2014 Cadillac CTS Powertrain & Transmission Problems

The contact owns a 2014 Cadillac CTS. The contact was informed of NHTSA Campaign Number: 20V038000 (Power Train). The vehicle was taken to a dealer; however, the vehicle was not diagnosed or repaired. The dealer informed the contact that the recall remedy could not be performed because the transmission and axle had failed and required repair and replacement. The vehicle was not repaired. The manufacturer was made aware of the issue. The failure mileage was unknown.

My 2014 Cadillac CTS has been making what sounded like road noise. After another person road in my car that was not in it daily like I was, they told me how loud it really was. After further investigation, my rear differential has gone out at only 80,000 miles. It’s impossible to drive due to the extreme safety concerns for not only myself but other drivers on the turnpikes and highways.

own a 2014 Cadillac CTS (VIN: [XXX] ) that was serviced under GM Recall N192279370 for rear axle differential seizing. On [XXX], the dealership replaced the rear differential carrier assembly and performed the required hydraulic system bleed. At intake, their own multi-point inspection documented no issues with the transmission, radiator, or cooling system. Immediately after the recall repair, my vehicle experienced severe issues: transmission slipping and radiator contamination with transmission fluid. These problems did not exist prior to the recall service. The dealership now claims the damage resulted from “stop leak” in the system and refuses warranty coverage. However, stop leak was not used until after the failure occurred, and only as an emergency measure to get the car home safely. The evidence strongly indicates that the failure resulted from the recall service, possibly from improper reconnection or contamination during the repair. Their refusal to acknowledge responsibility leaves me with significant repair costs for a problem that began directly after their mandated safety recall work. I am requesting NHTSA’s assistance in investigating this case, as the failure appears to be linked to the recall repair and raises concerns of improper procedures during service. Documentation, including service invoices, inspection sheets, and repair notes, are available to support this complaint. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am filing a complaint against Wagner Cadillac in Tyler, Texas, regarding mishandled recall service that resulted in severe damage to my 2014 Cadillac CTS Vsport (3.6 Twin-Turbo). Timeline of Events: Wagner Cadillac performed Recall #N192279370 (rear differential). At the time, only the differential code was present. Their own multipoint inspection showed no issues with the cooling or transmission systems. Immediately after recall service, my rear axle warning light came on for the first time. Shortly after, the transmission cooler line at the radiator burst, causing coolant and transmission fluid to mix. This led to overheating, hard shifting, and slipping. To limp the car home safely, I used a stop-leak additive only after the breakdown. The Magnuson-Moss Warranty Act clearly states warranty coverage cannot be denied unless the additive directly caused the failure, which it did not. The damage had already occurred from the ruptured line. When I returned the vehicle, Wagner Cadillac falsely accused me of voiding coverage due to the additive. They then refused to repair my transmission or cooling system, leaving me with a $30,000+ estimate. Why They Are Responsible: The problems began only after recall work. During service, Wagner Cadillac could have: Over-pressurized the system during testing. Improperly disturbed or reinstalled transmission cooler lines. Failed to secure or bleed the cooling system. Any of these actions could have caused the rupture. Their refusal to acknowledge this shifts unlawful blame onto me. Additional Concerns: Instead of helping me, Wagner Cadillac attempted to solicit me to sell them my broken car and buy another vehicle from them — both before and after they denied repairs. This is unethical and exploitative. Impact: I paid cash for this car not long ago. I have now lost reliable transportation, lost my job due to lack of mobility, and face financial INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The gear shifter cable on my 2014 Cadillac CTS failed completely and without warning. The vehicle became totally inoperable and could not be shifted into Park, Neutral, Reverse, or Drive. There were no dashboard alerts or signs of failure. This matches the exact symptoms described in GM Recall No. 21V473000. However, my vehicle was excluded from further action because it had previously received a visual-only inspection during the recall window. No functional testing was performed. Despite being marked as “repaired,” the shifter cable failed exactly as described in the original recall. GM confirmed that the recall case was closed after a visual inspection per their protocol. But this inspection clearly failed to detect a dangerous mechanical defect. I have now been without a working vehicle for over two weeks, with the earliest dealership appointment not available until the week of July 7 — and a $180 diagnostic fee quoted, with no guarantee of repair coverage. This breakdown could have resulted in a crash or rollaway if it had occurred while driving or parked on an incline. It poses a serious safety risk not just to me but to the public. Vehicles cleared with insufficient inspection should not be excluded from protection. I respectfully request that NHTSA investigate this failure, hold GM accountable for prematurely closed recall cases, and consider requiring them to reopen and expand the campaign to include VINs like mine. I am willing to provide photos, documentation, and records as needed. Thank you for your attention and swift consideration.

