2017 Chevrolet Suburban Powertrain (other) Problems

The contact owns a 2017 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the transmission overheating warning light illuminated. The vehicle was driven to the shoulder of the road and waited for the engine to cool down. The contact stated that the failure reoccurred. The failure reoccurred every 15–20 miles while driving. In addition, the contact stated that eventually the vehicle stopped driving forward. The vehicle was towed to the dealer where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was repaired. The failure reoccurred almost two years later. The vehicle was towed back to the dealer where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the dealer where it was diagnosed with transmission failure. The contact was informed that an unknown part was not replaced during the transmission repair. The contact was informed that the transmission needed to be replaced. The vehicle was repaired. In addition, the contact stated that the dealer was the dealer who completed all three of the repairs. The manufacturer was made aware of the failure but provided no assistance. The contact was informed that the failure was not due to a manufacturing defect. The failure mileage was approximately 84,478.

NHTSA ID

11756021

Incident

Sep 3, 2024

Mileage

84,478 mi

The contact owns a 2017 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the vehicle suddenly came to a complete stop. There was no warning light illuminated. The contact attempted to accelerate, and the vehicle drove sluggishly as if the tires were flat. The vehicle was taken to the dealer where it was diagnosed with transmission failure. The contact was informed that the transmission and motor mounts needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 125,000.

NHTSA ID

11744890

Incident

Jun 14, 2026

Mileage

125,000 mi

I am writing to formally report a critical safety defect in the vehicle’s transmission system. While driving, the vehicle began experiencing severe vibrations, accompanied by an abnormal increase in engine RPMs, while the vehicle failed to accelerate appropriately. The vehicle became unresponsive, limiting my speed to 15-20 mph. This forced me to make frequent stops every 6-7 minutes to allow the transmission to cool down, as the car would not sustain normal speeds. ​This failure created an extremely dangerous situation on the highway. Due to the sudden loss of power and inability to maintain traffic flow, I was subjected to aggressive behavior from other drivers, who were honking, gesturing, and clearly endangered by my inability to accelerate. This transmission failure is a major safety hazard that renders the vehicle unreliable and dangerous to operate in any traffic condition. I am requesting an immediate investigation into this transmission defect and a permanent resolution from General Motors, as this issue poses a significant risk of causing a collision. I spoke with the owner of AAMCO, and he showed me that they have 7 of these Chevy Suburbans, GMC Yukons, and Chevy Tahoes, Escalades, and they all have the same problem, the transmission needs to be replaced, and General Motors is not notifying car owners about this problem, but it should.

NHTSA ID

11743335

Incident

Apr 21, 2026

Component or System Failure The vehicle experienced two major mechanical failures. First, the transmission failed and required full replacement shortly after the expiration of the 60,000-mile powertrain warranty. At the time of this failure, the vehicle had approximately 61,000 miles. Second, at 100,119 miles, the engine suffered a catastrophic failure that required complete engine replacement. Safety Risk The transmission failure impaired normal drivability and created a safety risk due to reduced or unreliable propulsion, which could have resulted in loss of power while driving in traffic. The engine failure rendered the vehicle inoperable and could have posed a serious safety hazard if it had occurred while the vehicle was in motion, including sudden loss of engine power. Problem Confirmation and Inspection Both failures were diagnosed and confirmed by dealership service personnel, who determined that full replacement of the transmission and later the engine was necessary. The issues were identified through inspection and standard diagnostic procedures. Warning Lamps or Symptoms There were no clear, persistent, or meaningful warning lamps, messages, or symptoms that would have reasonably alerted the driver to an impending transmission failure prior to it occurring. Any warning indicators appeared at or immediately before the failure. Similarly, there were no significant warning signs that would have predicted the engine failure prior to the need for complete replacement. Additional Information Both the transmission and engine failed at relatively low mileage for major powertrain components. The transmission failure occurred just beyond the powertrain warranty threshold, and the engine required full replacement at 100,119 miles. . These failures suggest a potential defect or durability concern affecting critical powertrain systems.

NHTSA ID

11711690

Incident

Jan 6, 2026

The contact owns a 2017 Chevrolet Suburban. The contact stated that while driving 65 MPH, the vehicle started shuddering violently, prompting the contact to discontinue driving over 60 MPH. Additionally, the contact stated that there was an abnormal clicking sound while making right or left turns. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic to be diagnosed, but the cause of the failure could not be determined. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 122,000.

