12 zl1 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Zee66 · 02-28-2016, 09:00 PM

Just picked up 2012 black ZL1 with a 700 HP lingenfelter kit, Its automatic and only has 5000 miles on it. Question, the rearend clunks when taking off sometimes and moans and groans when backing out of driveway. is there a TSB on this condition? Should this be drained and flushed out?

nighttowl · 02-28-2016, 10:23 PM

Sounds like the diff fluid is not compatible with the clutches in the differential and you are getting chatter.
Change the fluid out with the correct stuff, or a compatible fluid and it should go away.

There is a TSB where you do some figure 8's to break in clutches i believe.

hawk02 · 02-28-2016, 11:07 PM

See Post #26. I think this is the TSB you're looking for.

http://www.camaro5.com/forums/showth...=417907&page=2

Zee66 · 02-29-2016, 06:00 AM

Quote:

Originally Posted by nighttowl

Sounds like the diff fluid is not compatible with the clutches in the differential and you are getting chatter.
Change the fluid out with the correct stuff, or a compatible fluid and it should go away.

There is a TSB where you do some figure 8's to break in clutches i believe.

Its the factory gear lube and only has 5000 miles on it.

nighttowl · 02-29-2016, 08:08 PM

Quote:

Originally Posted by Zee66

Its the factory gear lube and only has 5000 miles on it.

I had to replace mine around 7k miles for the same reason.

cbarile · 03-01-2016, 06:58 AM

Not sure where you are in FL but I just took my car to stingray chevy in plant city for the same issue and they replaced the entire pumpkin.

Zee66 · 03-01-2016, 07:47 AM

Quote:

Originally Posted by cbarile

Not sure where you are in FL but I just took my car to stingray chevy in plant city for the same issue and they replaced the entire pumpkin.

Im in Cape Coral, Roger Dean Chevy has been great with my corvettes and we will see what they do on this Thursday.

Whisper1 · 03-01-2016, 02:40 PM

Quote:

Originally Posted by Zee66

Just picked up 2012 black ZL1 with a 700 HP lingenfelter kit, Its automatic and only has 5000 miles on it. Question, the rearend clunks when taking off sometimes and moans and groans when backing out of driveway. is there a TSB on this condition? Should this be drained and flushed out?

Just corrected the moaning and groaning when cold and turning at low speed. I ordered the correct fluid for the dealer (they did not have but one quart in stock) and carried the TSB as reference. I asked them to just change the fluid at my expense since the noise was not too severe. I noticed on the bill that they had added friction modifier. Incorrect, since the LSA gear oil already has the modifier added. Also noted that 1 quart of gear oil was used - it takes just over two. The manager was very apologetic and drained everything a second time and refilled with 2 quarts of the correct fluid. Noise is gone. I had the problem at purchase (7500 miles) and had it corrected at 10K. The clunking noise is noted in one of the TSB's. Hope you have a good relationship with the dealer since the mods voided the warranty in the eyes of many dealerships - good luck and hope you get the issues resolved.

Chevrolet Customer Svc · 03-02-2016, 10:09 PM

Quote:

[url=http://goo.gl/eSUO9U Posted by Zee66[/url] Just picked up 2012 black ZL1 with a 700 HP lingenfelter kit, Its automatic and only has 5000 miles on it. Question, the rearend clunks when taking off sometimes and moans and groans when backing out of driveway. is there a TSB on this condition?

Hi Zee66,

I regret to hear of these concerns you're experiencing with your Camaro. I have taken some time to read over this thread, and I see that you are planning on visiting your dealership this week. If you would like, we would be happy to reach out to Roger Dean Chevrolet to provide an additional layer of assistance while your vehicle is in service. Please send us a private message along with your full contact information, current mileage, and VIN if this is of interest to you.

Sincerely,

Julie C
Chevrolet Customer Care

Zee66 · 03-04-2016, 07:40 PM

Made my appointment yesterday at Roger Dean Chevrolet on time, reluctant to leave the car but have in the past with other cars, said they will call me and let me know what they find when it gets in. Shuttle home was great and made a new friend driving me. Eight hours go by and no call, I call my service advisor and he tells me they have not got a chance to get it in and it will be first thing in the morning. Today I call him and he still has no word on the car, he calls me back and says the tech just came back and they are waiting on parts because the noise and clunk in the rear. Feeling relieved that they are repairing this as per TSB, I get a call 45 min later from my advisor and he tells me the TSB is not under warranty and will be charged $622.00 to change the gear lube . Are you kidding me I said the car only has 5000 miles on it and he tells me its only covered under the 3 year 36000 coverage. I told them thats not acceptable! they said sorry and pick up your car. I cant tell you how many Chevrolet products I have owned and never been through something like this.Roger Dean is telling me the claim was denied by Gm and it was not them! REALLY?

370zyzfr1 · 03-04-2016, 09:16 PM

Wow. What a joke. Makes you think twice about paying so much for a car like that if GM and their dealerships won't stand behind it.

