DOT is finally investigating the differential problem with CTS and CTS-Vs
Teching In
Joined: Oct 2005
Posts: 5
Likes: 0
While I do not own a CTSV, I am following the thread. Please inform me if you can, what rear axle Caddy intends to use in the new 550 HP supercharged V.
Please do not tell me the GTO rear end. Caddy should, indeed, must install a Dana 44 to hold the extra power.
Does anyone have any info regarding this??
Please do not tell me the GTO rear end. Caddy should, indeed, must install a Dana 44 to hold the extra power.
Does anyone have any info regarding this??
I don't know the specs but they have decided to overengineer it now rather than go through the same issues
Teching In
Joined: Oct 2005
Posts: 5
Likes: 0
No kidding, there I was just cruising north on 31W, I down-shifted, mashed the gas and hop hop hop I got out of it and a few minutes later I downshifted again, this time BANG, parts and oil all over the road. the Diff grenaded.
OK folks I have read this thread, does any one have contact info? I have Mr. McHenry's number at NHTSA and have e-mailed him. I have the one Guys receipt for the warranty work.
However I need any data that I can use to give to the dealer here. They are small town and don't even sell V's much less have any knowledge of the failure rate.
One of you said that GM is required to send paperwork to the DOT. Any Link to documentation or proof that I can give the service MGR?
One of you said that Getrag has a report on the Diff and its nature. Any link to proof of that statement?
One of you said that you have only heard of 2 or 3 of these failures, here's the link to the 68 known cases that the NHTSA is currently included in the investigation:
http://www-odi.nhtsa.dot.gov/cars/pr...intVersion=YES
OK folks I have read this thread, does any one have contact info? I have Mr. McHenry's number at NHTSA and have e-mailed him. I have the one Guys receipt for the warranty work.
However I need any data that I can use to give to the dealer here. They are small town and don't even sell V's much less have any knowledge of the failure rate.
One of you said that GM is required to send paperwork to the DOT. Any Link to documentation or proof that I can give the service MGR?
One of you said that Getrag has a report on the Diff and its nature. Any link to proof of that statement?
One of you said that you have only heard of 2 or 3 of these failures, here's the link to the 68 known cases that the NHTSA is currently included in the investigation:
http://www-odi.nhtsa.dot.gov/cars/pr...intVersion=YES
Teching In
Joined: Sep 2009
Posts: 2
Likes: 0
From: Basehor, KS
OK I've just purchased a 2006 CTS-V. It now has 1600 miles on it so barely broken in. Are the rears on these cars really as fragile as the last 5 pages of posts indicate? This is a performance car after all.
I don't intend on thrashing the car at every intersection like I'm 16 again I do that with my old 71 Riviera (139K miles and still smokes em). The car in indestructible.
I'd hate to think the occasional stoplight 0-60 test or downshift into a corner on a twisty country road with a 50K original sticker "performance car" will leave a trail of parts and diff fluid in my wake after as few as 10-15k miles.
I bought the car instead of a 2010 SS Camaro. Why have a plastic chevy interior and only 2 doors when I could have all the luxury of a Cadillac sedan with the performance of the Corvette to boot. With 2 kids the CTS-V's 4 doors made it a much easier sell to the wife.
If I'm forced to drive it like a V6 what's the point in having the vette motor? Another case of bait and switch?
Mike
I don't intend on thrashing the car at every intersection like I'm 16 again I do that with my old 71 Riviera (139K miles and still smokes em). The car in indestructible.
I'd hate to think the occasional stoplight 0-60 test or downshift into a corner on a twisty country road with a 50K original sticker "performance car" will leave a trail of parts and diff fluid in my wake after as few as 10-15k miles.
I bought the car instead of a 2010 SS Camaro. Why have a plastic chevy interior and only 2 doors when I could have all the luxury of a Cadillac sedan with the performance of the Corvette to boot. With 2 kids the CTS-V's 4 doors made it a much easier sell to the wife.
