In 2025, one if the pistons misfired. It was repaired and the same issue occurred a year later causing the cam shaft to break as well. Not to mention we had an electrical failure where the dashboard didn’t work and the water pump failed right after it was in for the first piston misfiring. It was repaired at Ciocca Chevrolet in [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The worst 2020 Chevrolet Suburban problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine18
- Transmission10
- Electrical8
- Steering4
- Acceleration3
- Brakes3
- Driver assistance3
- Fuel system3
- Airbags2
- Suspension2
- Seats1
- Tires1
- Visibility1
- Wheels1
Specific symptoms reported on the 2020 Chevrolet Suburban
Recalls 4
Power train: transfer case (4-wheel drive)
- What is wrong
- General Motors, LLC (GM) is recalling certain 2026 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, and GMC Sierra 1500, Yukon, and Yukon XL vehicles with four-wheel (4WD) or all-wheel drive (AWD), and certain 2015-2020 Suburban, Escalade, Escalade ESV, Yukon, Yukon XL, and Tahoe vehicles. A component missing from the drivetrain transfer case may cause the front and/or rear wheels to lock up without warning to the driver.
- Risk
- Front or rear wheel lockup increases the risk of a crash.
- Remedy
- Owners are advised not to drive their vehicle until the remedy is completed. Dealers will inspect and, if necessary, replace the transfer case assembly, free of charge. Owner notification letters were mailed May 18, 2026. Owners may contact GMC customer service at 1‑800‑462‑8782, Chevrolet customer service at 1‑800‑222‑1020 or Cadillac customer service at 1‑800‑333‑4223. GM's number for this recall is N262557620. Vehicle Identification Numbers (VINs) involved in this recall became searchable on on May 7, 2026.
Recall number 26V289000 · Recall details
Tires
- What is wrong
- General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, Traverse, GMC Yukon, Yukon XL, 2018-2021 Chevrolet Express, GMC Savana, 2019-2020 Chevrolet Blazer, Silverado 1500, GMC Acadia, Sierra 1500, and certain Continental tires sold to the aftermarket for various model year 2018-2021 vehicles. The affected tires were cured for too long during production.
- Risk
- Over cured tires may develop a break in the sidewall resulting in sudden air loss or a belt edge separation which could lead to a tread/belt loss. Either condition can cause a loss of vehicle control, increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will inspect the tires, replacing them as necessary, free of charge. The recall began March 22, 2021. Owners may contact GMC customer service at 1‑888‑988‑7267, Buick customer service at 1‑866‑608‑8080, Chevrolet customer service at 1‑800‑222‑1020 or Cadillac customer service at 1‑800‑458‑8006. GM's number for this recall is N212329050.
Recall number 21V115000 · Recall details
Fuel system, gasoline: delivery: fuel pump
- What is wrong
- General Motors LLC (GM) is recalling certain 2020 Cadillac Escalade, Escalade ESV, Chevrolet Camaro, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The fuel pump may be missing a pressure regulator, allowing for over-pressurization of the fuel system.
- Risk
- Over-pressurization can crack the fuel pump and cause leaks, increasing the risk of a fire in the presence of an ignition source.
- Remedy
- GM will notify owners, and dealers will replace the fuel pump, free of charge. The recall began December 18, 2019. Owners may contact Cadillac customer service at 1‑800‑333‑4223, Chevrolet customer service at 1‑800‑222‑1020, or GMC customer service at 1‑888‑988‑7267. GM's number for this recall is N192283991.
Recall number 19V837000 · Recall details
Electronic stability control (ESC)
- What is wrong
- General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a 3.08-ratio rear axle and four-wheel drive. If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in four-wheel or automatic mode, the Electronic-Brake Control Module (EBCM) software may activate the driveline-protection system.
