2020 CHEVROLET SUBURBAN Problems & Recalls

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...

Mileage: 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 dea...

The contact owns a 2020 Chevrolet Suburban. The contact stated while driving 25 MPH and depressing the accelerator pedal, the vehicle started shuddering. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the e...

Mileage: 95,000

Our engine went at 100,800 miles, costing us $15k in June 2025. Then our transmission went 3 months later, now costing us another $7k. GM is offering very little financial assistance. It's quite inconvenient that these major mechanical issues occur right after factory warranty. It is at a dealer get...

Our engine went at 100,800 miles, costing us $15k in June 2025. Then our transmission went 3 months later, now costing us another $7k. GM is offering very little financial assistance. It's quite inconvenient that these major mechanical issues occur right after factory warranty. It is at a dealer get...

The transmission is not shifting appropriately from 2nd to 3rd 3rd to 4th. There is a huge whining noise when it reaches the end before shifts. There is known issues in the 2020 suburban and this vehicle was never recalled for similar issues.

Driving through residential area and noticed loud noise from under hood. Went to pull out onto state highway and wasn’t able to get up to speed almost causing an accident because I could not accelerate. Had to maintain speed at or below 40mph. Brought vehicle to dealership and they confirmed that ...

SEVERE TRANSMISSION SHUDDER. LAST MONTH HAD TAKEN MY 2020 CHEVROLET SUBURBAN TO THE WEST CHEVROLET DEALER LOCATED IN ALCOA, TENNESSEE. I WAS ADVISED BY A TECH THAT THE VEHICLE NEEDED A NEW TORQUE CONVERTER. I PAID 2,200.00 FOR THIS REPAIR. THIS REPAIRS DID NOT FIX THE ISSUE. AFTER PAYING MY BILL AN...

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 regist...

Mileage: 252,000

The vehicle is stuttering, intermittent, jumping, miss firing during acceleration, and hard down shifting. The check engine and forward collision unavailable light flashed as the vehicle struggled to accelerate. According to Chevrolet the camshaft and two lifter has failed.

The vehicle is stuttering, intermittent, jumping, miss firing during acceleration, and hard down shifting. The check engine and forward collision unavailable light flashed as the vehicle struggled to accelerate. According to Chevrolet the camshaft and two lifter has failed.

Had to replace motor. Had to replace the vibrater in the seat. Had to replace transmission. Electric shorted

Had to replace motor. Had to replace the vibrater in the seat. Had to replace transmission. Electric shorted

Had to replace motor. Had to replace the vibrater in the seat. Had to replace transmission. Electric shorted

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 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 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 technical service bulletin for the Service Safety Restraint System is for models 2021-2023. I have a 2020 Service Safety Restraint System error code this is appearing intermittently. Turning off and on. It's almost like a short somewhere. We are taking it in for servicing but I feel that the...

Complete engine failure. Entire engine needed to be replaced. Only 5 cylinders were working causing the vehicle to shake and shudder violently

Out of the blue, while driving, my car started lurching and making a weird rattling noise. I was able to make it to a mechanic, where I learned the cylinder lifters collapsed and crankshaft were broken. The mechanic told me this is a common defect for GM motors. My vehicle is only five years old, so...

Out of the blue, while driving, my car started lurching and making a weird rattling noise. I was able to make it to a mechanic, where I learned the cylinder lifters collapsed and crankshaft were broken. The mechanic told me this is a common defect for GM motors. My vehicle is only five years old, so...

Driving on the highway and I started to slow down even while pressing the accelerator. Pulled over and turned the car off and then back on. I was able to almost get to an exit but then it completely stopped moving. Turned it off and on again but car would not move. Not a single light turned on until...

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.

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.

The contact owns a 2020 Chevrolet Suburban. The contact stated while driving 10 MPH and depressing the accelerator pedal, the vehicle failed to respond as needed. No warning lights were illuminated. The contact pulled over and turned off and restarted the vehicle however, the failure persisted. The ...

Mileage: 93,000

On October 27, coming back from a family trip at 10 PM at night on a major highway, the suburban all of a sudden quit. Traveling at 70 miles per hour, all of a sudden, when pressing the gas pedal, the car would not accelerate and the RPM gauge was erratically moving. The car started to slow down til...

On October 27, coming back from a family trip at 10 PM at night on a major highway, the suburban all of a sudden quit. Traveling at 70 miles per hour, all of a sudden, when pressing the gas pedal, the car would not accelerate and the RPM gauge was erratically moving. The car started to slow down til...

On October 27, coming back from a family trip at 10 PM at night on a major highway, the suburban all of a sudden quit. Traveling at 70 miles per hour, all of a sudden, when pressing the gas pedal, the car would not accelerate and the RPM gauge was erratically moving. The car started to slow down til...

The contact owns a 2020 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the steering wheel became firm. There was no warning light illuminated. The contact stated that the steering wheel returned to normal operation upon depression of the brake pedal. A week later ...

Mileage: 55,000

I put vehicle in Chevy dealership 7/8/24 for cold start knocking sound. Dealers called 2 days later said it was defective lifter issue on the 6.2 liter GM engine.Dealer ordered new engine.on 8/23/24 while test driving vehicle with new engine in it while driving on the highway a fire started under th...

Engine making ticking on passenger side when first started in the morning. Service bulletin is out but dealers are not doing a recall. Engine can fail while driving from this if it gets worse. GM admitted problem in Service Bulletin No 19-na-218 lifter and push rod failure is the problem.

Fuel injector failed and pumped too much gas into cylinder causing gas to get into engine oil and ruin engine. GM claims they are building the replacement engine, but won't give any estimate of when it will be fixed. Other dealers that are receiving these engines will not sell the engine to my deale...

