Report all diff problems

[andy92782]

Originally Posted by andy92782

New diff just installed in my '05.. 9700 miles. This also fixed the high speed vibration problem. I'll follow up with another thread..

I take this back. After driving it a few miles, I can tell the vibration isn't totally eliminated.

[Avejoe]

Originally Posted by Avejoe

My 04's rear is starting to whine again. The week after it was replaced the first time, they came out with an updated rear. Crossing my fingers

UPDATE: They put in a new diff. The whine is gone again. Made me sign a 500 mile break in paper. They also put a new seal in the trans. A leak I wasn't aware of. I have a high speed vibration that I wanted them to check.(Tire balance I thought) they balanced the tires, still had the vib. They checked them for round and found that they were all way out of wack. Cad. says 18lbs. or less. They tested at 34lbs.,31lbs., 29lbs. and 23lbs. So much for the GSD3s

[Kadonny]

Report on my 06. Diff supposidly just overfilled and leaking out of overfill. Whine still there, but not loud enough for me to worry about it.

[vonhiner]

I am now ready for my THIRD diff replacement at 16K miles!! The whine is back, very prominant about 47mph. I guess they don't do complete diff replacements anymore. The dealer says he has to get all the replacement parts and assemble. The car went in Monday morning and I am picking it up Thursday morning and it hasn't even been opened up. My dealer (Lockhart-Indianapolis)wants to do the job right and put in a clutch pack but it is on back order and won't be able to get all the parts before the long Labor Day weekend. Says I might as well drive it until all the parts come in. Good idea, and they are taking care of me (rental car) but the THIRD diff in 16K mi????The warranty people are asking a lot of questions and giving the dealer problems and dragging feet and asking questions like "Is he towing with it?" "Is he hauling newspapers with it?" What morons!!! Don't they know they make a crappy diff and they have had nothing but problems with it!!! Getting very frustrated! Chris

[wildwhl]

Reminds me of my Dodge Dakota 4wd V8 that had a voided warranty on the transfer case because I "towed with it" (using factory installed tow package) and "abused it off road" (always, with a payload of fragile model airplanes in the back).

I have nothing to contribute. Just a post whore.

WW

[Sick03L]

I dropped off my 04 V that I just bought a week ago because it had a slight whine coming from the rear. While it was in they said the whine was not loud enough to warrent any repair but they the a couple seals were leaking and they replaced those.
I got bored yesterday and decided to crawl under the car and see what rear the car had installed in it. Much to my suprise it has the 06 updated rear allready install in the car! It makes sense now since I read that the 06 rears whine and leak.

[Caddynic]

I hate to hear that the CTS-V is having rear end problems. It always seems that GM goes 99% and then stops.

FYI, I did some searching on the 'net and it seems that Thunder Racing in Texas is going to release an aftermarket rear end for the CTS-V that will handle up to 2000hp.

It is apparentky undergoing testing. I think I will hold off buy a CTS-V untill this product is on the market and tested.

I found out about it at: LS1TECH - The fix for the CTS-V rear

[GreenMachine]

I wonder if its the same rear as in the vette? Probibly not, but if it is I wonder if its just the "extra pounds" that the CTS weighs that are causing extra strain, its not like you guys are doing burn-outs (often) and drifting a nurburgring tuned car.

[Vendetta-V-]

At 3,500 miles I noticed a slight whine. At 5,000 miles I noticed a rear axle fluid smell when getting out of the car. At 5,200 miles, I noticed leak marks in my garage, looked underneath and there she is...the dreaded rear axle leak.

I'm taking her in tomorrow.

Oh, and I also developed a coolant leak on the right side which splashed hot 'magma' onto my engine cover (trashcan) and put permanent marks on it.

I went through great lengths to drive the proper 500 miles on the car. I got it with 5 miles on it. Maybe the mandatory test drive that the factory tech did had something to do with it.

I have nine 1/4 mile runs. The first run was at 530 miles.

From the IQOV Website I just submitted to: Your Complaint Information is successfully submitted.
Your Confirmation number (ODI Number) is: 10167775

[trukk]

2005 V.

First diff replaced November 2005 @ 18k miles with the 'new' 2006 diff, due to severe whine.

I just had that diff replaced last week, while I was on vacation (props to James @ Lindsay). My first replacement was louder than the original, and had leaked diff fluid caked up on the outside. This was done at 35K miles.

We'll see how long this one lasts. I'm not hopefull. SOO FRUSTRATING.

-Chris

[Vendetta-V-]

Update: Dealer is replacing both my 2006 rearend and the radiator. Here we go!

[CVP33]

Originally Posted by trukk

2005 V.

First diff replaced November 2005 @ 18k miles with the 'new' 2006 diff, due to severe whine.

I just had that diff replaced last week, while I was on vacation (props to James @ Lindsay). My first replacement was louder than the original, and had leaked diff fluid caked up on the outside. This was done at 35K miles.

We'll see how long this one lasts. I'm not hopefull. SOO FRUSTRATING.

-Chris

Sorry to hear you joined the club that none of us wanted to be in.

[chet]

Report submitted, 2004 V with 05 diff. Now leaking with slight modulating
whine. Just changed the fluid 2nd time in 1 year this time Redline gave
me a bottle of friction modifier to add. Hope this helps.

Anyone know if it's a big deal to change the pinion seal yourself, my V's out of warrenty. I've changed other GM pinion seals B4.

I'm very discusted with this rear end problem. I cant believe that any car
made in this modern hightech world can have a stupid leak.

[The Tony Show]

After two fluid swaps to try and get rid of the whine and binding in turns, diff #2 is getting ready to go out to pasture. Diff #3 is on order under warranty. Yay.

[CTS (V)]

Originally Posted by heavymetals

I was gonna call on monday and bring that to their (NHTSA) attention as I assume GM is gonna try to fold in these failures with the regular CTS and skew the results in their favor.

they could, however, there is a section that you can fill in engine size.

we just need to make sure we're entering in that field. that way it can be reference by CTS with 5.7 or 6.0