- Risk
- Unintended activation of the driveline-protection system will cause unintended braking on the wheel on the opposite side of the failed sensor, causing the vehicle to pull to one side unexpectedly, increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began December 11, 2019. Owners may contact Chevrolet customer service at 1‑800‑630‑2438 or GMC customer service at 1‑800‑462‑8782. GM's number for this recall is N192261050.
Recall number 19V761000 · Recall details
Technical service bulletins for the 2020 Chevrolet Suburban 845
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This service bulletin provides information about GM Accessories
- Unknown or other
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- Unknown or other
- This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
- PI to help diagnose A/C concern
- Unknown or other
- Unknown or other
- Unknown or other
- Unknown or other
2020 Chevrolet Suburban fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 5.3L 8‑cyl | RWD | 15 | 22 | 18 |
| 6.2L 8‑cyl | RWD | 14 | 23 | 17 |
| 5.3L 8‑cyl | 4WD | 14 | 21 | 16 |
| 6.2L 8‑cyl | 4WD | 14 | 20 | 16 |
What 2020 Chevrolet Suburban owners say
Most recent owner complaints, unedited.
Engine had a catastrophic failure and completely shut off while driving down the highway. The engine has completely seized and requires replacement. The vehicle was towed to an independent service shop and the technician diagnosed that the engine needed to be replaced.
There is a safety recall on GM’s 6.2L V8 L87 engine model years 2021-2024. My vehicle is a 2020 Suburban with a 6.2L V8 L87 engine. My engine recently experienced the same failure as cited in the recall, but because it is outside the 2021-2024 window it is not covered by this recall. I ask that the recall be expanded to additional years where these engines are experiencing the same failure as is covered by the current recall.
Transmission fail Drives fine then stops accelerating
I just received an email with this the following: the federal safety agency Recall ID Number :26V289, warning about front or rear wheel lockup. Per the NTHSA website, there is no recall. The email came from: the federal safety [email protected]
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.
Driving on interstate and gradual onset of clicking/knocking. Within 5 minutes complete loss of propulsion and throttle. RPM went to zero. Oil pressure/temperature/engine lights all fine. Dealership states "catastrophic engine failure." My family was in the vehicle. Fortunately still had power steering and brakes and able to guide vehicle to shoulder.
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.
I hadn’t had my car a year and my solenoid in my transmission is in need of replacement. The suv will not pick up speed above 40
Transmission is not functioning properly at 74,300 miles. Engine kept slipping while driving uphill and the RPMs were not matching vehicle speed. Could not go above 50mph while merging onto freeway which was very dangerous. Whirring noise occurred every time I accelerated which was also noted By dealer and transmission shop. No check engine lights on. Took to dealer, but the misdiagnosed it since no lights were on. Took to Transmission shop, and they found that the transmission had several issues that were not displayed. Besides the shop running specific tests, there are still no warning lamps or messages displayed on the vehicle dashboard or using an OBD2 sensor.
Compare the 2020 Chevrolet Suburban
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Other model years
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Questions about the 2020 Chevrolet Suburban
Is the 2020 Chevrolet Suburban reliable?
Owners have filed 44 complaints about the 2020 Chevrolet Suburban, fewer than a typical Suburban model year.
What is the 2020 Chevrolet Suburban year score?
The 2020 Chevrolet Suburban scores 88 out of 100 (good). The score compares it with the other model years of the Chevrolet Suburban: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2020 Chevrolet Suburban?
Engine and cooling, with 18 complaints. Next is transmission (10).
How many recalls does the 2020 Chevrolet Suburban have?
4 recalls, covering power train, tires and fuel system, gasoline.
What year does the Chevrolet Suburban have bad engine?
The Chevrolet Suburban model years with the most engine complaints are 2021 (102 complaints), 2023 (77 complaints) and 2022 (69 complaints).
What gas mileage does the 2020 Chevrolet Suburban get?
Official estimates for the 2020 Chevrolet Suburban range from 16 to 18 mpg combined. The most efficient version (5.3L 8-cyl, RWD) gets 15 city and 22 highway.
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