Fuel injector failed and pumped too much gas into cylinder causing gas to get into engine oil and ruin engine. GM claims they are building the replacement engine, but won't give any estimate of when it will be fixed. Other dealers that are receiving these engines will not sell the engine to my deale...

I had to replace my rear differential due to grinding and metal shavings in the rear end. Recently had to take my truck in for repairs due to the motor mounts breaking. Discovered the front differential is also damaged with metal shavings due to grinding. The auto shop reached out to the local Chevy...

When putting vehicle in reverse, the screen for the rear camera will go to full intensity brightness. There is no adjustment for this, as the dashboard lights do not control the screen brightness. It is impossible to see out of the Sideview mirrors with the windows up due to the reflection off of th...

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 b...

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 b...

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 b...

The water pump burst without any warning.

Total Brake failure without warning, DTC, or messages. Coming out of a parking lot applied the brakes and the brake pedal went to the floor and was not able to stop. I tried pumping the brakes which pedal to return to the correct position but went back down to the floor. Had the vehicle towed to the...

The contact owns a 2020 Chevrolet Suburban. The contact stated that while operating the vehicle a banging noise was present coming from the engine compartment. Additionally, while driving, the cluster gauges and the air conditioning malfunctioned. The vehicle was later examined by an independent mec...

Mileage: 30,000

Have had starter problems since we purchased the vehicle. Starter intermittently loudly grinds when pressed 2-3 times a week and won’t start. Dealership could repeat problem once, but never fixed it. Took vehicle in at least half a dozen times. Never fixed. Car also makes an odd humming when gas i...

Have had starter problems since we purchased the vehicle. Starter intermittently loudly grinds when pressed 2-3 times a week and won’t start. Dealership could repeat problem once, but never fixed it. Took vehicle in at least half a dozen times. Never fixed. Car also makes an odd humming when gas i...

While turning at driving speed I feel as if I loose control of the steering for a split second. The front wheels feel like they begin to turn without me turning the steering wheel. This has happened at least a dozen times in the 6000 miles I have put on the car. It is extremely dangerous especially...

TL* THE CONTACT OWNS A 2020 CHEVROLET SUBURBAN. THE VEHICLE WAS PREVIOUSLY MODIFIED WITH HUTCHINSON WHEELS. THE CONTACT STATED WHILE DRIVING AT A SLOW SPEED, THE FRONT DRIVER'S SIDE WHEEL DETACHED WITHOUT WARNING. THE VEHICLE WAS TOWED TO AN UNDISCLOSED LOCATION. THE LOCAL DEALER WAS NOT CONTACTED. ...

Mileage: 500

WHEN ADAPTIVE CRUISE IS ENGAGED, THE SYSTEM HESITATES WHEN LEAD VEHICLES SLOWS AT A SLOW RATE (NO BRAKE LIGHTS OBSERVED ON LEAD VEHICLE), REQUIRING OPERATOR TO APPLY BRAKES. WHEN ADAPTIVE CRUISE CONTROL IS ENGAGED DURING HIGHWAY DRIVING, INTERMITTENTLY, MEDIUM SLOWING OF LEAD VEHICLE (BRAKES APP...

Mileage: 200

INTERMITTENTLY, WHILE ACCELERATING, A JOLT IS FELT EMANATING FROM THE RIGHT HAD SIDE, POSSIBLY TOWARD THE FRONT OF THE VEHICLE, WHEN THE AUTO FEATURE OF THE 4 WHEEL DRIVE IS ENGAGED. THIS OCCURS AT SPEEDS OVER 50. WHAT IS DESCRIBED IS AN ONGOING PROBLEM, SINCE THE VEHICLE HAS BEEN PURCHASED. NO...

Mileage: 200

INTERMITTENTLY, WHILE ACCELERATING, A JOLT IS FELT EMANATING FROM THE RIGHT HAD SIDE, POSSIBLY TOWARD THE FRONT OF THE VEHICLE, WHEN THE AUTO FEATURE OF THE 4 WHEEL DRIVE IS ENGAGED. THIS OCCURS AT SPEEDS OVER 50. WHAT IS DESCRIBED IS AN ONGOING PROBLEM, SINCE THE VEHICLE HAS BEEN PURCHASED. NO...

Mileage: 200

INTERMITTENTLY, WHILE ACCELERATING, A JOLT IS FELT EMANATING FROM THE RIGHT HAD SIDE, POSSIBLY TOWARD THE FRONT OF THE VEHICLE, WHEN THE AUTO FEATURE OF THE 4 WHEEL DRIVE IS ENGAGED. THIS OCCURS AT SPEEDS OVER 50. WHAT IS DESCRIBED IS AN ONGOING PROBLEM, SINCE THE VEHICLE HAS BEEN PURCHASED. NO...

Mileage: 200

2020 CHEVY SUBURBAN LESS THAN 5,000 MILES ON MICHELIN ENERGY SAVER A/S 265/65R18--APPEARS A BULGE CAUSED A TRIANGLE SIZE CRACK EXPOSING SIDEWALL. THE VEHICLE HAS NEVER TOWED, OR BEEN OFF ROAD AND IS STORED IN GARAGE

Mileage: 5,000

NONE OF THE AIRBAGS DID NOT DEPLOY DURING AN ACCIDENT. VEHICLE WAS MOVING FORWARD AND HIT ON THE DRIVERS SIDE FRONT QUARTER BY ANOTHER VEHICLE DOING APPROXIMATELY 45MPH. MY SUBURBAN WAS TURNING LEFT ONTO A HIGHWAY.

Mileage: 1,500

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 TI...

Mileage: 775

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 TI...

Mileage: 775

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 TI...

Mileage: 775