The contact owns a 2014 Cadillac CTS. The contact stated that while driving 60 MPH, the contact heard an extremely loud bang, after which the vehicle lost motive power. The contact was able to pull to the shoulder of the roadway and observed smoke coming from the rear axle. No warning lights were illuminated. The vehicle was towed to an independent mechanic, who diagnosed a failure with the rear axle differential. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 20V038000 (Power Train); however, the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 170,000.

The contact owns a 2014 Cadillac CTS A. The contact stated while driving at approximately 45 MPH she heard an abnormal sound from the rear of the vehicle. The contact stated that it sounded like an amplified road noise. Additionally, the contact stated that there was an intermittent sharp jarring of the vehicle. The contact stated that the vehicle was downshifting to a lower gear independently. The contact stated no warning light was illuminated. The contact had taken the vehicle to an independent mechanic who had diagnosed and determined that the differential was cracked and needed to be replaced. The vehicle was not repaired. The contact had researched online and related the failure to NHTSA Campaign Number: 20V038000 (Power Train). The manufacturer was informed of the failure. The failure mileage was approximately 70,000.

The contact owns a 2014 Cadillac CTS. The contact stated that while driving at an undisclosed speed, the vehicle made an abnormally loud sound. The vehicle was taken to an independent mechanic, who diagnosed that the rear differential needed to be replaced; however, the part was on backorder. The vehicle was not repaired. The manufacturer was made aware of the failure but did not assist. The failure mileage was approximately 41,000.

The gears inside the rear-differential of a 2014 CTS Luxury 3.6 liter Cadillac, with 48,000 miles, failed to the point where the whole differential had to be replaced. This defect is extremely dangerous to the owner of the vehicle, as well as others on the road. If the differential fails to the point where the tires lock up, the driver can lose control of the car. There were no warning messages relating to the problem and the problem did not come on gradually. There was a sudden loud grinding noise that came from the rear of the car, while driving, and the car was immediately taken to a Cadillac dealership for inspection. The dealership mechanic/technician determined that the rear differential completely failed and needed to be replaced. (The oil was drained from the differential and there were metal shavings inside the oil.) Upon research on the internet, it was determined that this rear-differential defect is an extensive problem, as other 2014 Cadillac CTS owners are experiencing a similar problem. Cadillac has recalled the 2014 CTS-V for this rear differential defect but has not acknowledged the same problem with the 2014 CTS 3.6 liter (it appears to be the same product/part design.)

My car was unsafe to drive. It would not shift into drive. I had it towed to a mechanic who diagnosed the problem. I was informed the differential was the problem. I could not drive my car until the repair was done. No one had the differential part in the USA. My car is 2014 CTS with only 66,000 miles. Can I be reimbursed for this repair?

The contact owns a 2014 Cadillac CTS. The contact stated while driving 40 MPH, he heard a loud abnormal scraping sound coming from the rear of the vehicle. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the rear axle differential assembly. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 20V038000 (Power Train) but the VIN was not included. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 94,000.

The contact owns a 2014 Cadillac CTS. The contact stated that while driving at an undisclosed speed, he heard an abnormal sound coming from the rear wheels. The vehicle was taken to the dealer and diagnosed with metal shavings inside the rear differential. The contact was informed that the rear differential needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 66,500.

2014 CTS 3.6 Differential was replaced in 2019 under manufactures warranty. Les than 50k miles later the differential has gone out again. The dealer will not honor the previous install and wants to charge me close to $6k to fix. This is a known problem with every model because they all have the same differential. GM will only honor the turbo version of the 2014 CTS with the same defective rear end. This can be very dangerous if the rear end locks while driving at any speed. GM is putting my family and others on the road by ignoring a known issue. I am calling out Putnam Cadillac in Berlingame Ca. taking a blind eye to a known issue.

Differential is going bad and it’s only got 60k miles on it and if the wheels lock up that is bad. And I can’t find the part nowhere.

The rear differential is making a howling noise. The CTS V sport was recalled but not the regular CTS. Many other customers have made compliant on different websites. I am hoping to have the recall done so I don’t have to spend money on the car. It will be an expensive fix.

