2020 Cadillac XT6 Transmission and drivetrain Problems
- Complaints
- 9about this part
- Share
- 23%of 39 total for the year
- Median mileage
- 87,919miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the transmission and drivetrain of the 2020 Cadillac XT6, 23% of the 39 complaints for this model year. Where a mileage was given, the median is 87,919 miles. 1 recall campaign on record is filed under a similar system.
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.
“Vehicle has a high-pitched whining noise when cold. Vehicle also has a transmission shutter problem at lower RPM. I do not think the two are related rather than two separate incidences. But cannot be confirmed that they are two separate. Maybe one problem only. I do have video of this happening. Cannot upload a video though.”
NHTSA complaint #11648582, filed 2025-03“I was waiting for a light to change to green and the vehicle shut down because of the auto-stop feature, after a couple of seconds the car turned on again and this message came on stability track off and this happened like that like 3 times until I turned off the auto-stop. I took it to the dealer the next day and they scanned it for issue and told me there's nothing wrong with the vehicle.”
NHTSA complaint #11578590, filed 2024-03“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“Intermittent shifting problems. Is stuttering when shifting. There seems to be an ongoing problem according to online and G M itself why isn't this recalled. There is no starting point it is intermittent on going. At the 1st instance they recorded it but it didn't get fixed and now they want to see it happening again but it's intermittent how many times do I have to go back”
NHTSA complaint #11503842, filed 2023-01“The contact owns a 2020 Cadillac XT6. The contact stated that while accelerating from a complete stop and driving below 30 MPH, the vehicle shuddered, hesitated, and jerked. The vehicle was taken to the dealer, where it was diagnosed with burned transmission fluid and excessive metal shavings inside the fluid. The dealer determined that the transmission needed to be replaced. The vehicle was scheduled to be repaired. The contact associated the failure with NHTSA Campaign Number: 20V668000 (Power Train). …”
NHTSA complaint #11770052, filed 2026-10, 16,000 milesRelated recalls
- 20V668000Oct 29, 2020General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain…Covers: Cadillac XT6 2020, Chevrolet Equinox 2018–2020, Traverse 2018–2020 +9 more
Related service bulletins
- 11019516Apr 17, 2025This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
- 11013069Jan 9, 2025This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11011989Nov 27, 2024This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
- 11011904Nov 18, 2024This service bulletin provides 9th gear operation information to respond to customers that may comment on transmission shift operation.
- 11011225Oct 29, 2024This service bulletin advises the tech that the rotational Clicking Noise Heard After Engine Shut Down may be normal characteristics of the vehicle.
- 11011205Oct 28, 2024This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
- 11009466Sep 27, 2024This service bulletin provides a procedure to correct a customer concern of Shudders or Shakes at Low Speeds.
- 11009756Sep 17, 2024This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and…
- 11009088Sep 16, 2024This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be…
- 11006421Jul 24, 2024GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or…
Transmission and drivetrain: other model years
Other parts of the 2020 Cadillac XT6
12 complaintsBack-over prevention (rear camera)
8 complaintsEngine
4 complaintsOther or unknown
4 complaintsForward collision avoidance
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsExterior lighting
2 complaintsFuel system
2 complaintsSteering
2 complaintsBody and structure
2 complaintsAir bags
1 complaintsEngine cooling
1 complaints
← All problems reported for the 2020 Cadillac XT6
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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