If I'm forced to drive it like a V6 what's the point in having the vette motor? Another case of bait and switch?
Mike
Many people have had no problems with their rear ends. Good news is you have an '06 that has the upgraded diff. My diff was replaced & upgraded to the newer '06/07 style due to a slight whine which is many times more common than catastrophic failure. Long story short, don't wheel hop the bloody thing, and it should last you.
Teching In
Joined: Oct 2005
Posts: 5
Likes: 0
I have owned the car for three years. I have driven it very agressively and I will never own another performance car. I am sold. I will however buy the 09/2010 V as soon as the price comes down into my range. I love it and I have not met a C-5 Vette, Mercedes or BMW yet that I haven't smoked. OH! and thats not to mention the Porsche speedster I whipped on the track in seattle! This rearend issue will be fixed and I will be riding again soon.
Look under the car and see which diff you have. they did fix the problem for 06 and beyond.
Look under the car and see which diff you have. they did fix the problem for 06 and beyond.
On The Tree
Joined: Nov 2005
Posts: 116
Likes: 0
From: Riverview,Fl
Just found this and thought it should go here:
Make: CADILLAC
Model: CTS
Year: 2006
NHTSA Action Number: EA07017
Summary:
IN JULY OF 2007 THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED PE07-037 TO INVESTIGATE ALLEGATIONS THAT THE REAR DIFFERENTIAL MAY FAIL CAUSING A LOSS OF MOTIVE POWER, AND IN SOME INSTANCES A LOSS OF CONTROL, IN MODEL YEAR (MY) 2004 THROUGH 2006 CADILLAC CTS, CTS-V, AND STS VEHICLES. AS A RESULT OF THAT INVESTIGATION GM ISSUED RECALL 07V-589 TO CORRECT A LEAKING PINION SEAL PROBLEM. EA07-017 WAS OPENED TO INVESTIGATE COMPLAINTS OF FRACTURED REAR DIFFERENTIAL HOUSINGS OR REAR HALF SHAFTS IN HIGH PERFORMANCE CADILLAC CTS-V VEHICLES. ACCORDING TO GM, THESE FAILURES RESULTED FROM THE CUMULATIVE DAMAGE FROM MULTIPLE POWER HOP EVENTS THAT CAN OCCUR DURING VERY AGGRESSIVE DRIVING. IN FEBRUARY 2008 INVESTIGATORS FROM ODI MET WITH GM REPRESENTATIVES TO CONDUCT TESTING OF THE SUBJECT CTS-V VEHICLES. DURING THE TESTING THE SUBJECT VEHICLES WERE SUBJECTED TO CONSIDERABLE TORSIONAL FORCES FROM STANDING STARTS AND WHILE DRIVING. POWER HOP OCCURRED DURING SOME OF THE MOST AGGRESSIVE DRIVING MANEUVERS. THE TESTING DID NOT RESULT IN FAILURE OF ANY REAR DRIVETRAIN COMPONENTS. THE ENGINEERING DESIGN AND TESTING DATA SUPPLIED TO ODI BY GM AND THE RESULTS OF THE TESTING CONDUCTED BY ODI TEND TO SUPPORT GM'S POSITION THAT THE DIFFERENTIAL DESIGN IS NOT DEFECTIVE. COMPLAINTS LISTED IN THE FAILURE REPORT DO NOT INCLUDE THOSE INDICATIVE OF FAILURE OF THE REAR PINION SEAL IN CTS-V VEHICLES COVERED BY RECALL 07V-589. FURTHER INVESTIGATION IN THIS MATTER WOULD NOT BE AN EFFICIENT ALLOCATION OF AGENCY RESOURCES. ACCORDINGLY, THIS INVESTIGATION IS CLOSED. SEE ATTACHED CLOSING REPORT FOR FURTHER DETAILS.
