Rear diff - Page 4 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

winterboy8 · 09-21-2015, 08:38 AM

Quote:

Originally Posted by himmy33

So my issue is the car vibrates when I get off the power in between 70 and 45 MPH. It gets worse the faster I am going when I let off. I am pretty sure this is a backlash issue but for some reason I can't find the TSB for it now. Any help would be appreciated. Thanks!

Scroll up to reply #28 posted by ZO6 Bryan.

Here's the link to the Chevy website:

http://www.chevroletproblems.com/tsbs/

ZO6 Bryan · 09-21-2015, 09:03 AM

Quote:

Originally Posted by himmy33

So my issue is the car vibrates when I get off the power in between 70 and 45 MPH. It gets worse the faster I am going when I let off. I am pretty sure this is a backlash issue but for some reason I can't find the TSB for it now. Any help would be appreciated. Thanks!

That kind of sounds like the pinion nut may be loose.

himmy33 · 09-22-2015, 12:13 AM

Quote:

Originally Posted by ZO6 Bryan

That kind of sounds like the pinion nut may be loose.

Considering my lack of knowledge on this differential I would believe what you are saying. Can this be caused from the TSB's listed or is this just a separate incident altogether? After reading as much as I could from this forum regarding issues with the rear diff I didn't see anything about vibration on decal (maybe I missed it?). Just seems like people hear a howl or whine.

ZMEnow · 09-22-2015, 09:22 AM

Quote:

Originally Posted by himmy33

Considering my lack of knowledge on this differential I would believe what you are saying. Can this be caused from the TSB's listed or is this just a separate incident altogether? After reading as much as I could from this forum regarding issues with the rear diff I didn't see anything about vibration on decal (maybe I missed it?). Just seems like people hear a howl or whine.

That doesnt sound like the typical whine as Bryan noted, maybe something loose, or a crush bearing.

MYBADSS · 09-22-2015, 11:55 AM

Just got back from the dealer. New rear end parts on order. Loud howl from differential between 40 and 50 mph. Only 2851 miles on her. :-(

himmy33 · 09-23-2015, 02:47 AM

Quote:

Originally Posted by MYBADSS

Just got back from the dealer. New rear end parts on order. Loud howl from differential between 40 and 50 mph. Only 2851 miles on her. :-(

Sorry to hear that. Hope everything goes well for you and the fix goes even better. Did they put you in a loaner?

Cabinetman · 09-23-2015, 04:00 PM

Quote:

Originally Posted by MYBADSS

Just got back from the dealer. New rear end parts on order. Loud howl from differential between 40 and 50 mph. Only 2851 miles on her. :-(

You should feel lucky they are working on the car. According to the service manager at my local dealer, GM refused to fix my whine that is happening in the exact same speed range while coasting. I hope they are able to get the car fixed quickly.

himmy33 · 09-23-2015, 06:48 PM

Just got back from the dealer myself. The news on the vibration was alarming. They said they looked at the car and noticed two lug nuts missing and the other three were loose. One of the tech guys had just happen to see them laying in the parking lot and set them on the service counter. They matched exactly. Thank god the wheel did not come off and no one was hurt. I feel pretty bad/stupid for not checking something as simple as that. They put them back on and tightened everything up and the vibration is gone.

On to the whine/groan. They said they replaced the fluid once and it went away but it is not covered under the TSB they referenced and it would be $125. I explained nicely over the phone that this was incorrect and sent them the correct TSB and also explained the drain and refill 3 times procedure. Tech was very polite and said he would forward the info onto the mechanic and hopefully have it resolved by tonight.

himmy33 · 09-23-2015, 07:45 PM

Update. They apologized for missing the TSB but are claiming that TSB's are only covered by the 3 year 36,000 mile warranty. Anybody know if this is true?

Sven59 · 09-23-2015, 07:46 PM

Sounds like crap, part of the power train

himmy33 · 09-23-2015, 07:57 PM

Thats what I thought. On the phone with corporate as I type...

Sven59 · 09-23-2015, 07:59 PM

Good, have them prove it with documentation.

himmy33 · 09-23-2015, 08:23 PM

Finished with corporate. They put together a case for me and will be contacting the dealership. I should here back from the dealership within 24 to 48 hours. I hope it can be handled by the end of tomorrow. I have plans for the car this weekend...

ZL1-V · 09-23-2015, 08:40 PM

Quote:

Originally Posted by himmy33

Finished with corporate. They put together a case for me and will be contacting the dealership. I should here back from the dealership within 24 to 48 hours. I hope it can be handled by the end of tomorrow. I have plans for the car this weekend...

Oh it will be. The dealers don't enjoy the call back. I had one handled quickly in the past.

09-23-2015, 07:46 PM	#52
Sven59 HAMMER PILOT Drives: 13 ZL1#182, 85 CJ7, 16 Silverado Join Date: Nov 2011 Location: Tucson AZ Posts: 4,387	Sounds like crap, part of the power train __________________ "DO YOU WANT ME TO PUT THE HAMMER DOWN?"

09-23-2015, 07:59 PM	#54
Sven59 HAMMER PILOT Drives: 13 ZL1#182, 85 CJ7, 16 Silverado Join Date: Nov 2011 Location: Tucson AZ Posts: 4,387	Good, have them prove it with documentation. __________________ "DO YOU WANT ME TO PUT THE HAMMER DOWN?"

09-22-2015, 11:55 AM	#47
MYBADSS Drives: 2015 ZL1 Convertible Automatic Join Date: Sep 2011 Location: Maricopa, AZ Posts: 100 View My Garage	Just got back from the dealer. New rear end parts on order. Loud howl from differential between 40 and 50 mph. Only 2851 miles on her. :-(

09-23-2015, 06:48 PM	#50
himmy33 Go Cougs! Drives: 2012 Ashen Gray ZL1 Join Date: Aug 2014 Location: Washington Posts: 230 View My Garage	Just got back from the dealer myself. The news on the vibration was alarming. They said they looked at the car and noticed two lug nuts missing and the other three were loose. One of the tech guys had just happen to see them laying in the parking lot and set them on the service counter. They matched exactly. Thank god the wheel did not come off and no one was hurt. I feel pretty bad/stupid for not checking something as simple as that. They put them back on and tightened everything up and the vibration is gone. On to the whine/groan. They said they replaced the fluid once and it went away but it is not covered under the TSB they referenced and it would be $125. I explained nicely over the phone that this was incorrect and sent them the correct TSB and also explained the drain and refill 3 times procedure. Tech was very polite and said he would forward the info onto the mechanic and hopefully have it resolved by tonight.

09-23-2015, 07:45 PM	#51
himmy33 Go Cougs! Drives: 2012 Ashen Gray ZL1 Join Date: Aug 2014 Location: Washington Posts: 230 View My Garage	Update. They apologized for missing the TSB but are claiming that TSB's are only covered by the 3 year 36,000 mile warranty. Anybody know if this is true?

09-23-2015, 07:57 PM	#53
himmy33 Go Cougs! Drives: 2012 Ashen Gray ZL1 Join Date: Aug 2014 Location: Washington Posts: 230 View My Garage	Thats what I thought. On the phone with corporate as I type...

09-23-2015, 08:23 PM	#55
himmy33 Go Cougs! Drives: 2012 Ashen Gray ZL1 Join Date: Aug 2014 Location: Washington Posts: 230 View My Garage	Finished with corporate. They put together a case for me and will be contacting the dealership. I should here back from the dealership within 24 to 48 hours. I hope it can be handled by the end of tomorrow. I have plans for the car this weekend...