ElectricalEngine
Filed Mar 9, 2026
The contact owns a 2020 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate as intended while depressing the accelerator pedal, and the vehicle stalled. A passerby helped the contact to push the vehicle into a parking lot. There was no warning light illuminated. The contact left the vehicle in the parking lot. The following day, the vehicle restarted as intended. The contact stated that on a separate occasion, the vehicle failed to start. The Push to Start button occasionally became stuck, and the contact continuously pressed the button to release it. The vehicle was towed to the dealer, but no cause for the failure was found. The vehicle was taken back to the residence, and upon exiting the vehicle, the contact noticed loose cables. The contact's husband plugged the cables back into place. The failure persisted, and the vehicle remained at the residence unrepaired. The contact had not driven the vehicle due to safety concerns. The manufacturer was not made aware of the failure. The failure mileage was approximately 90,000.
- NHTSA ID
- 11723053
- Incident
- Nov 17, 2025
- Mileage
- 90,000 mi
Electrical
Filed Jan 7, 2026
The contact owns a 2020 Chevrolet Suburban. The contact stated that the vehicle experienced electrical failures that caused several safety and powered components to turn off and on. The contact stated that the vehicle occasionally lost power steering or windshield wiper functionality and would start functioning without having been engaged manually. The contact stated that the instrument cluster occasionally went black. The contact took the vehicle to a local dealer, who diagnosed the vehicle and advised the contact of Technical Service Bulletin: 18-NA-161, which addressed the electrical failure. The vehicle was repaired. The manufacturer was not informed of the failure. The contact stated that the electrical failure described in TSB: 18-NA-161 should have been a national recall due to the safety factors of the systems affected. The failure mileage was approximately 85,000.
- NHTSA ID
- 11709472
- Incident
- Dec 8, 2025
- Mileage
- 85,000 mi
Electrical
Filed Aug 18, 2025
Odometer Fraud. The contact purchased a 2020 Chevrolet Suburban. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 88,000 and at the time of registration, it was discovered that the mileage was 252,000.
- NHTSA ID
- 11681266
- Incident
- Aug 18, 2025
- Mileage
- 252,000 mi
ElectricalEngineInterior & seats
Filed Jun 29, 2025
Had to replace motor. Had to replace the vibrater in the seat. Had to replace transmission. Electric shorted
- NHTSA ID
- 11670111
- Incident
- Jun 19, 2024
ElectricalEngineSuspension
Filed Jun 22, 2025
The vehicle has 70,000 miles. The engine has failed and been replaced two times. We are on the third engine. The first time was in 2021 the second time was in 2024. I heard that others are having a similar issue. This is a 2020 .6.2L RST. The engine failed the first time while driving at high speed the car just stopped working. The second time we heard it failing and were able to drive it to the dealer where the engine fell apart in the parking lot The vehicle has had other issues too. Currently the wire harness has failed. This has happened several times but the dealer has not figured out a repair. Each time it’s failed while driving causing power steering to fail while driving. I don’t not trust my teen drivers around the vehicle or to drive.
- NHTSA ID
- 11668498
- Incident
- Jul 15, 2021
ElectricalEngine
Filed Mar 3, 2025
engine replacement at 120,000 miles. I was told by Mechanic that the 2020 Suburban's have a problem with the fuel injector wiring harness dry rotting and the sensor changing the engine from V8 to V6 when on highway going bad causing misfire in engine and ruining the engine.
- NHTSA ID
- 11645902
- Incident
- Jan 15, 2025
BrakesElectricalSteering
Filed May 15, 2023
My car shut off two times while driving. When you google the issue, it auto populates meaning that this is a very common issue with GM. It starts back to 2015 searches as well. GM needs to recall their suburbans for their cars turning off while driving which caused me to lose power steering, power brakes and anything that requires electrical.
- NHTSA ID
- 11522047
- Incident
- May 2, 2023
Driver assistanceElectricalSteering
Filed Feb 6, 2020
2020 CHEVROLET SUBURBAN. UPON VEHICLE START: STEERING ASSIST, TRAILER BRAKE SYSTEM, STABILITY TRACK ALL INOP. TACHOMETER AND SPEEDOMETER INOP. NO REVERSE GEAR. WHEN IN DRIVE, ONLY FIRST GEAR OBTAINABLE AND MANUAL SHIFT MODE INOP. SEAT HEAT INOP. TURNED OFF AND RESTARTED APPROX FIVE TIMES AND ISSUES REMAINED. UPON SIXTH RESTART ISSUES NO LONGER PRESENT. DROVE 15 MILES HOME. VEHICLE SAT 2 HOURS, THEN RESTARTED AND OPERATED NORMALLY FOR 1/2 HOUR OPERATION, THEN TURNED OFF. VEHICLE OPERATED NORMALLY TWICE WITHIN TWO HOUR PERIOD. PARKED OVERNIGHT, AND IN A.M. REMOTE STARTED SUBURBAN AND ISSUES PRESENT AGAIN. TURNING OFFF AND RESTARTING APPROXIMATELY 10 TIMES DID NOT RESOLVE ISSUE. TURNING IGNITION OFF AND THEN TURNING TO 'ON'( BUT NOT STARTING ) SHOWS WARNINGS AS WELL. ATTEMPTED 10 TIMES TO "RUN" POSITION WITH NO CHANGE. AFTER SITTING FOR 15 MIN, VEHICLE STARTED NORMALLY AND DROVE TO DEALERSHIP. 816 MILES TOTAL ON VEHICLE.
- NHTSA ID
- 11307573
- Incident
- Feb 6, 2020
- Mileage
- 775 mi
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.