2026 Chevrolet Silverado 1500 transmission problems

Filed Nov 4, 2026 · Engine, Steering · KY

Engine Seized. Truck wouldn’t shift to neutral to be towed. Tow Truck with Dollies had to be called. Blocked/Detoured traffic for six hours at the main entrance to CMH AirPort Construction Parking. Yelled at by Security on site to move truck. Absolutely Humiliating.

Filed Nov 2, 2026 · Electrical, Engine · MI

While driving home from work, I pulled up to the stop sign at the end of the exit ramp. When I released the brake and pressed the gas pedal, my truck would not move. This immediately put me in an anxious state as I was expecting the vehicle to move. I checked my rearview mirror to make sure that there wasn’t anybody coming up behind me and put my flashers on while I tried to figure out what was going on. My eyes moved to the shifter next. I noticed that the vehicle was in park. I reached down to the shifter and tried to put the vehicle in drive, but it would not shift. I then hit the push-to-start button to restart the vehicle. After this, I was able to shift back into drive and finish my commute home. This was an unsafe condition as I experienced an unexpected loss of power. An approaching vehicle would expect me to be moving when the road is clear in front of me. I took the truck to the dealership the next day. My vehicle was repaired under warranty. The cause states "update 2810275 Serial Data Gateway Module Reprogramming with SPS." I did not notice any warning lamps or messages, but I also did not look at the instrument panel when this happened. My first thought was to check for approaching vehicle traffic and to put on my flashers. After I put on my flashers, I looked down and noticed the vehicle was in park.

Filed Nov 1, 2026 · Electrical, Fuel system · PA

I am reporting a serious safety-related malfunction involving my 2026 Chevrolet Silverado 1500 ZR2, purchased new on June 2, 2026. On October 31, 2026, at approximately 9,659 miles, my vehicle unexpectedly shifted into Neutral while I was traveling approximately 65–70 mph on the highway. The vehicle suddenly lost propulsion, forcing me to maneuver through highway traffic to reach the shoulder. This created a serious risk of collision. The vehicle became disabled and required towing. Following the incident, the Chevrolet application displayed two critical warnings: * Transmission System — Service Now * Ignition System — Service Now The application also recorded an unsuccessful starting attempt. I am concerned that this vehicle may contain a dangerous transmission, electronic control, or drivetrain defect capable of causing unexpected loss of propulsion at highway speeds. I request that the federal safety agency evaluate this incident as a potential vehicle safety defect and determine whether similar failures have been reported involving 2026 Chevrolet Silverado vehicles. I have screenshots of the vehicle warnings and can provide repair records and diagnostic findings when available.

Filed Oct 27, 2026 · Driver assistance, Transmission · IN

The 2026 Chevy Silverado 1500 Lt. Can jump modes on its own. When in 4 wheel drive rear wheels lock up. This has been causing poor gas mileage. The lane assist does not hold, it travels well outside of lanes. Cannot use.

Filed Oct 26, 2026 · Engine, Transmission · PA

I bought the truck at 6,400 miles. I was on my way to the dealership because of a clanking sound I heard the day I brought it home. It was at 7,007 miles when it went down. I had it for a total of 5 days. I was coming from a stop when it suddenly lurched and I heard rattling and clanging noises. It had been making noises around 6500 miles that were most likely drivetrain related. Luckily, I was on a side road when the engine locked up. No warning lights. Had the truck towed to the dealership. They said the engine needs to be replaced. Still no delivery date given.

Filed Oct 15, 2026 · Brakes, Engine · TX

On [XXX], at approximately [XXX], I was driving my 2026 Chevrolet Silverado 1500 RST (5.3L V8, 4WD), leased new on [XXX], with about 122 miles on the odometer. I came to a complete stop at a stop sign on an uphill grade at [XXX]. The Auto Stop/Start feature shut the engine off while I held the brake, as designed. When I released the brake to proceed, the engine did not restart, and the truck rolled backward down the grade. The instrument cluster displayed "Press start button." I pressed the start button, the engine started, and I released the brake again. The truck again rolled backward, and the cluster again displayed "Press start button." At this point, the vehicle was in park and with the parking break engaged. I pressed start a second time. I released the parking brake, shifted into Drive, and was finally able to proceed. In total there were 2 failed restarts after an Auto Stop event, 2 uncommanded rollbacks on an incline, and 1 automatic parking brake engagement. No collision occurred. However, the truck rolled backward toward another vehicle behind it with no engine power, and I had to restart it twice while stopped at an intersection. This is a serious safety hazard in traffic, especially on hills. GM has published Preliminary Information bulletin PIT5689N, "No Restart after an Auto Stop Event / No Crank," covering 2020-2026 Silverado 1500 trucks. It cites a loose or broken engine ground strap as a possible cause. This vehicle is 5 days old and the defect appeared within 116 miles of delivery. I am disabling Auto Stop manually at every startup until the vehicle is repaired. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 15, 2026 · Brakes, Engine · TX

Vehicle comes to a stop sign on a low pitch hill. Driver releases the break and presses the gas portal to drive forward and vehicle begins rolling backwards. Driver looks down at the dash and sees a “press start button” message. Driver pressed start button and hears the engine come to life. Driver releases the break and presses the gas pedal to accelerate. Vehicle rolls backwards again. Another message to press start. Driver presses start again. Vehicle is now in park and with the parking break engaged. Driver releases parking break, shifts to drive and is now able to leave the intersection. Issue causes risk of collision due to unexpected rollback. Service appointment schedule for 10/15/26. No warnings presented beyond the start message errors listed above. Newly purchased vehicle: 2026 model year. Appx mileage at time of incident: 122 miles.

Filed Oct 13, 2026 · Electrical, Engine · AL

While driving, the vehicle shifted itself into Park without any driver input and the engine shut off. This has occurred on three occasions, first on May 24, 2026 at approximately 1,000 miles — three days after the vehicle was purchased new. It happened again at approximately 2,300 miles, and a third time at approximately 10,350 miles. Each occurrence happened at less than 10 mph — once while accelerating and twice while decelerating. No crash, fire, or injuries resulted. The vehicle was presented to an authorized Chevrolet dealer for this same defect on two occasions. On the first visit the dealer found no trouble code, could not duplicate the condition, and performed no repair. On the second visit, beginning September 22, 2026, no repair was performed and the vehicle remained out of service in the dealer's custody — 16 working days on that visit alone, 20 cumulative working days across both visits, as of October 13, 2026. A loaner vehicle was provided during both visits. The manufacturer has an open customer assistance case for this defect. The vehicle is not being driven in this condition; if it must be moved, it is moved by tow only. A vehicle that immobilizes itself in motion is a safety hazard to its occupants and to surrounding traffic.

Filed Oct 1, 2026 · Transmission · 26,355 miles · AR

The contact owns a 2026 Chevrolet Silverado 1500. The contact stated that while driving 25 MPH, the vehicle unexpectedly shifted into park(P). The contact stated that during the failure, the instrument panel was blank. After restarting the vehicle, the transmission warning light illuminated. The contact stated that the failure recurred on several occasions while driving at slower speeds. The vehicle was taken to the dealer but was not diagnosed or repaired. The manufacturer was made aware of the failure via phone, and a case was opened. The approximate failure mileage was 26,355.

Filed Sep 30, 2026 · Electrical, Engine · AZ

Multiple instances of engine shutting off while driving and switches to "Park". Most recently the truck suddenly lost power, shut off, stopped immediately, went into Park, jerked extremely hard, and displayed the message “Service Transmission.”