| 2004-2007 Cadillac CTS-V General Discussion Discuss everything about the first generation Cadillac CTS-V that does NOT fall into either the Performance or Appearance Modification category. | Cadillac Forums: Diff Rebuild -- Is it worth it? 
08-25-09, 08:51 PM
|  | <----- go ahead and stare Cadillac(s): Maggied '05 CTS-V | | Join Date: Jan 2008 Location: West Chester, PA Age: 26 | | | Re: Diff Rebuild -- Is it worth it? Quote:
Originally Posted by ewill3rd
This is the old style with the updated seal and yoke. The original seal and yoke look a tad different but what you are looking for is the shape of the nose piece.
Here is the updated style that I call the '08 or the Gen III as it seems to have been dubbed.... notice the front piece, you cannot see the seal at all and it has a longer tapered nose piece that goes behind the dust sheild.  | This is the only picture I have of my original '05 diff. I guess this is the old style seal and yoke? And one torn up bushing. Glad I got this thing the heck out of my car... 
__________________ 05 CTS-V / maggie 2.8 / b&m shifter & uuc bushings / gto shift knob / kooks lts 1 3/4 + cats / magnaflow / k&n cai / fg2 shocks / hotchkis sways / hawk hps / 265|40 bfg kd / ngk tr6
434 rwhp / 412 rwtq..........are you new to the forum? READ THIS and then TRY THIS. | 
08-25-09, 10:39 PM
|  | Cadillac Technician Cadillac(s): none | | Join Date: Nov 2005 Location: Alexandria, VA Age: 41 | | | Re: Diff Rebuild -- Is it worth it? Yes that is the Gen I and Gen II original seal.
The Gen II pic I posted has the TSB modification style seal installed.
All the replacement parts for the seals are that kit as pictured.
None of the factory style Gen I and II seals are available, you have to install the updated seal and yoke.
__________________ Views expressed by the author of this post do not necessarily represent those of the Lindsay Automotive Group. | 
08-26-09, 09:49 AM
|  | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Diff Rebuild -- Is it worth it? Excellent pics! Thanks!
Well, I've got a vid with audio uploaded to youtube ... just waiting for "processing" to be completed so I can post a link.
__________________ '05 CTS-V, Stealth Gray, Sunroof, 3M Clear Bra, B&M Shifter w/UUC Bushings, Specter Werkes Bushings, V Headrests, Wheel To Wheel Powertrain Tune, Corsa, Kooks w/Hi-Flo Cats, Ultimate Grid Pedals, Hotchkis Anti-Sways, STS-V Fogs, Ground Control 650R/600F, WW Clear Sidemarkers, Full-Size Spare, Magnuson SC Polished, CTS Console, FG2, Aggressive Street Alignment, MOMO Shift Knob, DSS/Hendrix Engrg Axles, UUC Flywheel. Soon: UUC MMs. 472 RWHP/411 RWTQ (Mustang dyno). | 
08-26-09, 10:02 AM
|  | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Diff Rebuild -- Is it worth it? Here's the vid. Sorry, it's a bit long (~4 minutes): | 
08-26-09, 11:33 AM
|  | Cadillac Technician Cadillac(s): none | | Join Date: Nov 2005 Location: Alexandria, VA Age: 41 | | | Re: Diff Rebuild -- Is it worth it? I am websense blocked at work from videos. 
I'll try to watch it tonight or in the morning. | 
08-26-09, 04:40 PM
|  | Cadillac Owners Connoisseur Cadillac(s): '05 CTS-V, '00 SLS, 98 SLS, 89 Eldo, '80 Eldo | | Join Date: Mar 2006 Location: NYC Age: 38 | | | Re: Diff Rebuild -- Is it worth it? Quote:
Originally Posted by rand49er | It sounded like something is bumping around. Is that what your talking about? Is it the same thing you heard after the flywheel install?
__________________ '05 Platinum l LPE CAI l Magnaflow l V1 (hardwired), w/ custom mount l UUC shifter w/Lindsay bushings l UUC leather shift knob l K9 GEAR rear seat cover l CruiseCam l HID fogs l Falken RT-615s l Hotchkis sways W/Z06 end links l Billet A/C vent knobs l Hawk HP+/HPS l CG-Lock l Specter Werkes Bushings l Noah Custom cover l FG2s l Ground control 550/600 l MAGGIE 436RWHP/ 412RWTQ (Dynojet) l Heavys fire extinguisher bracket l Intercepter scan-gauge l Billet pedals l Meth l NO HEADERS | 
08-26-09, 05:25 PM
|  | <----- go ahead and stare Cadillac(s): Maggied '05 CTS-V | | Join Date: Jan 2008 Location: West Chester, PA Age: 26 | | | Re: Diff Rebuild -- Is it worth it? wow that's freakin weird. did this start after the new axles? can you feel it too?
whining and thumping?  | 
08-26-09, 05:35 PM
|  | CTS  ader Cadillac(s): 2006 CTS 3.6 // 2005 CTS-V | | Join Date: Dec 2006 Location: an I-294 traffic jam Age: 35 | | | Re: Diff Rebuild -- Is it worth it? Quote:
Originally Posted by CTSV_510 whining and thumping?  | I don't need that in the V. My kids to plenty of that.