Zee66 · 03-07-2016, 06:50 PM

Quote:

Originally Posted by Chevrolet Customer Svc

Hi Zee66,

I regret to hear of these concerns you're experiencing with your Camaro. I have taken some time to read over this thread, and I see that you are planning on visiting your dealership this week. If you would like, we would be happy to reach out to Roger Dean Chevrolet to provide an additional layer of assistance while your vehicle is in service. Please send us a private message along with your full contact information, current mileage, and VIN if this is of interest to you.

Sincerely,

Julie C
Chevrolet Customer Care

Julie I pmed you,Thank You Phil

zeeb · 03-07-2016, 07:50 PM

Sorry to hear about the trouble your having with the car/dealer. Am I missing something? why would it be $600 to change diff fluid?

Zee66 · 03-07-2016, 10:31 PM

They have to change it out three times according to the TSB and drive 20 miles in between the changes. The fluid is covered if the rear end fails but not for preventive service, this just doesnt make sense.They would rather replace the rear diff when it fails instead of changing the fluid.How smart is that?

02-28-2016, 09:00 PM	#1
Zee66 Drives: 2012 Zl1 lingenfelter 700 hp Join Date: Feb 2016 Location: Florida Posts: 87	12 zl1 Just picked up 2012 black ZL1 with a 700 HP lingenfelter kit, Its automatic and only has 5000 miles on it. Question, the rearend clunks when taking off sometimes and moans and groans when backing out of driveway. is there a TSB on this condition? Should this be drained and flushed out? Last edited by Zee66; 02-28-2016 at 10:12 PM.

02-28-2016, 11:07 PM	#3
hawk02 Coupe Newbie Drives: '23 CT5-V BW, '21 Corvette HTC Join Date: Jul 2011 Location: Columbus, Ohio Posts: 3,439 View My Garage	See Post #26. I think this is the TSB you're looking for. http://www.camaro5.com/forums/showth...=417907&page=2 __________________

02-28-2016, 10:23 PM	#2
nighttowl Sarcasm loading -------- Drives: 2018 ZL1 1LE Join Date: Dec 2011 Location: TX Posts: 1,905 View My Garage	Sounds like the diff fluid is not compatible with the clutches in the differential and you are getting chatter. Change the fluid out with the correct stuff, or a compatible fluid and it should go away. There is a TSB where you do some figure 8's to break in clutches i believe. __________________ "The salesman actually told me to stop getting it sideways during the test drive" 2018 MBM ZL1 1LE - 652 rwhp, 588 rwtq SAE 2014 CRT ZL1 574 rwhp, 537 rwtq - SOLD 2010 IBM SS Camaro VVT L99 w/ TR6060 swap, 489 rwhp, 444 rwtq - SOLD

03-01-2016, 06:58 AM	#6
cbarile Drives: zl1 Join Date: Jan 2015 Location: fl Posts: 40	Not sure where you are in FL but I just took my car to stingray chevy in plant city for the same issue and they replaced the entire pumpkin.

03-04-2016, 07:40 PM	#10
Zee66 Drives: 2012 Zl1 lingenfelter 700 hp Join Date: Feb 2016 Location: Florida Posts: 87	Made my appointment yesterday at Roger Dean Chevrolet on time, reluctant to leave the car but have in the past with other cars, said they will call me and let me know what they find when it gets in. Shuttle home was great and made a new friend driving me. Eight hours go by and no call, I call my service advisor and he tells me they have not got a chance to get it in and it will be first thing in the morning. Today I call him and he still has no word on the car, he calls me back and says the tech just came back and they are waiting on parts because the noise and clunk in the rear. Feeling relieved that they are repairing this as per TSB, I get a call 45 min later from my advisor and he tells me the TSB is not under warranty and will be charged $622.00 to change the gear lube . Are you kidding me I said the car only has 5000 miles on it and he tells me its only covered under the 3 year 36000 coverage. I told them thats not acceptable! they said sorry and pick up your car. I cant tell you how many Chevrolet products I have owned and never been through something like this.Roger Dean is telling me the claim was denied by Gm and it was not them! REALLY?

03-04-2016, 09:16 PM	#11
370zyzfr1 Drives: 2014 Camaro Zl1 Tripple Black! Join Date: Nov 2014 Location: Iowa Posts: 383	Wow. What a joke. Makes you think twice about paying so much for a car like that if GM and their dealerships won't stand behind it.

03-07-2016, 07:50 PM	#13
zeeb Drives: 2014 ZL1, AGM, M6 Join Date: Feb 2016 Location: albany ny Posts: 168 View My Garage	Sorry to hear about the trouble your having with the car/dealer. Am I missing something? why would it be $600 to change diff fluid?

03-07-2016, 10:31 PM	#14
Zee66 Drives: 2012 Zl1 lingenfelter 700 hp Join Date: Feb 2016 Location: Florida Posts: 87	They have to change it out three times according to the TSB and drive 20 miles in between the changes. The fluid is covered if the rear end fails but not for preventive service, this just doesnt make sense.They would rather replace the rear diff when it fails instead of changing the fluid.How smart is that?