2020 Cadillac XT6 Engine Problems
- Complaints
- 4about this part
- Share
- 11%of 38 total for the year
- Median mileage
- 80,369miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine of the 2020 Cadillac XT6, 11% of the 38 complaints for this model year. Where a mileage was given, the median is 80,369 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“2020 Cadillac XT6 with all options and new vehicle with less than 400 miles, fuel gauge indicator hash marks that show the level of fuel on the fuel gauge intermittently stop working upon engine startup. Dealer has already checked computer codes and found no error codes. Dealer states they have reset computers several times to correct this issue. Dangerous driving without knowing how much fuel is really in the fuel tank.”
NHTSA complaint #11373575, filed 2020-11, 900 miles“Vehicle has a known condition with many same year make and model that could cause the engine coolant thermostat to open at a lower temperature than intended. This condition has occurred. As a result the Malfunction Indicator Lamp (Check Engine Light) illuminates and a diagnostic trouble code is set and “steering assistance reduced” appear. The engine cooling fans also run after the engine is switched off. A recent bulletin has been posted to the 2021 Cadillac XT6 but is present in our 2020 as well. Upon calling the dealer our VIN was not on said recall/bulletin.”
NHTSA complaint #11704162, filed 2025-12“The contact owns a 2020 Cadillac XT6. The contact stated while driving at 35 MPH, the vehicle lost power. The vehicle was restarted from the Cadillac App via phone. The contact stated that during the second failure The steering assist is reduced drive with care warning message and the check engine warning light illuminated. The contact stated she called On-Star where she was informed the tire pressure, the engine, and the transmission needed attention. …”
NHTSA complaint #11632207, filed 2024-12, 159,838 miles“The Radiator is not functioning, confirmed by a mechanic at a dealership. An engine light did appear to notify me of the problem, however the car has been kept in great condition without accident or cause for the radiator to stop functioning in such a young vehicle.”
NHTSA complaint #11675322, filed 2025-07Related service bulletins
- 11026017Jun 5, 2025This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- 11024485May 15, 2025The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 11020254May 7, 2025This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in…
- 11019547Apr 22, 2025This service bulletin provides a procedure to test and replace the battery distribution fuse block if found the cause of the DTC and electric coolant pump inoperative.
- 11019543Apr 22, 2025This service bulletin provides diagnostic repair information to correct an oil leak in the engine.
- 11019503Apr 18, 2025This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California…
- 11017508Apr 3, 2025This service bulletin provides a procedure to add deadener to the batter tray bracket to correct customer concerns of a Service Engine Soon (SES), Reduced Power, Service Brake…
- 11017443Apr 2, 2025This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
- 11014634Mar 27, 2025This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
- 11017263Mar 25, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
Engine: other model years
Other parts of the 2020 Cadillac XT6
11 complaintsTransmission and drivetrain
9 complaintsBack-over prevention (rear camera)
8 complaintsOther or unknown
4 complaintsForward collision avoidance
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsFuel system
2 complaintsBody and structure
2 complaintsAir bags
1 complaintsEngine cooling
1 complaintsExterior lighting
1 complaintsLane departure
1 complaints
← All problems reported for the 2020 Cadillac XT6
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology