2018 Chevrolet Equinox: check engine light

Filed Aug 19, 2026 · Engine · WI

While driving, the vehicle experienced a sudden, catastrophic loss of engine power accompanied by severe engine shaking, reduced acceleration, and a lit Check Engine / ESC light. The vehicle was towed to a technician who diagnosed a complete dead misfire in Cylinder 4. Upon detailed inspection, the ground electrode/tip of the spark plug had broken off inside the combustion chamber while the engine was running. The free-floating metal fragment severely gouged the piston crown and scored the cylinder wall, resulting in a total loss of compression and catastrophic engine failure at just under 51,000 miles. This unexpected engine failure causes an immediate and dangerous loss of motive power while operating in traffic, creating a severe crash hazard for passengers and surrounding motorists. This issue appears to stem from a known component defect (GM Technical Bulletins PIP5657C & 21-NA-255) related to premature spark plug failure and low-speed pre-ignition (LSPI) in the 1.5L turbo engine.

Filed Aug 17, 2026 · TX

The car had a engine code of P171d my safety and others was put at risk because of the vehicle malfunction while not able to drive after the light turn green or keeping maintaining a searching speed. The engine code was confirm at the dealership while getting serviced. The engine light up here, two days before going to the dealership to get it serviced.

Filed Jun 22, 2026 · Engine · CA

My 2018 Equinox is failing California Smog due to an incorrect CVN error code, which is covered under Emissions Recall N212345540 or N202298780 and the dealership is refusing to reflash it and asking me to pay for a full diagnostics when there is no check engine light on. I also had a full diagnostic run on June 2nd $289.99 which confirmed this code and referred me to the BAR Referee who also confirmed this is causing the issue.

Filed May 23, 2026 · Engine, Transmission · IL

While driving over the expressway, the engine light came on the vehicle started revving extremely hard but was decreasing speed to less than 20 miles per hour I had to cut on the hazards and coast into s safety lane where I could get off the expressway. I then shifted the car into park cut off the vehicle and cut it back on, the car started up but make loud noises from the engine I was able to coast my way home and park the vehicle. When I checked the app for issues it started engine and transmission service immediately. I looked up the issues on website and was given link to power train recall but it says my Vin is not added in recall....I have to look into getting my transmission serviced

Filed May 14, 2026 · Brakes, Engine · WI

Travelling on a highway with 70 MPH posted speed limit, the vehicle dashboard signaled the check engine light and a variety of warnings that "power reduction measure" was enabled and to "service brake assist." At the next available exit, I was able to exit from the highway and go to a gas station, where upon pulling next to a pump the brake pedal became extremely hard and nonresponsive, resulting in poor braking, nearly striking the car in front of me, even at a very low speed. Upon a quick internet search, it appeared that other vehicles were having the same issue, and it was recommended not to drive, as well as information referring to an ongoing class action lawsuit. A tow was called and brought to the nearest Chevrolet service center (Nels Gunderson Chevrolet), where they confirmed the brake booster vacuum pump failed (exploded) and sent shrapnel into the camshaft, noting that both would need to be replaced, which is the exact same repair that other vehicles similar to this one are having or have had.

Filed May 7, 2026 · Engine, Transmission · 160,000 miles · MD

The contact owns a 2018 Chevrolet Equinox. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to a local independent mechanic, where it was diagnosed as needing transmission fluid. The vehicle was repaired. In addition, the contact stated that the failure reoccurred, and the vehicle was taken to another independent mechanic, where the vehicle was diagnosed with missing bolts on the start-stop accumulator impact. The local dealer was not contacted. The vehicle was not diagnosed or repaired. Upon further investigation, the contact related the failure to the federal safety agency Campaign:20V668000 (Power Train); however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 160,000.

Filed Apr 28, 2026 · Engine, Transmission · 168,053 miles · MI

The contact owns a 2018 Chevrolet Equinox. The contact stated that while driving approximately 80 MPH, the vehicle unexpectedly decelerated. The contact pulled over to the closest exit and pulled over to the side of the road. The vehicle was turned off and then restarted; however, while attempting to drive forward or reverse, the vehicle failed to move. The contact inspected the vehicle. While inspecting the vehicle, the contact became aware that there was fuel leaking from the side of the engine near the high-pressure fuel pump underneath the vehicle. The check engine warning light was illuminated. The vehicle was towed to a certified mechanic, who diagnosed that the transmission intake failed, causing the transmission to fail. The transmission was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 168,053.

Filed Mar 5, 2026 · Fuel system · 75,000 miles · TN

The contact's mother owns a 2018 Chevrolet Equinox. The contact stated that while his sister was driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to a local dealer, where it was diagnosed and determined that the high-pressure fuel pump and other fuel system parts needed to be replaced. The vehicle was not repaired. The contact researched online and related the failure to the federal safety agency Campaign Number: 18V358000 (Fuel System, Gasoline); however, the VIN was not included. The manufacturer was contacted, and the contact was referred to the federal safety agency Hotline to report the failure. The failure mileage was approximately 75,000.

Filed Feb 11, 2026 · Fuel system · 148,000 miles · TX

The contact owns a 2018 Chevrolet Equinox. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The vehicle sputtered, and there was a strong fuel odor inside the vehicle. The contact stated that while depressing the accelerator pedal to move off from a stop light, the engine shut off. The traction control and check engine warning lights were illuminated. The failure had occurred while the contact was driving her minor child to school. The vehicle was driven to the residence. The vehicle was then towed to the dealer; however, the diagnostic result was not provided to the contact. The contact referenced an unknown recall with a similar failure; however, the VIN was not under recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 148,000.

Filed Feb 9, 2026 · Fuel system · SC

For the 4th time since November 2025, my vehicle has shut off while driving and there was a severe gas smell. Check engine and traction control lights on dash. So far the turbo booster and fuel injector have been replaced but the issue keeps happening. This vehicle is not on recall list for high pressure fule pump recall. I think it should be. Vehicle goes into limp mode and all the gas leaks right out of the vehicle making it unsafe to drive due to a fire hazard. I have spent over $4000 trying to make this vehicle safe to drive.

Filed Jan 26, 2026 · Brakes, Engine · 150,000 miles · FL

The contact owns a 2018 Chevrolet Equinox. The contact stated that there was an abnormal odor of fuel coming from the vehicle. The contact stated that the brake pads were wearing abnormally quickly. The message speed reduced was displayed. The engine warning light was illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 150,000.

Filed Jan 18, 2026 · TX

My Code for the transmission is showing up for inspection the engine light on but no noted transmisson prolems noted 2017 is showing up.