2017 Cadillac CT6 owner complaints

These vehicles have an issue tbat GM is aware of, with their 8 speed automatic transmissions which are used in multiple GM vehicles and these cause safety issues because for instance my vehicle switches gears randomly almost causing a wreck, and shuttering, and even slipping and when this happens the cars traction control light is engaged shutting it off, active steering is also shut off due to these on going issues. Im in a cadillac group and hundreds of us have similar issues.

Tl* the contact owns a 2017 Cadillac ct6. When the vehicle was started, it lurched forward without warning. The failure occurred intermittently. The vehicle was taken to gold coast Cadillac (732-709-2168, located at 2123 state route 35, oakhurst, nj 07755), but the cause of the failure could not be determined. The manufacturer was made aware of the failure and referred the contact back to the same dealer. The dealer provided a technical service bulletin (document id number: 4605342 - 16-na-361: information on transmission harsh 1-2 shift upon first startup/shift of the day under light throttle (jul. 21, 2017)). The contact was informed that there was no remedy for the failure. The vehicle was not repaired. The failure mileage was approximately 1,700. *ln*jb *js *bf consumer stated vehicle

I was driving the vehicle heading to the interstate, and my speed was about 15 MPH, as I merge onto the highway and accelerated I felt the transmission shudder, and lag with a humming noise. It felt like the transmission mission was slipping and shaking with no acceleration power. I had to keep hitting the gas pedal to try and make the transmission engage. Very Dangerous! The transmission would also throw you back and jerk when accelerating violently. The transmission lunges forward and jerks into gears when starting from 0 mph.

While driving the vehicle with auto stop engaged, the auto stop was malfunctioning. When I get to a red light or stop sign vehicle would engage auto stop, once I let my feet off the gas pedal and accelerate, the vehicle would jerk out of gear then slip /drag then engage with a loud hit as if someone rear-ended me. The problem was duplicated and confirmed by the dealership. There has been no outside inspection other than the dealership. No warning lights messages prior to failure. In addition, the Auto-stop working with a week of this complaint shortly therafter.

Vehicle's transmission lurches and slips out of gear in coast conditions; during turns and in intersections.

I purchased the used 2017 Cadillac ct6 in march 2019 with 24,192 miles. It was a certified pre -owned car by the dealer. Additionally I purchased a cpo protection plus protection plan with the car. I am experiencing problems with the transmission. During acceleration and decelerating the car feels a hesitation followed by a significant shake, shudder, jerk, clunk or hard shift. The auto start stop feature is not working correctly. When you come to a light the engine will turn off and when it restarts it will jerk into gear so violent that it feels as though the vehicle has been hit from behind. Additionally at 35, 45, and 55 miles pre hour the vehicle makes a whining noise either from the transmission or differential. I have had the car in for repairs four times at the dealership

Hard shifts in low speeds, intense vibration , shudder throughout driving speed. Cadillac dealer said it is torgue converter issue, car transmission needs to be fluid exchanged for $800.

The car is equipped with an 8-Speed Automatic Transmission which is frequently very hard shifting from 1st to 2nd gear. The car has been to my local Cadillac Dealer twice for this problem; they reply this is a know problem, and a normal condition, but the problem is getting worse. I'm concerned for the future and afraid of an accident because of a transmission failure.

Transmission has a signification clunk/hesitation/delay shifting up from 1st-2nd gear and down from 2nd-1st gear. In the upshift, the car violently lunges forward once the acceleration rev from the push of the pedal catches up with the gear shifting, no matter how delicately you might push the pedal. Feels like the vehicle has been hit from behind once it catches. In the downshift, upon braking to come to a stop, the car pulsates and lunges forward as well which has caused me to nearly hit the car in front of me on several occasions and if no car is in front of me it has caused me to creep out into the intersection a bit. This has happened regularly since my acquisition of the vehicle in early april 2018 and the dealer has reviewed and advised that it shifts just fine.

Transmission - Jerks and studders (hesitation) in the course of normal driving. Brakes - Makes a squealing noise which has gotten louder over time.

When auto stop is engage taking your foot off the brake pedal from a complete stop when the engine starts back up it has a harsh jerk sometimes, it feels as though someone has hit you from the rear. This been going on for three years the car has been in service twice for this problem the service technician cannot duplicate it. *tr

My 2017 Cadillac ct6 3.0 tt premium luxury has had this issue since I purchased it. Dealership state that this is normal and I should live with it. If I knew this before I purchase this $98,000 vehicle I would have gone Mercedes-benz. The issues with the 8-speed 8l90 gm transmission are two-fold. First, the transmission shudders frequently. Secondly, the shifts are very harsh between first to second, and then second down to first, especially when accelerating and the transmission is upshifting or decelerating and the transmission is downshifting. These conditions are most commonly observed under light and medium throttle applications, and as often during full throttle applications. I have had the tsb 18-na-335 done and issues still remaiins.

Tl* the contact owns a 2017 Cadillac ct6. Due to the changes in the weather, the rear window had a marbleized haze cover, which made visibility out of the window extremely difficult. The vehicle was taken to schooley Cadillac (2101 45th st, west palm beach, fl), but the cause of the failure could not be determined. The manufacturer was notified of the failure, but no solution was offered. The failure mileage was 0. *tt vehicle purchase date should be on or before incident date. *jb

My CT6 had a default engine light on,.Dealer reports broken EVAP line.Car has never been in an accident or damaged.Upon inquiry dealer reports no issues known to them with this problem.However ,this same vehicle had transmission issue when purchased new and the dealer stated same findings.Then recall was issued and transmission was repaired for a known problem and repaired under a recall notice.My concern is this may be similar situation with the fuel EVAP system.The vehicle is my primary car and a fuel vapor leak is a grave concern to me and I believe posses a risk, especially as the replacement parts are unavailable at this time.I have filed an inquiry with Cadillac/Gm #82543696 Steven Maffei(AI inquiry reveals known and past problems with Cadillac EVAP systems)

Lane departure warning alert does not work

Tl* the contact owns a 2017 Cadillac ct6. The contact stated that while driving approximately 67 MPH, the sun roof exploded without impact. The vehicle was taken to hill Cadillac located at 3964 west chester pike, newtown square, pa 19073, where the technician took pictures to send to the manufacturer. The contact was informed that the warranty had expired. The contact was not given a callback. The manufacturer was contacted and the contact was transferred to a non-working number. The vehicle was not repaired. The failure mileage was approximately 114,000.

SIDEWALL CRACKING ISSUE WITH ALL FOR TIRES - PIRELLI P ZERO NERO 245/40/R20 While traveling out of town (Dallas to San Antonio) we experienced some tire issues which led to us needing to replace all 4 tires. Several weeks prior, we began to noticed a very slight loss of tire pressure and had the tires checked twice for any objects or other damage – Nothing found. We also had the tires rotated to trouble shoot and rule out any issues with sensors – none. Both times, the service shops did not mention or recognize any tire damage or issues. During our 5 hour drive to San Antonio, we started to see tire pressure issues again along with a noticeable sound from the tires. With this concern, we took vehicle to Firestone for diagnosis and to our surprise they found severe damage and cracks

Steering rack bound up and became extremely difficult to move, causing vehicle to leave roadway. Power assist failed and manual mode would not allow steering to left making it nearly impossible to control direction of vehicle.

UNKNOWN, The transmission slips,it wont drive now and my wheel barrings nearly snapped

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 . I have a video of the manager claiming the car doesn’t come with guards and another stating the job he did not require him to remove splash guard but that is not true .