AI Damage2021 Cadillac XT5: common problems
Owners of the 2021 Cadillac XT5 filed 18 complaints with NHTSA, most often about electrical system and engine. The maker issued 833 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 18
- involving a crash
- 1
- Technical service bulletins (TSB)
- 833
What fails most often
- 1 Electrical system 44% of all complaints
- 2 Engine 17% of all complaints
- 3 Engine and cooling 11% of all complaints
- 4 Backover prevention 11% of all complaints
- 5 Powertrain 6% of all complaints
- 6 Service brakes 6% of all complaints
- 7 Fuel system 6% of all complaints
- 8 Steering 6% of all complaints
- Electrical system: 8 complaints (44% of all), 1 of them with a crash reported by the owner; manufacturer bulletins for this component: 200.
- Engine: 3 complaints (17% of all); manufacturer bulletins for this component: 83.
- Engine and cooling: 2 complaints (11% of all); manufacturer bulletins for this component: 138.
- Backover prevention: 2 complaints (11% of all); manufacturer bulletins for this component: 36.
- Powertrain: 1 complaints (6% of all); manufacturer bulletins for this component: 99.
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
- 3.6 L · petrol · 6 cylnamed in 1 complaints
- automatic, 9-speed
Drive: FWD, AWD
Symptoms owners describe
How many of the 18 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) |
|---|---|---|---|
| Electrical system | 8 | 1 | 200 |
| Engine | 3 | 0 | 83 |
| Engine and cooling | 2 | 0 | 138 |
| Backover prevention | 2 | 0 | 36 |
| Powertrain | 1 | 0 | 99 |
| Service brakes | 1 | 0 | 32 |
| Fuel system | 1 | 0 | 28 |
| Steering | 1 | 0 | 19 |
| Fuel/propulsion system | 1 | 0 | 18 |
| Forward collision avoidance | 1 | 1 | 10 |
| Air bags | 1 | 0 | 9 |
| Lane departure | 1 | 0 | 3 |
| Equipment | 0 | 0 | 215 |
| Structure | 0 | 0 | 36 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The air bag did not deploy and all electrical safety features failed to operate after the collision. There were no injuries reported and a police report was filed. The radiator began to leak as a result of the accident, therefore, the vehicle was towed to an independent body shop.
Sudden Engine Shutdown and Loss of Steering Assistance in Traffic — 2021 Cadillac XT5 While operating our 2021 Cadillac XT5 in traffic, the vehicle suddenly and unexpectedly stopped running. The engine shut down, the instrument panel went dark except for a warning stating "Low Battery," and steering locked up.
The Side Detection System warning light came on. I found that other vehicles in our blind spots were not be recognized by the system. The warning lights were not being activated on the side mirrors. The system was repaired at the dealership at a cost of $865.43.
The contact stated that while an oil change was being completed, an oil leak was discovered. No warning light was illuminated. The dealer diagnosed the vehicle and determined that the head gasket needed to be replaced. The vehicle was repaired; however, the failure recurred.
Requires very firm pedal pressure to hold car in place; if brake pressure is eased, vehicle surges forward until it finally settles after several seconds. Concern is intermittent but repeatable. I had a near collision on 10/3/2025 due to this issue.
Fuel pump module failed twice. There was no warning lamps, messages or other symptoms prior to the failure. The first time I was driving the second time the car was parked and did not start. See below for details. Safety: Thankfully i was not driving 70+MPH down a busy highway when the car shut down.
The contact stated that while stopped at a traffic signal, the signal turned green; however, when the accelerator pedal was depressed, the vehicle hesitated before responding as needed. The contact stated that the vehicle lunged into motion.
The contact stated the back over prevention warning light illuminated. The contact stated that there were no obstacles behind the vehicle. The vehicle was taken to the dealer, but the failure could not be duplicated.
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 1,291 of 2,102 model years in the NHTSA data (among the 39% least complained about).
On average one model year of the XT5 has 28 complaints (11 years in the data). This year has 18, below average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Backover prevention. Rear camera and parking sensors after a rear impact.
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
- This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
- PI to help diagnose A/C concern
- This Preliminary information communicates that a vehicle may be encountered with the heated/ventilated…
This Preliminary information communicates that a vehicle may be encountered with the heated/ventilated seats inoperative. Upon further inspection it will be found that the F19DA fuse will be open. The technician is…
- This Preliminary information communicates an issue with an OTA pending message still displayed after an…
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
- Pi created to provide GM dealers with information on gathering information for projection issue
- This preliminary information communicates information about how to determine if a wheel and tires size…
- Improvements to OnStar functionality
- 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
- Improvements to OnStar functionality
During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
NHTSA lists 833 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2021 Cadillac XT5?
Owner complaints to NHTSA most often mention: electrical system, engine, engine and cooling. Total complaints: 18. The most frequent symptoms in complaint texts: warning lights, check engine (33%), driver assists: adaptive cruise, lane keeping (11%), battery drain (11%).
How many service bulletins (TSB) were issued for the 2021 Cadillac XT5?
NHTSA lists 833 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 2021 Cadillac XT5 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 2021 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.