Chevrolet Express check engine light comes on

Filed Sep 22, 2026 · Fuel system · 125,000 miles · CA

The contact recently purchased a 2003 Chevrolet Express. The contact stated that the check engine warning light was illuminated on the instrument panel due to a corroded catalytic converter. The contact received notification of the federal safety agency Campaign Number: 12V388000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The local dealer was contacted. The manufacturer was made aware of the issue; however, the contact was referred to the federal safety agency Hotline for assistance. The failure mileage was 125,000.

Filed May 8, 2026 · Transmission · CA

-Transmission locked - broken output shaft ring gear weld. -Yes its available for inspection. -Vehicle came to complete stop in middle of freeway as if emergency brake was applied unknowingly. Could be bad if going around corner or downhill -Problem confirmed by dealer -No -No warning signs or check engine light

Filed Sep 10, 2025 · Transmission · NJ

I am reporting a recurring transmission defect in my 2019 Chevy Express Cargo Van. Shortly after purchase, I noticed clunking sounds when slowing down or coming to a stop. The issue progressed into rough shifting and eventual check engine lights with codes P0722 and P0700. The dealership stated the valve body had already been replaced in 2020 and suspects the torque converter is the root cause, which is causing repeated valve body failures. These transmission failures create unsafe driving conditions, including loss of smooth deceleration and unpredictable shifting behavior. I believe this is a design flaw affecting the Hydra-Matic transmission system and may qualify as a safety risk. There are multiple class action lawsuits currently pending regarding GM’s 8-speed transmissions (Speerly v. GM; Battle v. GM), and many consumers are reporting similar symptoms.

Filed Mar 8, 2025 · Transmission · FL

My 2021 Chevrolet express van with an 8L90 transmission has failed after only 80k miles, willing to have it inspected. Check engine codes show P0700 and P2714 on 02/08/25. No prior warning lamps. This product has put my safety at risk due to overheating and making the vehicle go into limp mode while on public roadways. The product is known to fail for trucks alike with the same transmission but has yet to be reported for the Chevrolet express. Has only been confirmed via OBDii scanner from parts shop.

Filed Feb 24, 2025 · Transmission · 30,000 miles · CA

The contact owns a 2009 Chevrolet Express. The contact stated that upon starting the vehicle, the contact became aware that the check engine warning light was illuminated. The contact took the vehicle to a local dealer, where it was diagnosed, and the contact was informed that the transmission was faulty and needed to be replaced. The transmission was replaced, and the contact continued to drive the vehicle normally. The contact stated that while driving 50 MPH, the vehicle started to vibrate abnormally. There was no warning light illuminated. The contact pulled over to the side of the road and the vehicle was towed to a local dealer to be diagnosed. The contact was informed that the transmission and the driveshaft had failed and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 30,000.

Filed Sep 5, 2023 · Fuel system · SC

The fuel pump power control module in this vehicle has caused the fuel pump to fail or operate intermittently, interrupting the flow of fuel to the engine. When the engine does not receive adequate fuel, the vehicle has unexpectedly stalled. This has happened several times. At times has seen a check engine light or experienced a rough running engine. The vehicle may also be A vehicle stall without warning could increase the risk of a crash, especially at high speeds. This vehicle has been taken to a GM or Chevrolet service center twice for this problem. The first time, the fuel pump module was replaced. The second time, there was wiring that was bad that had to be traced down that was related to the fuel pump module failing. It has now happened a third time, while driving down the road, the vehicle suddenly shuts off. It has less than 5,000 miles on the engine. This vehicle has been out of service to the owners for an inordinate amount of time since ownership. It was in the shop 38 days the 2nd time. It is now taking a very long time with GM customer care for them to even find a place to work on it and to have it towed there. This has happened several times. I have created a log of events. I will enter the first time that this happened below and then provide other data.

