2015 Chevrolet Suburban: check engine light

Filed Nov 3, 2025 · Transmission · 116,816 miles · MO

The contact owns a 2015 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed and hauling a boat, the transmission unexpectedly downshifted into second gear. The contact stated that the drive mode indicator light flashed red, and the check engine warning light illuminated. The contact stated that the failure had occurred while driving downhill, and the contact pulled over to the shoulder of the roadway. 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 manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 116,816.

Filed Jul 2, 2025 · Electrical, Engine · 231,000 miles · IL

Odometer Fraud. The contact purchased a 2015 Chevrolet Suburban. The contact stated that while attempting to have the vehicle inspected, it was discovered that the catalytic converter was missing, the wires were cut, and a pipe was inserted to muffle the noise. The contact was told that the check engine warning light was turned off and the carbon monoxide was not being cleaned, and that fumes were entering the cabin of the vehicle. The contact also discovered that there was a mileage discrepancy on the vehicle. The vehicle was a dealer sale. At the time of purchase, the mileage was 131,000 and at the time of the inspection, it was discovered that the mileage was approximately 231,000.

Filed May 14, 2025 · Transmission · MI · 1 injury

The contact owns a 2015 Chevrolet Suburban. The contact stated that while driving on two occasions, the vehicle did not accelerate as intended. The contact stated that when the vehicle reached 55 MPH, the vehicle dead stopped, and she was thrust forward, and on the second occasion, she sustained a head injury from hitting her head on the steering wheel. Medical attention was not needed. Additionally, on the second occasion, the vehicle began overheating, and the check engine warning light illuminated. The vehicle was towed to an independent mechanic, where it was codes P0700, P0741, and P0796 populated, and the TCM, torque converter clutch circuit, pressure control solenoid C, and transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was unknown.

Filed May 12, 2025 · Engine, Seat belts · 117,000 miles · CA

The contact owns a 2015 Chevrolet Suburban. The contact stated while driving at various speeds, the steering wheel became stiff, and the vehicle lost automotive power. The check engine, seat belt, stabili-trak, and ABS warning lights were illuminated. The contact stated that the vehicle was occasionally towed and taken to the same local dealer on several occasions, where it was diagnosed; however, the failure was not yet determined. The transmission, fuel pump, battery, alternator, and unknown wiring were replaced at the consumer's expense; however, the failure persisted. In addition, the contact related the failure to the federal safety agency Campaign Number: 18V586000 (Steering); however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 117,000.

Filed May 20, 2024 · Engine · NC

The # 7 cylinder valve lifter in the 2015 Suburban engine fails when accelerating in certain situations. This has happened to this vehicle twice at and expense of rebuilding the engine. The in both cases the vehicle was accelerating into fast moving traffic. When the lifter fails the engine loses power and no longer accelerates which requires swerving out of traffic, back to the shoulder to not get rear-ended by on-coming traffic. The problem was confirmed and the service provided indicated that this was a significant issue with this particular engine. Basically, it happens to many of these vehicles. The engine has been rebuilt twice while I have owned it. When the lifter fails the check engine light comes on. These failures occurred on September 24, 2021 and again on September 9, 2023.

Filed May 6, 2024 · Transmission · NC

The transmission has failed several times during driving with no check engine light or maintenance required light appearing. I get monthly reports saying that the engine does not have any problems. My safety and others safety were put at risk because any time during driving the engine can lose power and you will no longer be able to accelerate. This could be dangerous on roads and especially highways if you are traveling at fast speeds and cannot get out the way of others possibly causing an accident. I have recently taken my vehicle to a car mechanic shop and they say this is a common issue in the transmission of similar makes and models around this year. There were no previous warning lamps or messages from the vehicle or the monthly diagnostic reports I receive monthly. The problem started occurring before 150,000 miles.