The contact owns a 2014 Cadillac CTS. The contact stated while driving at various speeds, there was a grinding sound coming from rear end of the vehicle. The vehicle was taken to the local service center who discovered metal shavings inside in the rear differential fluid and informed the contact that the rear differential needed to be replaced. The vehicle was not yet repaired. The local dealer was notified of the failure, but no assistance was offered. The manufacturer was not yet contacted. The failure mileage was 84,000.

• Rear Differential is malfunctioning and is making a loud roaring,grinding noise. Is available for inspection. • Safety concern is no warning lamps notify you of malfunction and if differential goes out while driving wheels can lock up and increase the chance of a crash, And is a danger to passengers as well. • Called Dealer and was told part was discontinued probably because they know it is a bad part. Was told to rebuild or find a used part from junkyard. 2 independent service centers confirmed differential is malfunctioning. • No warning lamps to notify you , loud roaring,grinding noise can be heard .

POWER TRAIN | DIFFERENTIAL | REAR AXLE BLOWN | ROLL PINS FRACTURED YES = INSPECTION AVAILABLE YES = Safety of family and friends lives were at risk at any moment the differential decides to cease up. LOCAL CADILLAC DEALERSHIP INSPECTED + INDEPENDENT MECHANIC INSPECTED NO WARNING LAMPS PRIOR TO DIFFERENTIAL MALFUNCTIONING + ROARING NOISE AFTER MALFUNCTION SERVICE ENGINE + SERVICE STABILTRAC + TRACTION CONTROL LIGHT EMITTED. CAUSE = GM CADILLAC SAFETY FRAUD + DEFECTIVE DIFFERENTIAL Thousands of complaints online. GM is only recalling the CTS-V series and no other CTS when its clear and evident that all CTS's 2014-2015 DIFFERENTIALS ARE DEFECTIVE. OWNERS ARE LEFT WITH NO OPTIONS AND VEHICLE OF NO VALUE = COMPLETE LOSS DUE TO GM STOPPING PRODUCTION OF DIFFERENTIAL & PROVIDING NO RECALL. THERE ARE NO DIFFERENTIALS IN THE USA TO REPAIR VEHICLE. EVEN CTS-V TIER THAT IS RECALLED ARE GETTING NO HELP & GM TURNS A BLIND EYE THIS IS CRIMINAL | NO RECALL | NO EQUIVALENT VEHICLE OFFERED FOR TRANSPORTATION COMPLETE LOSS OF INVESTMENT | UPSIDE DOWN ON FINANCES | HARDSHIPS CTS WAS RATED WITH A 5-STAR SAFETY RATING = COMPLETE FRAUD ITS A MAJOR SAFETY VIOLATION AND RISK TO CTS OWNER'S / FAMILIES AS WELL AS ANYONE ON THE ROAD THATS NEAR A CTS WHEN DIFFERENTIAL GOES BAD WITH NO PRIOR WARNINGS. AT THIS POINT OWNERS HAVE BEEN WAITING YEARS FOR A SOLUTION THAT GM WILL NOT PROVIDE. WHICH IN MY EYES IS CRIMINAL AND KNOWING ABOUT HOW SEVERE THIS ISSUE IS AND DOING NOTHING TO SHOW THEY CARE FOR THEIR CONSUMERS. GM / CADILLAC SHOULD BE INVESTIGATED ON THIS ISSUE IMMEDIATELY WITH AN IMMEDIATE SOLUTION | LIVES ARE AT RISK. ALSO WHOMEVER DETERMINED THAT THE VEHICLE HAS A 5-STAR SAFETY LABEL. PEOPLE HAVE DIED DUE TO THIS DIFFERENTIAL GOING BAD AT HIGH SPEEDS. AND THE PROBLEM IS LISTED EVERYWHERE ONLINE BY ALL TIER LEVEL 2014-15 CTS OWNERS. NOT ONLY ARE OWNERS ROBBED THEIR LIFE IS PUT AT RISK OF DEATH PLUS THE LOSS OF TRANSPORTATION = LOSS OF JOB = DOWNWARD SPIRAL.

The contact owns a 2014 Cadillac CTS. The contact stated that while driving at various speeds, an abnormally loud grinding sound was coming from the rear end of the vehicle. The vehicle was initially taken to an independent mechanic and the contact was informed of a fault with the rear differential. The mechanic referred the contact to the dealer for assistance. Once at the dealer, it was confirmed that the rear differential had experienced internal grinding and needed to be replaced. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 50,000.

Rear Differential is failing, making a loud grinding, howling, screeching sound. Cadillac has already recalled rear diff on same year CTS-V (some models), but not for this or other CTS models, but finding replacement parts is almost impossible because a LOT of people are having the exact same failure.