2018 Chevrolet Suburban: check engine light

7 of the 84 complaints about the 2018 Chevrolet Suburban describe check engine light.

owner complaints: 7
of this car's complaints: 8%
recalls: 0

Is there a fix? 231 service bulletins cover this area of the car. See below

Check engine light by model year

2024
3
2023
18
2022
16
2021
45
2020
4
2019
10
2018
7
2017
14
2016
11
2015
17
2014
1
2013
5
2012
2
2011
3
2010
3
2009
3
2008
11
2007
12
2004
3
2003
2
2002
4
2001
7
2000
6
1999
5
1998
4
1997
4
1995
1
1994
1

What owners say

Filed Oct 14, 2026 · Brakes, Engine · MA

On August 7, 2026, while driving a rental vehicle in the Denver, Colorado area with my family, including two young children, the vehicle unexpectedly lost engine power while traveling downhill. The engine shut off, resulting in a significant reduction in brake assistance and creating an extremely dangerous situation. We were able to bring the vehicle to a stop without a collision or injury. After restarting the vehicle, the check-engine light illuminated. The vehicle was no longer considered safe to operate and ultimately required towing by the rental operator. The exact mechanical cause is UNKNOWN. I do not know whether the vehicle was subsequently inspected or repaired by a qualified service center, and I do not have access to its diagnostic or maintenance records. After the incident, I discovered that another renter had reported a substantially similar failure involving the same vehicle approximately one week earlier, including engine problems and a check-engine warning. I have since discovered an additional report of an engine-related issue involving this vehicle after my rental. Despite these recurring reports, the vehicle appears to remain available for rental to the public. I am concerned that this vehicle has a recurring, potentially unresolved defect involving engine shutdown or loss of power while driving. Such a failure creates a serious collision risk, particularly on hills, at highway speeds, or in traffic. I request that the federal safety agency investigate whether this vehicle's repeated failures indicate a broader engine, electrical, or powertrain safety defect. The vehicle remains in the possession or control of the rental operator and may be available for inspection. I can provide supporting documentation of the reported incidents.

Filed Feb 19, 2025 · Engine · 60 miles · CA

The contact owns a 2018 Chevrolet Suburban. The contact stated that while starting the vehicle, the engine experienced rough idling. Additionally, the engine also made rattling sounds while driving with the check engine warning light illuminated. The vehicle was taken to the dealer and two other dealers, Penske Chevrolet of Cerritos (18605 Studebaker Rd, Cerritos, CA 90703) and Camino Real Chevrolet (2401 S Atlantic Blvd, Monterey Park, CA 91754); however, all three dealers were unable to duplicate the failure. The vehicle was not repaired. Upon investigation, the contact related the failure to the Active Fuel Management (AFM). The manufacturer was made aware of the failure but refused to buy back the vehicle. The failure mileage was approximately 60. The VIN was unavailable.

Filed Mar 12, 2024 · Brakes, Electrical · OH

The Trailor brake system, engine light, stabilitrak control system and antilock brake system is on due to the wiring of this vehicle.

Filed Jul 24, 2023 · Engine · 115,000 miles · TX

The contact owns a 2018 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the vehicle jerked with the check engine warning light illuminated and the vehicle inadvertently lost motive power. The vehicle was taken to the dealer; however, the vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact stated that he was informed by the dealer that the failure could not be duplicated, and that there would be a fee for a diagnostic test. The manufacturer was not made aware of the failure. The failure mileage was approximately 115,000.

Filed Jun 14, 2022 · Transmission · CO

We were driving the 2018 Chevrolet Suburban with our three children we tried to accelerate at a green light the car jolted to a halt and someone almost hit us from behind. If this would have happened on the highway we could have caused a major accident and put my kids lives in danger. Was able to get the car to move to the side of the road. We had the car towed to an automotive repair shop and they said there was an issue with the torque convertor and the transmission was totally ruined. There were no check engine lights and no warning what so ever! The repair shop said they haven’t seen this happen on a car with so few miles. Costing us 4.5k and a couple weeks. There are no recalls for this issue on our car.

Filed Jul 27, 2021 · Brakes, Engine · IL

The vehicle began to shake as if it would shut down. Then, the engine light came on. Then I received three text message alerts. We were shown paperwork regarding the service history that was done at Philips Chevrolet. Now we’re getting alerts regarding work that has to be completed within 7 days.

Filed Dec 25, 2018 · Engine · 6,500 miles · WA

Check engine light and miss firing. Faulty fuel injector on cylinder #1.