Table 1 shows one common power train related problems of the 2018 Cadillac ATS.
| Problem Category | Number of Problems |
|---|---|
| Power Train problems |
The vehicle has suffered a severe mechanical failure of the rear differential assembly, rendering it completely undrivable. This mechanical failure is a direct result of a known manufacturer defect documented in general motors technical service bulletin pip5898/pip5898b, regarding misoriented factory side bearing retaining snap rings that block internal oil ports, leading to fluid leaks, severe fluid starvation, and eventual component seizure. The component failure poses an extreme safety hazard to myself and other motorist. When a rear differential suffers catastrophic failure, this is known to cause the rear wheels and tires to lock up completely while driving leading to immediate loss of vehicle control, skidding, and high risk of high speed rear-end or rollover crash. General motors has acknowledged this defect internally via technical bulletins but has failed to issue a safety recall to protect consumers from the catastrophic locking risk. I am filing this complaint to request that NHTSA open a formal defect investigation into the 2018 Cadillac Ats rear axle assembly.
Rear differential. This part will be available after removal. This put me at risk of potentially locking up while driving. According to the dealership, faulkner Cadillac, "found rear differential bearings damaged, causing noise in the rear end. The rear differential will need replaced. " there were no warning lights, but there was noise - a new, not normal noise I noticed two weeks prior to the diagnostic procedure by the dealership service department. This is the second rear differential failure. The service writer said there was no sign of leakage.
The contact owns a 2018 Cadillac Ats. The contact stated while driving at undisclosed speeds, there was an abnormal growling sound coming from the vehicle. The contact looked underneath the vehicle, checked the tires, and checked the inside of the vehicle but found no failure. The contact continued to drive the vehicle and heard an abnormal winding or rubber sound. There were no warning lights illuminated. The vehicle was towed to the local dealer, where it was diagnosed and determined that the differential needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 84,000.
Unexpected shutter of vehicle, loss of power, unpredictable forward motion, erratic movement, delayed acceleration.
2018 Cadillac Ats (most of the Cadillac vehicles reported same issue). The transmission fluid is wrong fluid by manufacturer and driving at regular speed all of a sudden it starts shuddering and loses power or slows down at freeway speeds or any local roads. Took the car for inspection to a local dealer and they said it is the transmission fluid which has to be upgraded and charged me hundreds of dollars. But how it is not recalled by gm since they sold the cars with wrong transmission fluid which is causing these issues?.
Transmission shudder noticed between 42 to 48 mph. It appears the transmission is shaking, it seems to be continually shifting between gears in the 42 to 48 mph range.
High pressure fuel pump.