__________________ | 
08-26-09, 06:21 PM
|  | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Diff Rebuild -- Is it worth it? Quote:
Originally Posted by Twitch It sounded like something is bumping around. Is that what your talking about? Is it the same thing you heard after the flywheel install? | No ... what I heard after the FW install was almost deafening.  I can reproduce it at will, but didn't in this vid. And, yeah, it sort of sounds like a shaft thumping around in an opening slightly larger in diameter than it is, like the driveshaft is bent slightly, but with no vibration that I can detect. Quote:
Originally Posted by CTSV_510 wow that's freakin weird. did this start after the new axles? can you feel it too?
whining and thumping?  | Can't feel a thing. Started at some point after the axles, but I didn't notice it till after the FW. Might've been there before, I dunno, but I had become on high alert and really started focussing on "noises" after the big grinding noise occurred. It's most prevalent in a mostly coasting condition, i.e. without accelerating or decelerating at 45 MPH, though I have heard it at slower speeds. Funny, don't notice it all until after a mile or two when things have warmed up a bit.
Could it be the axles? Maybe a lack of grease on the CVJs under the boots and I can't see it? It's definitely coming from back in the rearend somewhere, and that's a possibility. Nutz thought it might the pinion bearing.
Thanks, guyz.  Hopefully, ewill will chime in soon, too.
(I hate Mod Hell!  ) | 
08-26-09, 11:07 PM
|  | Cadillac Technician Cadillac(s): none | | Join Date: Nov 2005 Location: Alexandria, VA Age: 41 | | | Re: Diff Rebuild -- Is it worth it? I hear a few noises for sure, there is some diff whine... my headphones don't like that all left channel audio....
I hear what sounds like some loose shock mounts.
If you can take the back seat out and check all the nuts.
I hear something else too, not sure about that flag sound.... maybe I just can't hear it good enough in the video.
I didn't get much time to forum today, I was doing battle with an XLR fuel pump and found another issue.
I had an '09 V that needed a front shock also... etc.
It was hot today too.
Check those shock mounts and see if that doesn't help at least some.
If I get a chance I'll listen to that other stuff again in the morning. | 
08-27-09, 08:12 AM
|  | Cadillac Owners Connoisseur Cadillac(s): '05 CTS-V, '00 SLS, 98 SLS, 89 Eldo, '80 Eldo | | Join Date: Mar 2006 Location: NYC Age: 38 | | | Re: Diff Rebuild -- Is it worth it? Quote:
Originally Posted by rand49er
(I hate Mod Hell!  ) | You can always spend your way out of it
That's why I don't like other people working on the car. If you did all the work yourself, you'd probably know where to look. | 
08-27-09, 08:58 AM
|  | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Diff Rebuild -- Is it worth it? Quote:
Originally Posted by ewill3rd I hear a few noises for sure, there is some diff whine... my headphones don't like that all left channel audio....
I hear what sounds like some loose shock mounts.
If you can take the back seat out and check all the nuts.
I hear something else too, not sure about that flag sound.... maybe I just can't hear it good enough in the video.
I didn't get much time to forum today, I was doing battle with an XLR fuel pump and found another issue.
I had an '09 V that needed a front shock also... etc.
It was hot today too.
Check those shock mounts and see if that doesn't help at least some.
If I get a chance I'll listen to that other stuff again in the morning. | Thanks, ewill. I'll check those sometime today.
This whole thing could end up being something really stupid like that. I'm hoping so. Quote:
Originally Posted by Twitch You can always spend your way out of it
That's why I don't like other people working on the car. If you did all the work yourself, you'd probably know where to look.' | My wallet is bracing itself.
If I had had a lift, I may have attempted the FW myself. Ain't gonna happen, though. | 
08-27-09, 09:43 AM
|  | Cadillac Technician Cadillac(s): none | | Join Date: Nov 2005 Location: Alexandria, VA Age: 41 | | | Re: Diff Rebuild -- Is it worth it? It's hard to tell from the audio but that funky persistent double click on light bumps is usually a shock mount issue.
Not sure about the other sounds. Just eliminate that and if there is a change see if your production company can assemble another video...  | 
08-27-09, 10:22 AM
|  | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Diff Rebuild -- Is it worth it? Quote:
Originally Posted by ewill3rd ... that funky persistent double click on light bumps is usually a shock mount issue. ... | From that audio, it is hard to tell ... I agree.
But, those double clicks are coming from the drivetrain, more specifically, the diff while neither accelerating nor decelerating (coasting). That's the "play" between the flywheel and the rear tires, and again most of that is in the diff.
I'll back it up on rhino ramps (again) today and recheck every nut and bolt back there, especially the lower shock mounts and take out the rear seat and check the upper shock mounts. I sure as heck hope it's one of those things.
Thanks for you input ewill.  | 
08-27-09, 12:46 PM
|  | Cadillac Technician Cadillac(s): none | | Join Date: Nov 2005 Location: Alexandria, VA Age: 41 | | | Re: Diff Rebuild -- Is it worth it? I'll keep trying here... we'll beat this thing.
Maybe I need to fly up to MI?  | | Cadillac Discussion Tools | | |
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