2023 Chevrolet Suburban

The contact owns a 2023 Chevrolet Suburban. The contact stated that while entering a parking lot at a low speed, the engine shut off without warning. The vehicle was towed to a dealer, where it was diagnosed with engine failure, which was associated with NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The vehicle remained at the dealer for approximately three months before the engine was repaired. The contact stated that while driving recently, the vehicle hesitated upon depressing the accelerator pedal. No warning light illuminated. The dealer and the manufacturer were not notified of the recent failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 50,000.

After having the proper recall performed. The engine locked up while driving on interstate. Total loss of power in heavy traffic nearly causing an accident.

My 2023 Chevrolet Suburban equipped with the 3.0L Duramax diesel engine (LM2) has experienced a recurring engine oil leak involving the rear main seal/lower timing cover area. The vehicle has required repeated dealer repairs for substantially the same oil-leak condition, including major engine-related disassembly, but the leak has returned after repair. This is a safety concern because failure of the rear main seal or lower timing cover sealing system can result in loss of engine oil while the vehicle is being operated. A significant oil loss could potentially cause loss of oil pressure, engine damage or engine failure and resulting loss of propulsion while driving. Leaking engine oil also has the potential to contact hot engine or exhaust components, creating an additional safety concern. The problem has been inspected and confirmed by authorized GM dealerships and documented on multiple repair orders. This does not appear to be an isolated occurrence on this vehicle because substantially the same engine oil leak has required repair more than once. GM has previously issued service information, including Bulletin PIP5795, concerning rear main oil leaks on 3.0L LM2 Duramax engines where the rear main oil seal may move or become severely shifted out of position in the timing chain lower cover. I am concerned that repeated repair of this condition may not adequately address the underlying cause and that the oil leak could recur while the vehicle is being driven. I am requesting that NHTSA review complaints and repair data involving rear main seal/lower timing cover oil leaks on GM 3.0L Duramax-equipped vehicles to determine whether a broader safety-related defect exists.

Car died in middle of nowhere at high speeds

The contact owns a 2023 Chevrolet Suburban. The contact stated that the vehicle had experienced excessive oil consumption. The contact stated that while driving at various speeds, the vehicle chugged, jerked, and lunged forward. The vehicle was taken to the dealer; however, the failure could not be duplicated. The contact stated that the failure reoccurred. The vehicle was taken back to the dealer, where the spark plugs were replaced; however, the failure persisted. The dealer was notified of the failure and advised the contact that the spark plugs might need to be replaced. The contact stated that while driving and coming to a stop, the vehicle chugged, lunged forward, made an abnormal clicking sound, and almost struck another vehicle. The check engine warning light illuminated. The OnStar mobile APP displayed the messages "Engine and Transmission System - Please Schedule Service Now," "Transmission System Issue - Please Schedule Service Now," and "VVT Issue detected - Please Schedule Service Now". The contact was able to pull into a parking lot. The vehicle was taken to the dealer, where it was diagnosed with engine lifter failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 63,000.

6.2 V8 while operating threw multiple error codes, went into crawl mode unexpectedly.

The contact owns a 2023 Chevrolet Suburban. The contact stated that while driving approximately 65 MPH, the transmission erroneously shifted to neutral(N), and the vehicle decelerated unexpectedly. The vehicle was pulled off the freeway and parked on the shoulder of the road, and the police were contacted and arrived at the scene and assisted with removing the small children from the vehicle. The vehicle was later towed to a nearby towing lot. The contact later received messages on the App for transmission and engine failures. The cause of the failures was not yet determined. The local dealer was notified of the failure. The manufacturer was not yet contacted. The contact stated that the vehicle was previously serviced under the NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); even though the vehicle had experienced the failure listed in the recall. The failure mileage was 25,300.

The contact owns a 2023 Chevrolet Suburban. The contact stated that the front passenger’s and rear driver’s side rims were cracked. The front passenger’s side rim was replaced by the dealer under warranty, while the rear driver’s side rim was replaced with an aftermarket part. The manufacturer was notified of the failures but declined assistance. The owner expressed concerns that the remaining factory rims might also crack and were prone to failure while driving. The failure mileage was approximately 100,000.

