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Engine & cooling

2015 Cadillac CTS Engine problems

Owners have filed 5 complaints about the 2015 Cadillac CTS's engine & cooling with NHTSA - 10% of all its complaints, most recently on July 25, 2025. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Complaints
5
Recalls
0
Crashes
0
Fires
0
Injuries
0
Deaths
0

Engine complaints

SuspensionBrakesEngine & cooling

The contact owns a 2015 Cadillac CTS. The contact stated that while driving at undisclosed speeds, there was a loud grinding and squeaking sounds coming from the vehicle. Additionally, there was a high-pitched sound coming from the vehicle. The contact also stated that the water pump was inoperable. There were no warning lights illuminated. The vehicle was taken to an independent mechanic who determined that the brake pads and rotors needed to be replaced, and the rear differential was leaking. The vehicle was...

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repaired, but the failure recurred. The water pump was replaced under the warranty. The contact stated that the brake pads and rotors needed to be replaced every two months. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 72,000.

Filed Incident Suspension · Service brakes · EngineNHTSA 11676097
BrakesEngine & cooling

What component or system failed or malfunctioned, and is it available for inspection upon request? Brakes , emergency brake , engine overheating , How was your safety or the safety of others put at risk? Car shut off in the highway while i was with my kids Has the problem been reproduced or confirmed by a dealer or independent service center? yes it went in the shop 05/12/22 but problem with car still continued Has the vehicle or component been inspected by the manufacturer, police, insurance representatives...

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or others? Yes i dont know how it passed due to emergency brake and engine & brakes Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? yes first engie light came on then car shut off

Filed Incident Unknown or other · Service brakes · EngineNHTSA 11475966
Transmission & drivetrainBrakesEngine & cooling

The vacuum pump failed and caused catastrophic engine failure. The vacuum pump was constructed with substandard design and the composition of the parts within the vacuum pumps internal components. The vacuum pump is an integral part of the emissions system, the braking system and the engine. This is not an isolated incident as the replacement vacuum pump, even if replaced, will fail again. The pump should have been designed with a shear pin so the engine camshaft would not have been destroyed.

Filed Incident Power train · Service brakes · EngineNHTSA 11473795
Engine & cooling

2015 Cadillac cts. Consumer stated that the exhaust was damaged while having a safety recall n192279370 repaired.

Filed Incident Engine and engine coolingNHTSA 11465390
SuspensionTransmission & drivetrainEngine & cooling

Engine sounds like a truck, while driving. Just purchased the vehicle. 30,000 Miles on odometer.

Filed Incident Suspension · Power train · EngineNHTSA 11322127

Cadillac CTS engine complaints by year

CTS engine problems, every year

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Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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