Filed Mar 11, 2024 · Driver assistance, Electrical · TX

It started with a glitch with the radio/navigation system flashing back and forth and not working. The cooling fan on the vehicle would run for about 10 minutes. The blind spot warning would blink on and off and there was no one else on the road. Then two days later the check engine light came on for about 5 days. Then three days later there was a loss of battery power and the indication light came on stating the car was in battery save mode. Then two days later the power steering system was lost on the highway and all the warning lights on the dash were flashing. The car stalled and refused to start. The tow truck driver tried to jump the vehicle with a battery pack that would jump a diesel and he only got enough power to put the car in neutral.

Filed Sep 8, 2021 · Fuel system · LA

Due to a faulty design, the fuel feed line (GM part # 84200271) has been worn through from vibration resulting in a pin hole in the line at the point where the fuel line is seated in the molded-in clip retainer of the fuel tank. This wear has resulted in raw fuel pouring over the top of the fuel tank and producing a significant risk to life and health from fire and inhalation. The fumes from the raw fuel could be smelled through the A/C vents while driving highway speed (inhalation hazard). Once the vehicle is turned off the fuel leak subsides. However, while idling in park the fuel leak would puddle under the vehicle resulting in a significant and potentially catastrophic fire hazard. While researching the symptoms of my issue, I discovered many complaints of the exact symptoms and findings that I have discovered. I spoke over the phone with a service department employee of a local GM dealership who denied having addressed this issue on other vehicles similar to mine (2015 Suburban LT). I will bring the worn-through fuel feed line to this same dealership to inquire about possible mitigation for this known issue (See service bulletin 17-NA-304). The symptoms that I first noticed were a hard start and the smell of raw fuel in and around the vehicle. No check engine light or other warning messages were displayed to alert me of this failure.

Filed Jul 10, 2021 · Suspension, Transmission · ME · fire

Hello, While driving my Chevy suburban last week as I was pumping gas with my two year old son in the back seat. I saw smoke leaking and rolling out from the bottom of my vehicle. I had shift the vehicle off and inspected thoroughly. I couldn’t see and understand where this was coming from. It wasn’t the engine block and no check engine lights had come on. So I let the vehicle cool and started her up. No issue until I was a mile or two from my family summer rental and all of a sudden the vehicle felt as though it slipped out of gear. I was left without any power and realized I was smoking again. I pulled or what I would call drifted to the break down lane and pulled my little man out of the vehicle. This happened on Saturday and after almost a week in the shop, the dealership sprung me a nice $5200 price for a transmission. I am now looking and seeing two different recalls for this vehicle. Ironically the these two issues look exactly like the two recalls they have for the power train. [XXX] Illuminated FX Inc [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Filed May 25, 2021 · Transmission · 120,000 miles · NY

The contact owns a 2015 Chevrolet Suburban. The contact stated while driving 20 mph, the vehicle decelerated and stalled. The contact stated that the RPM was elevated while depressing the accelerator pedal however, the vehicle failed to respond. The contact stated that the check engine warning light was illuminated. Bystanders assisted the contact in pushing the vehicle to a safe area. The contact stated that he waited for approximately five minutes before restarting the vehicle and continued driving to his residence. The failure recurred and the process was repeated several times before arriving at his residence. The contact stated that an independent mechanic arrived at his residence and informed him that the transmission needed to be replaced. The vehicle was not yet diagnosed nor repaired. A dealer was not contacted. The manufacturer was informed of the failure. The failure mileage was approximately 120,000.

Filed Dec 29, 2020 · 70 miles · WI

Automatic transmission: cooling unit and lines. The person in the chevrolet dealer told me that this can cause a fire. Because the cooling and the oil like was leaking and need to be fix and it will cost me 1240.00 dollars. I take to the dealer because the check engine was flashing not stop.

Filed Jun 2, 2020 · Brakes, Driver assistance · FL

Tl* the contact owns a 2015 chevrolet suburban. The contact stated while starting the vehicle, the check engine warning light illuminated. The vehicle was taken to bomnin chevrolet dadeland located at 8455 s dixie hwy, miami, fl 33143, (305) 669-2709, where the technician associated the failure with the federal safety agency campaign number: 19v761000 (service brakes, hydraulic, service brakes, electronic stability control) however, the VIN was not included. The vehicle has been repaired. The manufacturer had been informed of failure. The failure mileage was not available. *ln*jb