I brought my Chevrolet Suburban High Country in to the dealer pursuant to a recall for engine issues due to a manufacturing defect in connecting rods and crankshafts that can cause catastrophic engine failure. The service center changed the oil viscosity and fill cap and stated that the change should eliminate the issue. I have had persistent engine knocking upon acceleration since then and it is getting louder and more prominent. A suspension warning intermittently flashes as well. Please advise, thank you

We purchased a 2023 Chevy Suburban in January of 2026. In May the vehicle shut off on me at a stop light. The check engine light flashed after I was able to restart it. I took it to the dealer and they said they "couldn't recreate the issue" even though there was an engine misfire code on all cylinders. They told me to come pick it up and bring it back if I had further issues. The second time this happened I had issues getting the vehicle started. This was June 2026 Once I finally got it started and was driving all the service lights started going off and the check engine light started flashing. I took it to a different chevy dealer and was told the same thing. This time I had 23 different service codes that showed up. Including the engine misfire code. So we picked it up and continued to drive it. On July 10th we were towing a 7k lb camper home when we lost all power. Thankfully we weren't driving fast and we're able to stop. This left us stranded at a busy intersection for 2 hours. The car would not go out of neutral. Had we been going 70 on an interstate we could have very seriously been hurt. The car had to be towed back to the dealership where we were told the engine locked up and needed to be replaced. My husband and I had our [XXX] child in the backseat with us. This was a family car that we purchased and told twice that they couldn't find anything wrong with it. The vehicle has been at the dealership waiting on a motor since July 11th. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The fuel pump module on this vechicle failed, and there's a recall for 2021 I believe other years should be considered as well since this was a known issue as soon as we arrived at the dealership and they wanted over $400 to replace this part which is only $45.

My vehicle was met with an accident on June 28, 2026. The accident was very swear and driver get internal injuries like swelling on face pain in head and ribs due to the heavy shock. But non of the airbag has been activated for safety of driver.

The sunroof drains continue to fail. I’ve had multiple occasions where the car has had drains back up or be disconnected.. This is a safety issue because it creates mold as water falls in the headliner and then the cabin. It also creates rust, particularly behind the dashboard. That’s not rust proof. Despite being under warranty, the dealers are useless and helping address the issue because it’s la design flaw. The multiple water intrusions also affect the electronics in the vehicle., potentially disabling critical features like airbags and safety systems.

The engine of this car has been under recall for multiple issues during the time we have owned it. The most recent issue that was experienced was total engine failure and electrical malfunction while driving on a busy street near train tracks. The vehicle was making a loud banging sound moments before this occurred. I wasn't even given time to get to a safe spot to investigate the issue. When it shut down, a quick message flashed across the dash board--stating ability to shift had been lost (or something to that effect)--the vehicle then flipped into neutral and immediately lost power. My safety was put at great risk due to the fact that the entire vehicle shut down moments after I crossed over a very busy railway track. The vehicle had to be towed to a nearby Chevrolet dealership where it has been confirmed there was total engine failure as well as blown main electrical fuse.

My 2023 Chevrolet Suburban Premier is covered under GM recall 25V-274 for the 6.2L L87 engine defect (loss of propulsion from connecting rod and crankshaft failure). In XXX, the dealer notified me my vehicle required a full engine replacement under this recall. Wareing Sheridan Chevrolet in [XXX] replaced the engine, and the vehicle was out of service approximately 12 to 14 days. Approximately 6,000 miles later, on XXX, the replacement engine failed while I was driving on the interstate highway near Billings, Montana. There were no warning indicators of any kind until I suddenly lost power. Only at the moment power was lost did the check engine light come on and a low oil pressure warning appear. I was barely able to get the vehicle off the interstate before it died. I had my family in the vehicle, and losing power on the interstate with no warning created a serious risk of a crash. The vehicle had to be towed to Denny Menholt Chevrolet in Billings, MT. On June 13, 2026, the dealer confirmed the vehicle needs a second complete engine replacement under the same recall. This is the second L87 engine failure and second full engine replacement on this vehicle under recall 25V-274. No crash or injuries occurred. I have an open case with GM (#XXX). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2023 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the steering wheel became difficult to turn and exhibited resistance, with no warning lights illuminated. The vehicle was taken to the dealer, where it was diagnosed that the steering wheel had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 56,000.

The vehicle was shaking and shuddering when trying to maintain highway speeds. Would have to slow down to maintain safety. The dealership advised the transmission needs replaced however we are seeing this is a widespread problem that GM has refused to admit fault for.

Transmission malfunction. This has appeared several times at highway speeds and low speeds. Driver to limp along in the slow lane to exit ramp and take back roads to get back to base. The current problem has been confirmed with error codes P0747. Check engine light comes on with a screen prompt “Reduced Acceleration Drive with Care”.

With out any warning engine shake and running roughly Loud engine noise more than ticking and losing power with reduce speed

The engine siezed up due to the issues that are related to the recall. Currently waiting for a new engine, it has been almost 5 weeks and no time frame on when it will be fixed.