Filed Apr 8, 2022 · Engine · 26,000 miles · NY

The contact stated that the 2020 Chevrolet Express was used as a school bus. The contact stated while driving at various speeds, the vehicle suddenly stalled and would not restart. During the failure the check engine warning light was illuminated. The vehicle was towed to the local dealer but the failure could not be duplicated and no repair was performed. The manufacturer was notified of the failure. The failure mileage was 26,000.

Filed Jun 25, 2019 · Electrical · 160,000 miles · NJ

Tl* the contact owns a 2009 chevrolet express. The contact stated that the vehicle stalled several times and the check engine indicator illuminated. The vehicle was excluded from the federal safety agency campaign number: 14v614000 (electrical system); however, the vehicle exhibited the same failure as the recall campaign. Hawthorne chevrolet (1180 goffle rd, hawthorne, nj 07506, (973) 453-2564) was contacted and did not assist. The vehicle was not scheduled for a repair appointment. An independent certified mechanic diagnosed that there was an electrical short due to contamination on the chassis electronic control module. The vehicle was not repaired. The manufacturer was notified of the failure, indicated that the vehicle was excluded from manufacturer recall number: 14515, and provided no assistance. The approximate failure mileage was 160,000.

Filed Apr 15, 2019 · Engine · 19,400 miles · IL

We've had 4 instances of "engine power reduced" and check engine light, with no prior warning of issue on the dash display. I believe this is due to an issue with the diesel particulate filter soot load tracking. The first 3 occurred on rural highway and the 4th on a local highway at speed. The power reduction is immediate and severe enough that the vehicle rapidly loses speed and cannot keep up with traffic. Had traffic been close or with a trailer, there would be risk of being rear ended due to the sudden loss of speed. I feel there should be some warning to give a few seconds even to put on hazards and prepare. The last two events had code: p2463, the dealer ran a service regen, but no fault was found. On the last one, the dealer gave me gm service bulletin #10-06-05-002g stating the gm would no longer cover the service regen under warranty for p2463 with no fault found. I the purchased an obd reader to monitor the dpf soot load and observed erratic behavior in the soot load, with 2 instances of the loading jumping over 100%, but apparently not enough to trip the check engine. I then contacted gm customer service to express my concern and share the data, the dealer then ran additional tests under gm's tech guidance, but in the end gm states that they could find nothing wrong and the vehicle is operating as intended. I've attached the service records. The last record shows the dealer incorrectly listed my concern. My communications with gm customer service have all been phone calls.

Filed Jul 21, 2016 · Driver assistance, Engine · 41,000 miles · VA

I bought a chevrolet van express with a 6.0 v8 engine a year ago with only 37000 miles. Approximately 2 months after purchase, I began having trouble with the engine and stabilitrak system in addition to the low beam headlight failure detailed below same across the entire v8 6.0 engines produced by chevrolet. The van vehicle shook violently stressing all the occupants. While traveling on the highway my check engine and traction light illuminated simultaneously. I was also alerted that "engine power was reduced" and my vehicle shut down two times in a 30 minute span of time. Now with only 41,000 miles I have parked the van until a recall corrects the dangerous safety problems. Again while traveling on the highway my air bag sensor went off with the check engine and traction light again illuminated simultaneously. The van vehicle shook violently stressing all the occupants. I was alerted that "engine power was reduced" and my vehicle stopped cold. I will never buy another gm product they are fraught with electrical problems. This is causing safety issues being in a compromising position 3 times with 9 people and 2 are infants in the van. Research shows this to be an ongoing issue. This has been a nightmare. Something as dramatic as a total engine failure in a car that is as popular as the v8 6.0 engine is a frightening issue that everyone across the industry is going to want to know more about. F the engine won't restart . Tthe steering will feel increasingly heavier, making it harder to steer. Also the power boost for the brakes disappears after one or two applications, making the van harder to stop. In the affected vehicles, the underhood bussed electrical center (ubec) housing can expand and cause the headlamp low beam relay control circuit wire to bend. If the wire is repeatedly bent, it may fracture causing a loss of low beam headlamp illumination.