source: http://www-odi.nhtsa.dot.gov/cars/pr...&model_yr=2006
Make: CADILLAC
Model: CTS
Year: 2006
NHTSA Action Number: EA07017
Summary:
IN JULY OF 2007 THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED PE07-037 TO INVESTIGATE ALLEGATIONS THAT THE REAR DIFFERENTIAL MAY FAIL CAUSING A LOSS OF MOTIVE POWER, AND IN SOME INSTANCES A LOSS OF CONTROL, IN MODEL YEAR (MY) 2004 THROUGH 2006 CADILLAC CTS, CTS-V, AND STS VEHICLES. AS A RESULT OF THAT INVESTIGATION GM ISSUED RECALL 07V-589 TO CORRECT A LEAKING PINION SEAL PROBLEM. EA07-017 WAS OPENED TO INVESTIGATE COMPLAINTS OF FRACTURED REAR DIFFERENTIAL HOUSINGS OR REAR HALF SHAFTS IN HIGH PERFORMANCE CADILLAC CTS-V VEHICLES. ACCORDING TO GM, THESE FAILURES RESULTED FROM THE CUMULATIVE DAMAGE FROM MULTIPLE POWER HOP EVENTS THAT CAN OCCUR DURING VERY AGGRESSIVE DRIVING. IN FEBRUARY 2008 INVESTIGATORS FROM ODI MET WITH GM REPRESENTATIVES TO CONDUCT TESTING OF THE SUBJECT CTS-V VEHICLES. DURING THE TESTING THE SUBJECT VEHICLES WERE SUBJECTED TO CONSIDERABLE TORSIONAL FORCES FROM STANDING STARTS AND WHILE DRIVING. POWER HOP OCCURRED DURING SOME OF THE MOST AGGRESSIVE DRIVING MANEUVERS. THE TESTING DID NOT RESULT IN FAILURE OF ANY REAR DRIVETRAIN COMPONENTS. THE ENGINEERING DESIGN AND TESTING DATA SUPPLIED TO ODI BY GM AND THE RESULTS OF THE TESTING CONDUCTED BY ODI TEND TO SUPPORT GM'S POSITION THAT THE DIFFERENTIAL DESIGN IS NOT DEFECTIVE. COMPLAINTS LISTED IN THE FAILURE REPORT DO NOT INCLUDE THOSE INDICATIVE OF FAILURE OF THE REAR PINION SEAL IN CTS-V VEHICLES COVERED BY RECALL 07V-589. FURTHER INVESTIGATION IN THIS MATTER WOULD NOT BE AN EFFICIENT ALLOCATION OF AGENCY RESOURCES. ACCORDINGLY, THIS INVESTIGATION IS CLOSED. SEE ATTACHED CLOSING REPORT FOR FURTHER DETAILS.
source: http://www-odi.nhtsa.dot.gov/cars/pr...&model_yr=2006
Launching!
Joined: Sep 2009
Posts: 268
Likes: 0
The part # for yours should be the same as mine which is 15793756.
The replacement upgraded rear is part # 25873498.
The location of the part number sticker is on the right center backside.
You cannot see it, but with a mirror and light, or reach up there with a camera and point it slightly downward to obtain a photo.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
TECH Apprentice
Joined: Sep 2010
Posts: 364
Likes: 0
From: Southern MD
I have an '07 with very low miles and no problems yet.
The part # for yours should be the same as mine which is 15793756.
The replacement upgraded rear is part # 25873498.
The location of the part number sticker is on the right center backside.
You cannot see it, but with a mirror and light, or reach up there with a camera and point it slightly downward to obtain a photo.
The part # for yours should be the same as mine which is 15793756.
The replacement upgraded rear is part # 25873498.
The location of the part number sticker is on the right center backside.
You cannot see it, but with a mirror and light, or reach up there with a camera and point it slightly downward to obtain a photo.
Launching!
Joined: Sep 2009
Posts: 268
Likes: 0
Why would you think the numbers I posted would be the carrier bearing and not the part number for the rear?
Babrown - that's not a solution. Plenty of completely stock V's have blown rear ends. The best solution right now is just to stay outta the wheel hop. And if it blows, take some $$ off the line of credit and get yourself a 4th gen (or whatever gen applies at that time).
