AI Damage2019 Cadillac XT4: common problems
Owners of the 2019 Cadillac XT4 filed 22 complaints with NHTSA, most often about engine and powertrain. The maker issued 651 service bulletins for this year. We found 2 repair videos on YouTube. Details by component below, with sources.
Key figures
- Owner complaints
- 22
- involving a crash
- 1
- Technical service bulletins (TSB)
- 651
- YouTube repair videos
- 2
What fails most often
- 1 Engine 55% of all complaints
- 2 Powertrain 27% of all complaints
- 3 Electrical system 18% of all complaints
- 4 Exterior lighting 18% of all complaints
- 5 Fuel/propulsion system 14% of all complaints
- 6 Service brakes 5% of all complaints
- 7 Suspension 5% of all complaints
- 8 Vehicle speed control 5% of all complaints
- Engine: 12 complaints (55% of all); manufacturer bulletins for this component: 67.
- Powertrain: 6 complaints (27% of all); manufacturer bulletins for this component: 73.
- Electrical system: 4 complaints (18% of all); manufacturer bulletins for this component: 134.
- Exterior lighting: 4 complaints (18% of all); manufacturer bulletins for this component: 15.
- Fuel/propulsion system: 3 complaints (14% of all); manufacturer bulletins for this component: 4.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 2 L · petrol · turbo · 4 cyl
- automatic, 9-speed
Drive: FWD, AWD
Symptoms owners describe
How many of the 22 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 12 | 0 | 67 |
| Powertrain | 6 | 0 | 73 |
| Electrical system | 4 | 0 | 134 |
| Exterior lighting | 4 | 0 | 15 |
| Fuel/propulsion system | 3 | 0 | 4 |
| Service brakes | 1 | 0 | 18 |
| Suspension | 1 | 0 | 14 |
| Vehicle speed control | 1 | 0 | 1 |
| Equipment | 0 | 0 | 209 |
| Engine and cooling | 0 | 0 | 98 |
| Wheels | 0 | 0 | 37 |
| Structure | 0 | 0 | 33 |
| Fuel system | 0 | 0 | 24 |
| Tires | 0 | 0 | 20 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
ie: brakes, propulsion, headlights, air bags, etc etc etc...Cadillac dealer who fixed the issue said that it is a common problem and not warranted and my car has no warranty anyway.
The check engine light was on, the car was behaving abnormally as well as making unusual concerning noises. The dealership sent me away saying no codes showed up and they couldn’t find a problem.The light would come on and off sporadically. I took screen shots of my dashboard every time the light came on.
I took my car is for service at the Cadillac dealership and they stated there was an oil leak from the camshaft carrier. When I asked more questions they stated it was a fairly common problem with the XT4 and a few other models where there was a faulty seal at the "T-joint" (cam carrier T-joint).
No warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic to be diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 75,000.
Both running light modules failed due to overheating because there was no heatsink thermal compound installed on either unit. They had to be replaced. Repair was successful.
Had a check engine light occur after a dealer warranty installed engine. The dtc code was "po496". This turned out to be a parge pump failure. Vehicle is 4 years and 9 months old, milage at 34285. Dealer saying that part is not covered any longer under warranties of any type. The repair cost me $671.89.
In September, my vehicle would not start. I had it boosted and it started right up. The very same afternoon , it would not start and had it boosted. Drove it for 2 days without issue and on day 3 it would not start and boosting was unsuccessful. The vehicle could not be put in neutral and needed to be towed.
Toward the end of October 2024, my truck's check engine light came on. I took the vehicle to the dealership to have the oil changed. Two days later, the engine said, "Engine power reduced," so I took it to a repair shop, and they diagnosed the timing chain.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 1,212 of 2,102 model years in the NHTSA data (among the 42% least complained about).
On average one model year of the XT4 has 11 complaints (9 years in the data). This year has 22, above average.
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it
- This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance
- PI to help diagnose A/C concern
- This preliminary information communicates information about how to determine if a wheel and tires size…
- This preliminary information discusses a condition that may arise from the drivers window switch sending…
This preliminary information discusses a condition that may arise from the drivers window switch sending an errant message causing the vehicle to enter manual fob learn mode.
- This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a…
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
- This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic…
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
- This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase…
This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
- This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic…
- This service bulletin provides information on Tire Sidewall Irregularities
- This service bulletin provides information on replacing the intake manifold when the engine is replaced…
This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- This Preliminary Information communication provides information to the technician about vehicles that have…
This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions…
NHTSA lists 651 bulletins for this year; the 12 newest are shown here.
Repair videos
We do not copy videos: these are YouTube links credited to their authors. Amounts are as stated by the author and not verified by us.
Other years of this model
Questions and answers
What are the most common problems with the 2019 Cadillac XT4?
Owner complaints to NHTSA most often mention: engine, powertrain, electrical system. Total complaints: 22. The most frequent symptoms in complaint texts: warning lights, check engine (23%), oil leak or consumption (14%), overheating, coolant loss (14%).
How many service bulletins (TSB) were issued for the 2019 Cadillac XT4?
NHTSA lists 651 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2019 Cadillac XT4 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2019 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.