop that the bearings are shot and I'll need another supercharger. The noise becomes noticeable at 1500 RPMs and continues as the revs climb, getting faster in conjunction with the revs.

I believe this was an install error on the part of the dealer and I hope they make it right/cover it under warranty of the new supercharger. The dealer that did the warranty work is about 100 miles away, so I want to be sure that if I decide to limp it there that it won't cause further issues.

With that being said, I was also curious if all I would need is a new/rebuilt head unit OR will I need the complete kit? Prior to this happening, I was already in the market for a new vehicle, so I'd be looking to go the cheapest route to get it to "sell-able" condition.

Video below for reference:

https://youtu.be/aDghvYRWSPE

Thanks!

If you are nervous about driving take the SC belt off an just stay out of any WOT. You will probably see a decrease in MPG. I had to once when I snapped the tensioner bracket.

[Bigtime53]

It was mentioned above that the dealer would void your warranty with a cold air intake? That is the first time I have read that. Maybe his dealer told him that but it is not so. The 14-15 model Z/28's came with cold air filters and GM does not void the warranty on those. Maybe it is a dealer thing where some will stand behind the customer and some are just dick's and won't but my experience with the previous ZL's [I had 2-2013 models] and both had cold air intakes on them and I bought both cars over 300 miles away and took them to a dealer 30 miles from me and they repaired the supercharger and never questioned the cold air intakes on either car. If your in doubt the dealer won't fix it with the cold air intake on put the stock one back on if you have it but if it was me I would leave the cold air filter on and send the car to them. Good luck

[MichiganMatt]

I think the cold air intake upgrade is fine, as long as you do not do a tune. Some of us use Rotofab, CAI, or even K&N w/o the tune. Once a tune is done and the Z no longer reflects the original OEM programming, you have significantly less leverage to lean back on the extended SC warranty.

[Zl12k13]

Originally Posted by MichiganMatt

I think the cold air intake upgrade is fine, as long as you do not do a tune. Some of us use Rotofab, CAI, or even K&N w/o the tune. Once a tune is done and the Z no longer reflects the original OEM programming, you have significantly less leverage to lean back on the extended SC warranty.

Yeah, I'm a little worried about the tune; however, worst case scenario, it looks like it would be ~1500-1800 for the head unit and my friends (mechanics) and I can do the work at home.

[Risingson05]

Do you have the capability to take the tune off and put it back to stock before taking it in?

[Zl12k13]

Originally Posted by Risingson05

Do you have the capability to take the tune off and put it back to stock before taking it in?

Yeah I do, won't be a problem at all.

It's loaded on the SCT.

[gtstorey]

They can still tell if it has had at tune loaded if they check. There is a counter for tune writes in the ECU.