2026 Chevrolet Suburban 1500

On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001.  This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement. General Motors (GM) issued Recall 25V-274 to address concerns of engine failure in the L87 engines produced between March 1, 2021 and May 31, 2024. GM cited the root cause as a supplier manufacturing and quality issue. GM’s recall remedy for Recall 25V-274 consisted of two different repairs, either an oil viscosity change or an engine replacement, based on the results of the remedy inspection procedure. ODI continues to receive reports of engine failures after the completion of the recall remedy. To date, ODI has received 499 complaints alleging post-remedy engine failure in vehicles subject to Recall 25V-274, 473 of which involved an oil viscosity change and 26 a complete engine replacement. Additionally, ODI has received 191 reports of L87 engine failures in engines produced after the production period cited in Recall 25V-274. GM reported receiving 6,953 complaints of post-remedy engine failure. ODI is opening this Engineering Analysisto continue investigating complaints of post-remedy engine failure. ODI is expanding the scope of this Investigation to include engines produced after the production period cited in the recall. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

The drivers side blind zone light illuminates in the mirror when no objects/vehicles are present. The condition happens every time the vehicle is driven since it was purchased new in July 2026. The false alerts occur frequently when driving and render the left (drivers) side alerts completely unreliable and distracting/dangerous for the driver. The vehicle also vibrates the drivers seat when trying to make left-hand turns and lane changes because the blind zone sensor is incorrectly sensing an object is present when there is not. At highway speeds these false alerts are very distracting and unsafe for the driver. The vehicle has also on more than one occasion applied emergency (very abrupt) braking when trying to back the vehicle out of our driveway, with the dashboard indicator showing an object approaching from the left (drivers side) but no object/vehicle/pedestrian is present or approaching. GM has recently issued a Technical Service bulletin about false blind zone alerts that covers some 2026 Suburbans but we are being told our 2026 Suburban is not included. That makes no sense since our vehicle obviously has an issue with false alerts which is very unsafe and if the vehicle is applying emergency braking when no objects are present it is very dangerous and concerning to even drive the vehicle, especially at highways speeds when other traffic is present. GM’s service bulletin acknowledges there is an ‘anomaly’ with some of their blind zone sensors and ALL vehicles exhibiting these unsafe conditions need to be fixed before causing an accident.

NHTSA ID

11765449

Incident

Jul 19, 2026

While exiting the highway my vehicle suddenly lost power and could not move. I could not put the vehicle in neutral. The engine had completely seized. As a result, my car got hit by a Semi-truck.

NHTSA ID

11764097

Incident

Aug 21, 2026

While driving, suddenly began hearing loud knocking noise and lost most power. Was able to get vehicle off road, where it stopped, and had trouble starting again. Towed to dealer. Diagnosed issue as spun rod bearing.

NHTSA ID

11760416

Incident

Aug 10, 2026

The contact owns a 2026 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, an abnormal knocking sound was heard coming from the engine compartment, and the check engine warning light illuminated. The vehicle was driven to the contact's residence and parked. While reversing out of the driveway the following day, the engine seized, and the vehicle stalled. The vehicle was towed to a local dealer, where the cause of the failure was not yet determined. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 14,800.

NHTSA ID

11760000

Incident

Aug 25, 2026

Mileage

14,800 mi

1) Both screens (driver display and infotainment) go black intermittently. Sometimes the infotainment comes back on, however, you cannot use all the buttons. The hard buttons under the screen for climate control (aside from the on/off ) wont work. The climate will automatically go to 76 degrees on Max Defrost. The rear climate will shut off when this happens. It also causes the radio controls on the back of the steering wheel to not work. 2) It is extremely dangerous to not have a visual indicator for the speed at which I am driving. It is also dangerous to be driving with no AC and instead 76 max defrost, in triple digit temperatures. Especially with small children and a newborn baby. 3) The car has had several repair attempts by a Chevrolet Service department. 4) When it happens its sudden. No warnings. After it happens the Check Engine Light comes on sometimes. This started a week after the car was purchased in March 2026. It is still occurring now in August 2026.

NHTSA ID

11758024

Incident

Mar 13, 2026

The contact owns a 2026 Chevrolet Suburban. The contact stated that while driving approximately 45 MPH, there was a popping sound coming from the vehicle and the vehicle stalled. The vehicle failed to restart. The vehicle was towed to a dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 1,700.

NHTSA ID

11749935

Incident

Jun 26, 2026

Mileage

1,700 mi

The driver-side front door and related body fit/sealing system appear to be defective. The door is visibly uneven and misaligned with the surrounding body panels, resulting in excessive door gaps and significant air intrusion into the cabin while driving. The condition is available for inspection upon request, and photographs and videos documenting the issue are available. The excessive air intrusion creates substantial wind noise and driver distraction while operating the vehicle at highway speeds. The misaligned door also raises concerns regarding proper door sealing, structural fit, weather protection, and occupant safety in the event of an accident. A vehicle of this age and condition should not exhibit such defects. The condition is consistently reproducible during normal driving, particularly at highway speeds where excessive air enters the cabin through the driver-side door area. (If applicable, add: "The vehicle has been presented to an authorized Chevrolet dealer for inspection.in FH dailey chevrolet San leandro, they replaced weather strip, but air is more then what it was before, they declined my service and told me to take the vehicle where I purchased from in epic chevrolet Sacramento. No vehicle is not inspected by anyone. No warning lamps or diagnostic messages were displayed. The primary symptoms were visibly uneven door alignment, inconsistent door gap measurements, and noticeable air intrusion and wind noise while driving. These symptoms were first observed shortly after taking delivery of the vehicle and have persisted since that time.

NHTSA ID

11744376

Incident

Mar 15, 2026

Car shut off in the middle of the road while driving and auto braked. Had to get a tow. Dealership said engine is bad now.

NHTSA ID

11741941

Incident

May 30, 2026

The Rear Camera Mirror display may appear angled downward. Investigation found that an aftermarket or dealer-installed rear license plate frame can contact the license plate lamp applique, pushing the applique upward and skewing the camera display angle. Remove or reposition the interfering frame, verify proper applique seating, and confirm the Rear Camera Mirror display is correctly aligned.

If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing the Image processing module.

This preliminary information communicates diagnostic tips for air leveling suspension system.

This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

This PI communicates information to inform customer that Engineering is aware of concern where the heated seats are inoperative when interior temp is above 86°F and are working on a repair solution.