2017 Cadillac CT6
Here’s a breakdown of common issues reported for the 2017 Cadillac CT6, categorized by major component and engine/transmission options, formatted for your website.
The 2017 Cadillac CT6 is a full-size luxury sedan that offers a blend of comfort, technology, and performance. Available engine options include a 2.0L turbocharged inline-4 (265 hp, 295 lb-ft torque), a 3.6L V6 (335 hp, 284 lb-ft torque), and a 3.0L twin-turbo V6 (404 hp, 400 lb-ft torque). A plug-in hybrid model was also available. The 2.0L turbo-4 was paired with an 8-speed automatic transmission. The V6 engines typically came with an 8-speed automatic transmission, although specific configurations and model years may vary. Owners generally appreciate the CT6’s spacious interior, comfortable ride, and advanced technology features. However, some common complaints include the complexity of the infotainment system, certain reliability concerns, and higher maintenance costs compared to some competitors.
Engine
2.0L Turbocharged Inline-4
- Excessive Oil Consumption
- Description/Symptoms: Some owners have reported higher-than-normal oil consumption, requiring frequent oil top-offs. Symptoms include low oil level warnings and the need to add oil between scheduled changes. This can stem from piston ring issues.
- Solution: Diagnosis may involve oil consumption tests. Replacement of piston rings may be required in severe cases.
- Estimated Cost to Fix: $2,000 - $4,000+
- Recalls: None Found
3.6L V6
- Timing Chain Wear/Failure
- Description/Symptoms: The 3.6L V6, like other engines in the GM family, can be susceptible to timing chain wear. Symptoms include a rattling noise at startup, check engine light with codes related to timing, and potential misfires.
- Solution: Replacement of the timing chain, guides, and tensioners. In some cases, camshaft phasers may also need replacement.
- Estimated Cost to Fix: $1,500 - $3,000+
- Recalls: None Found
- High Pressure Fuel Pump Failure
- Description/Symptoms: The high pressure fuel pump is responsible for sending fuel to the high pressure fuel rail. If this part fails, the vehicle may not start or stall while driving.
- Solution: Replacement of the high pressure fuel pump.
- Estimated Cost to Fix: $800 - $1,200+
- Recalls: None Found
3.0L Twin-Turbo V6
- Turbocharger Issues
- Description/Symptoms: Some owners have reported turbocharger failure or issues with the turbocharger wastegate actuators. Symptoms may include a loss of power, unusual noises from the engine, and a check engine light.
- Solution: Diagnosis to determine the specific turbocharger component that has failed. Replacement of the affected turbocharger or actuator.
- Estimated Cost to Fix: $2,500 - $5,000+ per turbocharger
- Recalls: None Found
Transmission
8-Speed Automatic Transmission (All Engines)
- Harsh Shifting/Hesitation
- Description/Symptoms: The GM 8-speed automatic (specifically the 8L45 or 8L90 depending on engine) used in the CT6 has been known to exhibit harsh shifting, hesitation, and “clunking” noises, especially during low-speed operation or when shifting between gears. The torque converter is a common cause.
- Solution: A transmission fluid flush using the updated Mobil 1 Synthetic LV ATF HP fluid (blue label). In some cases, a valve body replacement or torque converter replacement might be necessary. Software updates can also sometimes address the issue.
- Estimated Cost to Fix: Fluid flush $300-$500, Valve Body Replacement $800-$1500, Torque Converter $1000-$2500
- Recalls: None Found
Suspension
- Magnetic Ride Control (MRC) Issues
- Description/Symptoms: The CT6 features Magnetic Ride Control, which can provide a smooth and controlled ride. However, the MRC shocks can leak fluid or fail prematurely. Symptoms include a bouncy or unstable ride, particularly over bumps.
- Solution: Replacement of the affected MRC shocks.
- Estimated Cost to Fix: $800 - $1,500+ per shock
- Recalls: None Found
Electrical
- CUE Infotainment System Problems
- Description/Symptoms: The Cadillac User Experience (CUE) infotainment system can experience glitches, freezing, slow response times, and touchscreen failures.
- Solution: Software updates can sometimes resolve minor issues. In more severe cases, the CUE screen or the entire infotainment unit may need to be replaced.
- Estimated Cost to Fix: $500 - $1,500+
- Recalls: None Found
- Battery Drain
- Description/Symptoms: Some owners have reported issues with the battery draining overnight or within a few days of inactivity. This can be due to a parasitic draw from an electronic module.
- Solution: Diagnosis to identify the source of the parasitic draw. Repair or replacement of the faulty module.
- Estimated Cost to Fix: $100 - $500+ (depending on the source of the drain)
- Recalls: None Found
Exterior
- Sunroof Issues
- Description/Symptoms: Water leaks can occur around the sunroof.
- Solution: Cleaning and lubricating the sunroof seals and drainage channels. In some cases, replacing the sunroof seals may be necessary.
- Estimated Cost to Fix: $100-$500
- Recalls: None Found
Interior
- Seat Heater Malfunction
- Description/Symptoms: Front or rear seat heaters not functioning properly. May experience no heat or intermittent heat.
- Solution: Replacement of seat heater element, wiring repair, or module replacement.
- Estimated Cost to Fix: $300-$1000+
- Recalls: None Found
Summary
The 2017 Cadillac CT6 can be a comfortable and luxurious vehicle, but potential buyers should be aware of the common issues outlined above. Engine and transmission problems, particularly with the 3.6L V6 timing chain and 8-speed automatic transmission, can be costly to repair. Electrical issues with the CUE system are also relatively frequent. Suspension and interior problems can occur as well. Before purchasing a used 2017 CT6, a thorough inspection by a qualified mechanic is highly recommended, including checking for any signs of the mentioned issues. The severity of these issues ranges from minor inconveniences to major repairs, with costs ranging from a few hundred dollars to several thousand, depending on the problem.