NHTSA ID

11669692

Incident

Jun 27, 2025

Mileage

122,000 mi

The contact owns a 2017 Chevrolet Suburban. The contact stated that while driving at undisclosed speeds, the vehicle hesitated to upshift while the accelerator pedal was depressed, and the vehicle experienced a loss of automotive power. Additionally, the contact stated that the vehicle failed to shift into the intended gear while the gear shifter was in use. An unknown warning light was illuminated. The vehicle was towed to a local service center, where it was diagnosed and determined that there were metal shavings in the engine, and the engine needed to be replaced. The vehicle was not repaired. The transmission had been replaced prior to the failure. The manufacturer was made aware of the failure. The failure mileage was approximately 105,000.

NHTSA ID

11658880

Incident

Feb 15, 2025

Mileage

105,000 mi

Transmission failed and needed to be replaced.

NHTSA ID

11637818

Incident

Dec 27, 2024

The contact owns a 2017 Chevrolet Suburban. The contact stated that while driving approximately 10 MPH, the vehicle lost motive power. The contact stated that while depressing the accelerator pedal, the engine revved; however, the vehicle failed to respond as needed. The vehicle was restarted, shifted to neutral(N) and then drive(D) and driven for a short while before the failure reoccurred. The vehicle was taken to a family members’ residence. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 159,000.

NHTSA ID

11629053

Incident

Dec 3, 2024

Mileage

159,000 mi

6L80 transmission failure at only 82k miles. This is a known Chevrolet fail point on all vehicles equipped with this transmission yet Chevrolet does nothing to recall or repair the issue. Customer absorbs full cost of repair ($6k) and chevrolet acts like they know nothing about it. This happens on the highway at speeds and vehicles suddenly have no drive putting occupants at risk of other traffic and trying to get off the roadway where there may be no safe zone to stop.

NHTSA ID

11610785

Incident

Sep 23, 2023

The Active Fuel Management valves in cylinder 1,4,6&8 failed prematurely

NHTSA ID

11609084

Incident

Aug 5, 2024

The contact owns a 2017 Chevrolet Suburban. The contact stated that the vehicle suddenly lunged forward while driving approximately 30 - 40 MPH. The contact was able to maintain control of the vehicle. There were no warning lights illuminated. The contact was able to continue driving with no additional failures. The next day while the vehicle was idling at a stop sign, the contact attempted to accelerate however, the RPM increased but the vehicle failed to move forward. There were no warning lights illuminated. The vehicle had not been taken to the dealer. The vehicle had not been diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 150,000.

NHTSA ID

11607481

Incident

Aug 8, 2024

Mileage

150,000 mi

Transmission failed at 82,000 miles. Had to be completely rebuilt. Paid $5,486.87 out of pocket. (see receipts attached)

NHTSA ID

11589080

Incident

Mar 3, 2024

Transmission sudden failure. We were driving down the road when we suddenly lost all power to the wheels. No ability to accelerate or maintain vehicle speed, only coast with the remaining speed we had like it was in neutral. No warnings or trouble light, no noticeable symptoms ahead of time. I would press the gas pedal and the engine would Rev high like it was in neutral. I had just pulled out into the flow of traffic and the cars behind me soon had to all come to a stop because i lost accelaration and had nowhere to go with parked cars along the side of the road. Luckily we were not on a really busy road and could eventually get out of traffic. I can only imagine how bad it could have been if I was in the middle of highway traffic, or going up a snowy hill, or trying to cross a divided highway, etc. The car had to be towed to the nearest dealership and is awaiting repair. The dealer says the torque converter failed and subsequently damaged the transmission fluid pump and will require the entire transmission to be replaced and cost us over $6600. It should be available for inspection but I guess you would need to contact Blaise Alexander Chevrolet of phillipsburg pa. I don't know if anyone else has inspected it. I suspect this is a very well known issue/defect. Other mechanics I talked with instantly guessed the failure before the dealer could tell us. I have the 6 speed transmission and I see there is a class action lawsuit for the similar 8 speed failures.

NHTSA ID

11565892

Incident

Jan 13, 2024

While driving at 70 mph transmission went out. Shifted from N back to D but no response. Coasted to shoulder of interstate and stop. Shut off vehicle and restarted but vehicle would not move. Shut off again and restarted this time if went into D. Could not any faster than 35 mph. Transmission would not shift automatically. Tried manually but same results. Was able to exit interstate. Got vehicle to Chevy dealership and was told I needed a new transmission. Vehicle has 106,000 miles.

