2021 Cadillac CT5 Transmission and drivetrain Problems
- Complaints
- 4about this part
- Share
- 13%of 30 total for the year
- Median mileage
- 48,600miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the transmission and drivetrain of the 2021 Cadillac CT5, 13% of the 30 complaints for this model year. Where a mileage was given, the median is 48,600 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.
“Service transmission message showed up on dash. Dealer stated after performance test found P17A5 code for shift control. The dealer stated that the gear shift assembly needed to be replaced and if not, that the car could get stuck in gear which I feel is a safety risk. My vehicle only has 37,111 miles on it and I am pretty much the only driver.”
NHTSA complaint #11636164, filed 2025-01“I am filing a formal safety complaint against General Motors (GM) regarding an unresolved transmission safety hazard on my 2021 Cadillac CT5 550T. This vehicle is included under NHTSA Campaign Number 25V148000 for an internal transmission control valve failure that can cause sudden, dangerous wheel lock-up while driving. My vehicle is currently experiencing an active, catastrophic failure of the transmission valve body. …”
NHTSA complaint #11766791, filed 2026-09“The pump gear on the transmission went out during normal driving with only having 30,000 miles on it. I am told my numerous people that the Gm 10 speeds always have issues with them.”
NHTSA complaint #11760237, filed 2026-08“The contact owns a 2021 Cadillac CT5. The contact stated that while driving approximately 42 MPH – 66 MPH, the vehicle was shaking abnormally. The contact stated that while driving at an undisclosed speed, the vehicle jerked and shuddered while shifting gears. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure. The failure mileage was 48,600.”
NHTSA complaint #11681668, filed 2025-08, 48,600 milesRelated recalls
- 25V148000Mar 6, 2025General Motors LLC (GM) is recalling certain 2019-2020 Cadillac CT6, 2020-2021 CT4, CT5, and 2020-2022 Chevrolet Camaro vehicles equipped with a 10-speed…Covers: Cadillac CT5 2020–2021, Chevrolet Camaro 2020–2022, Cadillac CT6 2019–2020 +1 more
Related service bulletins
- 11018568May 27, 2025Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause…
- 11019516Apr 17, 2025This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
- 11015336Mar 7, 2025Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause…
- 11014565Feb 13, 2025This bulletin helps aid the tech in possible noise that may be normal or abnormal depending on the concern noted.
- 11013069Jan 9, 2025This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11012943Jan 9, 2025This Preliminary information communicates a possible retainer ring dis-lodged for a DTC P2714, may not have reverse as well.
- 11012009Nov 27, 2024This bulletin helps aid the tech in possible transmission noise that may be normal or abnormal depending on the concern noted.
- 11011993Nov 27, 2024This service bulletin provides repair information to correct customer concerns of Wheel Lock Up, ABS Event, Loud Bang and a Flashing “D” on Driver Information Center (DIC) when…
- 11011989Nov 27, 2024This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
- 11011205Oct 28, 2024This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
Transmission and drivetrain: other model years
Other parts of the 2021 Cadillac CT5
13 complaintsBody and structure
7 complaintsOther or unknown
4 complaintsAir bags
2 complaintsForward collision avoidance
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsBrakes
1 complaintsEngine
1 complaintsExterior lighting
1 complaintsFuel system
1 complaintsSeat belts
1 complaintsSteering
1 complaints
← All problems reported for the 2021 Cadillac CT5
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