2026 Chevrolet Silverado 1500

Tailgate keeps randomly opening when driving down the road. Vehicle was taken to a Chevrolet dealership for them to address. GM denied warranty claim and will not provide anything in writing. This is a huge safety concern for a work truck that hauls tools and equipment on a daily basis. And the fact that GM will not give anything in writing on the denial is absolute BS.

NHTSA ID

11756288

Incident

Jul 17, 2026

The contact owns a 2026 Chevrolet Silverado 1500. The contact stated that while driving approximately 30-40 MPH, the liftgate opened unexpectedly. The contact pulled over to the right side of the road, exited the vehicle, and closed the liftgate; however, the failure persisted. There was no warning light illuminated. A dealer was contacted. The vehicle was taken to a dealer to be diagnosed; however, the diagnostic result was unknown. The vehicle was not repaired. The approximate failure mileage was 5,070.

NHTSA ID

11756285

Incident

Jul 17, 2026

Mileage

5,070 mi

I was making a sharp turn going about 6 miles an hour. The vehicle suddenly stalled and shifted to neutral. A message appeared on the dash stating, “Please restart vehicle.” The vehicle restarted without issue and no error codes were displayed.

NHTSA ID

11756211

Incident

Aug 9, 2026

I just purchased this vehicle on XXX and on XXX, with less than 300 miles on it, we were in a parking garage at the Galleria Mall in [XXX]. While driving slowly uphill in the garage looking for a parking space, the vehicle suddenly went into neutral and the engine shutoff. After verifying all was well, I restarted the truck and continued to drive. It happened two more times with the same situation, low speed going uphill. I have not taken it to a Chevy dealer yet for diagnostic as there were no lights like the check engine light and no codes presented. My onstar app reports that all is well and no issues, so I know it will not be something they can find when they try to pull the codes. I did a search on the internet for this issue and found others with the same problem, no known fix, and in one case the person was able to return the truck and they purchased a different truck from a different manufacturer. That gentleman said he did try to work with GM at the regional level with a service rep. He said something is causing the voltage to drop in lower gears, causing it to invoke a safety feature to stop the vehicle by going into neutral and shutting off the engine. On an incline, with no engine, the brakes become very hard to push and the vehicle could roll back. In a parking garage, that could mean rolling back into a person or another car. When it happens there are in internal codes that do not show up, but are wiped when you re-start. There are threads on Reddit and in Facebook groups that discuss this issue as well for further evidence. My purpose is to get this documented outside of GM, it seems like a niche problem, but one that could be dangerous in the right circumstances. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11756006

Incident

Aug 8, 2026

I purchased a 2026 Chevrolet 1500 Duramax Deisel truck. At 9500 miles the truck started making popping and loud grinding noises and would shake while driving it. I barely made it to the dealership on August 6th 2026 I took it to Group 1 Chevrolet where I bought it in Houston,Texas and on August 8th was told that they need to replace the engine and do not have an estimated time for repair.

NHTSA ID

11755678

Incident

Aug 6, 2026

2026 Chevy Silverado High Country with 13,193 miles 6.2 engine locked up on 7/29/26 and is currently at my dealer waiting on engine replacment. GM has not fixed the 6.2 liter engine failure issue's!

NHTSA ID

11755470

Incident

Jul 29, 2026

The engine in my 2026 Chevrolet Silverado ZR2 with the 6.2L V8 had a catastrophic failure. While I was driving, the engine suddenly shut off and seized without any warning. The dealer told me they found metal in the engine oil and oil filter and that the engine needs to be replaced. They also informed me the replacement engine is on back order for more than five weeks. The truck is available for inspection. How was your safety or the safety of others put at risk? My truck lost all power while I was driving, which put me and other drivers at risk because it happened without warning. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The dealer inspected the truck and confirmed the engine had an internal failure. They found metal in the engine oil and oil filter and said the engine must be replaced. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The truck has been inspected by the dealer. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? No. There were no warning lights, messages, or other signs of a problem before the engine failed.

NHTSA ID

11754850

Incident

Aug 2, 2026

While using the adaptive cruise on the highway the truck will rapidly slow down as is there is something in it path even though nothing is there. This has happened multiple times on the expressway now and I can no longer use adaptive cruise for fear of what it will try and do.

NHTSA ID

11753229

Incident

Jul 27, 2026

Certain vehicles listed above may have a condition in which the oil filter was not adequately tightened. Dealers are to check and tighten the oil filter if found to be loose.

This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.

Certain vehicles listed above may have a condition in which the vehicle may shift out of park without key fob inside vehicle while in "Protected Idle" Mode. Dealers will update the BCM software. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.

This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.

This PI communicates diagnostic information to assist Technicians with a possible transmission shudder

This Preliminary information communicates to the technician on the a potential cause for Buzz/rattle/vibration/ from the passenger side when the vehicle is under light load, with a 3.0L LZ0 Engine. It also addresses the potential for a slow/no crank or not charging.