NHTSA ID

11559802

Incident

Dec 10, 2023

1 vehicle electronic panel not working properly.. transmission making loud noise and now slipping due to normal driving unsafe while at traffic light locks lock and unlock by themselves vehicle now unsafe at 5;000 miles felt strange shifting now I had to spend 1900 dollars for broken motor mounts I believe these motor mounts were already broken I bought this vehicle with 3500 miles on it I believe the motor mounts were already broken now 140;000 miles and transmission is either done or electrical issues

NHTSA ID

11544823

Incident

Sep 15, 2023

While driving on interstate 465 in Indianapolis on Tues 9/12/23 my 2017 Chevy Suburban completely lost any ability to accelerate. Fortunately I was able to coast over to the shoulder and have the vehicle towed to the closest Chevy dealership. The dealership determined it was a catastrophic failure of the transmission and recommends full transmission replacement for the vehicle to be drivable again.

NHTSA ID

11544576

Incident

Sep 12, 2023

Mileage

98,988 mi

A Chevy Suburban is a vehicle made to transport large families. You would assume these are made with true utmost safety precautions in mind to protect families. At just over 47K miles on my vehicle, our transmission went out, even though we have regular maintenance completed on our vehicle. The check engine light came on while driving on the highway. Was able to make it to a shop who verified it was the transmission. Took it to the dealer who also confirmed it is the transmission, and their 4th one on a newer Chevy Suburban to come in just today. They said they have 37 on the lot with transmission issues on newer Chevys, and some blew out while driving. We were very fortunate it did not blow out while driving, but it’s unacceptable for a family car’s transmission to go out with so little mileage. This has to be a major defect and cause for concern.

NHTSA ID

11544193

Incident

Sep 11, 2023

The contact owns a 2017 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the vehicle inadvertently jolted forward. The vehicle was able to stop while the brake pedal was depressed. No warning light was illuminated. The failure recurred while the contact was driving to the residence. The vehicle was towed to an independent mechanic, who diagnosed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and confirmed that there was no recall associated with the VIN. The failure mileage was approximately 40,000.

NHTSA ID

11538862

Incident

Aug 14, 2023

Mileage

40,000 mi

My transmission failed and I had to get a new one on my trip.

NHTSA ID

11533233

Incident

Dec 29, 2022

The contact owns a 2017 Chevrolet Suburban. The contact stated that while her husband was driving approximately 60 MPH, the speed inadvertently decelerated to 30 MPH. The contact then stated that her husband depressed the accelerator pedal; however, the vehicle failed to respond. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed and determined that the transmission failed and needed to be replaced or repaired. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 106,000.

NHTSA ID

11517505

Incident

Apr 3, 2023

Mileage

106,000 mi

Transmission went out at 5 years

NHTSA ID

11515542

Incident

Dec 29, 2022

The contact owns a 2017 Chevrolet Suburban. The contact stated while driving 5 MPH and exiting a parking lot, while depressing the accelerator pedal, the vehicle failed to properly accelerate as needed. The contact stated that the check engine warning light was illuminated. The contact was able to shift into low gear and continued driving to his residence. The vehicle became undrivable. The contact called the local dealer and made them aware of the failure. The vehicle was not diagnosed or repaired. The contact towed the vehicle to the independent mechanic, where it was diagnosed with needing the transmission to be replaced. The vehicle was repaired. The manufacturer had been informed of the failure. The failure mileage was 43,684.

NHTSA ID

11510954

Incident

Feb 2, 2023

Mileage

43,684 mi

The electrical system has gone out completely comes back a few seconds later with different icons saying to roll driver side window down then up, or stabiltrax. It has also caused complete electrical failure being on a road while driving. This has also cause my wheel to jerk taking out the power steering and the engine has shut off completely to the point where I have to wait a few minutes to even turn it on. This has happened while reversing in to a parking spot and the whole car dies. It kills power so much that I have no hazard lights. When I’m able to get it to come Back on it’s like it reset its self. I have taken it to the shop and they have said the battery cables and the mega fuse above the battery. I know this is a known issue in other like vehicles.

NHTSA ID

11506401

Incident

Jan 16, 2023

I was driving on the highway at 50 mph with my 3 kids and my vehicle stop accelerating . I almost got in a major Car accident . I had no warning lights at all . I contacted the dealership to tow Car and the transmission failed internally, I ask for Assitance since the 8 speed transmission has a class action lawsuit and Chevy denied Assitance since I have a 6 speed transmission. I believe this is a safety issue that may cause fatalities driving with children and no acceleration at 50

NHTSA ID

11498907

Incident

Dec 17, 2022

At 105000 miles the torque converter on the 6L80 transmission failed. I am having my transmission rebuilt.

NHTSA ID

11498478

Incident

Dec 16, 2022