Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2017 Cadillac XT5 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2017 Cadillac XT5. The contact stated while driving 60-65 MPH with her granddaughter seated in the rear seat, the vehicle shut off inadvertently in the middle of the road. The message battery low was displayed. The vehicle failed to restart after several attempts. The vehicle was towed from the middle of the road to the side of the road. The vehicle was then towed to an independent mechanic and was diagnosed that the electrical system had failed. An unknown repair was completed. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 72,000.
In 2021, I took my car into a GM facility to be repaired bc the A/C kept going in and out. Car was under warranty, however, GM mechanic just did a "bandaid" fix and replaced the thermostat, when there was a service bulletin put out in 2017 for this very issue. 3 years later, my car is having the exact same problem, and since car isn't under warranty, GM will not fix it, even though I have proof they didn't fix it correctly the first time. The service bulletin is titled, "17128: Service Update - Potential Loss of HVAC Control- (March 30, 2017) This issue started in October 2021 the first time, was temporarily fixed. It started again in October 2024 and is ongoing.
While driving the vehicle started to accelerate in its own. There was nothing obstructing the pedal. I could press down on brake with some resistance, but as soon as brake was released the, the vehicle accelerated. The vehicle did not level out with speed but continued to accelerate over 80 mph. This lasted about 8/9 mins, being controlled by riding on the break. It did it again for about 2/3 mins about 15 mins after first occurance. I took the car straight to get it looked at and the mechanic said that they could not find anything wrong with car
Since 6/2022 and again 7/2022, 10/25/22 1/31/23 Constantly stating service error codes for stabiltrak, antilock brakes, and brake assist not functioning and need service urgently. However when I take it to the dealership they find nothing wrong and further investigated at another Cadillac dealership they also state they found nothing. These errors continue to pop up intermittently and my Cadillac app reports them as needing service.
Steering reduced assist drive with care on the dash board . It states drive with caution not sure if this is dangerous or even driveable I am 8 months pregnant and now I don't have a car I am scared to drive it. Thermostat stopped working & fan is running and won't stop
There is an open service bulletin on my car - 17128 Potential Loss of HVAC Control. This loss of control affects the defrost on the vehicle making it very dangerous to drive when it is raining out as it severally reduces visibility.
XT5 bumper-to-bumper warranty expired on 6-1-21. Both key fobs suddenly quit working on 7-17-21. Took to dealer 7-21-21. Cost me $300. Got it back on 7-26-21. Drove vehicle for the first time after getting it back on 7-28-21. Key fob quit working again briefly then started after I kept trying for a few minutes. After driving for 5 miles, the car completely died on very busy road - no steering, no dash lights, break lights - then the car suddenly braked really hard and i almost got rear-ended. 4-way flashers wouldn't work so I had no way to warn other drivers coming up behind me. I also was a sitting duck as I couldn't exit the vehicle since the doors wouldn't unlock and windows wouldn't go down. The temperature was in the 80s and I quickly began to overheat. I tried to signal other drivers who were beeping their horns and swerving around me until several pulled over to help. …
At approximately [redacted] on [redacted] ,2024 I was at the intersection of [redacted] when my vehicle stopped running completely. All lights on the dash went out and the doors were locked which prevented me from exiting the vehicle. No systems would operate at all. All I could do was sit there. Fortunately, I had a cell phone with me. I called my local Cadillac Dealer for advice, they had very little. finally a lady there told me she would call a tow company they recommended, which she did and the tow company, Shawnee Auto Body did respond about 20-30 minutes later. In the meantime, a gentleman from a local tree company arrived on the scene and helped me, by placing an orange traffic cone behind the vehicle to keep oncoming vehicles from rearending me. …
I purchased this used car in the end of July 2025. Within the last month the service transmission light came on. Within a 24-hour period, the message changed to, "service transmission unable to shift Soon". Also alarm bells go off when I first start the car and sometimes during driving. The car feels like it drives correctly and smoothly with no shifting issues. Sometimes when that second message and check engine light icon being comes on, there seems to be a third message that is trying to pop up behind it but it does not. It seems like there is a glitch in the system. This was very concerning and scary for me. My research shows me that this has been a chronic problem for my make and model and year of car. I've also heard it can be even time to check and or change the transmission fluid. …
My 2017 XT5 completely shutdown on my on Saturday, 10/7. I was at a stop light & when I pressed the accelerator, the instrument cluster had a number of lights come on & the vehicle was very hard to accelerate. I had to pull over immediately & then the car shut down. It was completely dead: the hazard lights did not work (very scary) & OnStar and the sos button would not connect. After about 5-10 minutes, OnStar was connected & I was told not to drive the vehicle due to engine & transmission codes. The vehicle was towed the dealer by roadside. On Monday, the dealer provided me with a loaner while the diagnosed the vehicle. On 10/11, when I went to pick-up the vehicle, I was told the issue was a 'logic lock,' the car was driven for 4 miles & considered fixed. I refused the car as we need to know the root cause. The dealer still has my car and has not contacted Cadillac yet. …
Electrical complaints in other XT5 years
Frequently asked questions
How common are electrical problems on the 2017 Cadillac XT5?
NHTSA has 21 complaints about the electrical system of the 2017 Cadillac XT5, 17% of the model year's 124 complaints. The component named most often is 12v/24v/48v battery (1 mentions).
Is there a recall for 2017 Cadillac XT5 electrical problems?
No. NHTSA lists no electrical system recall for the 2017 Cadillac XT5, though it has 1 recall for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2017 Cadillac XT5 electrical problems start?
Half of the complaints with a recorded mileage happened before about 26,000 miles, and 50% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.