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Vehicle speed controlPart report

2017 Cadillac CT6 Vehicle speed control Problems

Complaints
2about this part
Share
12%of 17 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the vehicle speed control of the 2017 Cadillac CT6, 12% of the 17 complaints for this model year.

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.

“My vehicles transmission has a buzzing noise coming from the transmission oil pan and a gear shifting problem I took vehicle to Cadillac dealer whom can’t find the issue they changed the oil pan and the transmission lines . My vehicle is a 2017 Cadillac ct6 with 72027 miles . I’ve been to 4 Cadillac certified dealers and none can locate to problem . Thank you . Also I would like to add that Cadillac open road In New Jersey has taken off my splash guards and would not return them . …”

NHTSA complaint #11655564, filed 2025-04

“The vehicle experiences harsh shifting, surging, and jerking forward during normal driving conditions. The behavior has occurred repeatedly over several years and has been confirmed by the dealership. Multiple repair attempts, including transmission-related work, have not resolved the issue. The vehicle has surged forward unexpectedly, creating near-miss accident situations. I no longer feel the vehicle is safe to operate.”

NHTSA complaint #11714281, filed 2026-01

Related service bulletins

Vehicle speed control: other model years

YearComplaintsShare of year
2017212%

Other parts of the 2017 Cadillac CT6

Transmission and drivetrain
10 complaints
Electrical system
4 complaints
Brakes
2 complaints
Engine
1 complaints
Forward collision avoidance
1 complaints
Fuel system
1 complaints
Other or unknown
1 complaints
Steering
1 complaints
Body and structure
1 complaints
Suspension
1 complaints
Tires
1 complaints
Visibility (wipers, defrost, mirrors)
1 complaints

← All problems reported for the 2017 Cadillac CT6

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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