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.

On XXX As I was driving after picking my kids up from school the vehicle started jerking and different lights came on in the dash.When I got home I told my husband and he called the dealership we bought it from and he was told for us to take them the truck so they can take a look at it. We are almost an hour away from the dealership.As we was driving in the highway about 40-45 mins into driving the truck started loosing power and a loud boom noise happened after the truck just cut off and my husband was able to safely pull over on the side of highway.When he opened the hood smoke was coming out and a weird smell started, he called [XXX] and fighter fighters checked it to disregard a fire.After we contacted the dealer again and they sent a tow truck to get the truck. They took the truck to the dealer but it was their closing time already by the time the tow truck was able to get to us. The truck is at the dealership Phillips Chevrolet at [XXX], at the moment we are still waiting. And now I have my [XXX] really scared of getting in vehicles and she’s scared of that truck because she says the truck almost caught on fire and she keeps saying she’s scared of us driving that truck again. That we are not safe anymore in the truck. And we as parent are concerned of her feelings and the way she doesn’t want to go in the truck again if it gets fixed. We are having a hard time trying to change her thoughts. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11775761

Incident

Oct 21, 2026

Second row door lock/unlock buttons do not function properly. The vehicle may be locked from this position but is unable to be unlocked. This allowed a small child in a car seat to lock themselves in the car but unable to unlock the vehicle using the corresponding button on the door. This is a serious issue which left the child trapped and required rescue from the fire department. This is a known issue for all GM/Chevy SUV from model year 25&26

NHTSA ID

11772057

Incident

Oct 18, 2026

On [XXX], at approximately [XXX] while driving my 2026 Chevrolet Suburban (VIN [XXX], approximately 2,795 miles) on [HIGHWAY NAME], the vehicle suddenly lost all power without warning. The check engine light came on, all the dashboard warning lights lit up, the 4WD indicator light came on, and the steering wheel wouldn't turn, making the vehicle very difficult to control at highway speed. The instrument cluster also displayed a "Service Transmission" warning and a "Lane Change Alert System Off" message. The myChevrolet mobile app simultaneously reported "Service Now: Engine and Transmission System" and "Antilock Braking System." I was able to bring the vehicle to a stop and shift into Park. There was no crash and no injuries. The vehicle was purchased new approximately one month earlier (September 2026) and had already been serviced once by the dealer (September 21-22, 2026) for an engine oil leak (oil pan seal failure) and a front-view camera/ADAS software issue. A sudden loss of power at highway speed is a serious safety defect. The vehicle has not yet been diagnosed for this incident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11769107

Incident

Oct 2, 2026

I work at an express car wash and we have had 3 2026 GMC-Chevy vehicles that have had issues with their antenna covers. There has been proven no malfunction from the car wash, yet, antenna covers are being blown off by the blowers which is potentially air - such as driving down the interstate. Warranty’s are not covering this issue for the customers. I can provide details such as pictures and video footage showing there was no malfunction to my wash, but possibly defective antenna covers.

NHTSA ID

11768855

Incident

Sep 27, 2026

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

This Preliminary Information provides diagnostic tips and guidance for situations where key fobs cannot be learned or programmed successfully.

This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3

If a vehicle has an when attempting to perform a vehicle dynamic sensor learn, the scan tool may display a “Learn Rejected” or “Request Out of Range” message.

Beginning with 2026 model year production, the floor console/armrest lamp design was changed by removing the tilt-switch ball. As a result, the lamp remains illuminated when the floor console compartment lid is closed. The BCM turns the lamp off after the ignition is switched off to prevent battery rundown. This PI is to inform dealers of the change in the lamp and operation of the lamp following repairs.

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 is to inform technicians to not replace any parts at this time and to use the work around provided. When a fix is available, this PI will be updated to a bulletin.