Registered User
Joined: Feb 2011
Posts: 1
Likes: 0
Well, there certainly isn't a shortage of rear end discussions here. I gotta say, I don't think what version you have or how you drive matters. Here's my story...
I have an '05 V (bought it new). The original rear started whining at around 20K miles, and the dealer replaced the entire unit, saying there is a "real" problem with it. I don't know what version of rear it was replaced with though.
That rear started whining at around 50K. It was replaced, no questions asked again. This time with a '06 version (based on part number 157xxxx). This time around, I started to baby the car. Both to try and save the rear, and to save on tires. I started to routinely take off in second, no hard shifts, and never wheel hopped. As evidence, I got between 5-8k miles more out of my tires.
Come ~60k miles... another nasty whine, and another rear replacement (again, no questions asked). This time, part number 258xxx, which I was told is the latest version. Now I really started to baby the car. Any hard accelerations were done smoothly, no hard shifting, no wheel hops, etc. Now I'm getting 10K more miles out of my tires (more evidence of old fart driving).
Well, here I am at 80K miles, and the rear is whining louder that it ever has in the past. Sure am glad I got the extended warranty, and I'm glad my dealer recognizes this to be a problem.
For reference, the whining mentioned above has been consistent. It starts out while coasting from 50 down to 45. It eventually gets significantly louder and expands from 60 down to 40, and can be heard with the windows open and the radio on.
I have an '05 V (bought it new). The original rear started whining at around 20K miles, and the dealer replaced the entire unit, saying there is a "real" problem with it. I don't know what version of rear it was replaced with though.
That rear started whining at around 50K. It was replaced, no questions asked again. This time with a '06 version (based on part number 157xxxx). This time around, I started to baby the car. Both to try and save the rear, and to save on tires. I started to routinely take off in second, no hard shifts, and never wheel hopped. As evidence, I got between 5-8k miles more out of my tires.
Come ~60k miles... another nasty whine, and another rear replacement (again, no questions asked). This time, part number 258xxx, which I was told is the latest version. Now I really started to baby the car. Any hard accelerations were done smoothly, no hard shifting, no wheel hops, etc. Now I'm getting 10K more miles out of my tires (more evidence of old fart driving).
Well, here I am at 80K miles, and the rear is whining louder that it ever has in the past. Sure am glad I got the extended warranty, and I'm glad my dealer recognizes this to be a problem.
For reference, the whining mentioned above has been consistent. It starts out while coasting from 50 down to 45. It eventually gets significantly louder and expands from 60 down to 40, and can be heard with the windows open and the radio on.
TECH Apprentice
Joined: Dec 2011
Posts: 365
Likes: 0
From: Maryland, but home in Detroit alot!
I have an 05 and my diff whines like a 2 year old... bought her at 62300 and now at 67905 and getting the right rear axle replaced. Praying the diff doesn't go next...
Last edited by NOLAG05; Feb 7, 2012 at 08:52 PM.
TECH Enthusiast
Joined: Jan 2009
Posts: 574
Likes: 1
From: miami
So I have a question. Is there a recall on it where a car out of warranty can have it replaced or does it have to remain under warranty. I ask because I'm at 82k miles and just started to hear a whine on the highway during acceleration/deceleration at about 60mph and wonder if the dealer will replace. Thanks...
Registered User
Joined: Aug 2015
Posts: 3
Likes: 0
hi my name is erik and i cannot figure out hot to start a new thread so im just gonna post in here. i have a 2008 cts-4 hot lava edition with the 3.6 di vin code V. my front end keeps binding and making the tires squeal and it feels like its gonna fall apart at any time. ppl keep telling me its normal but i say b.s. for the simple reason that right b4 i bought this one i had a 2008 sts-4 and they have exactly the same front end parts and it did not do anything even remotely close to what this one does. i did test drive several cts-4's and not one of them did what mine does. any ideas? thanks
