Chevrolet Silverado 1500 loss of power problems

Filed Nov 5, 2026 · Engine · NH

I was traveling from [XXX] to [XXX] work. Was traveling in the left lane on the [XXX] traveling at approx. 75mph at 8PM when I suddenly lost all power to my vehicle. Everything was running fine; there were no warning signs, no sounds, no dash indicators, no nothing. Just suddenly lost all power to the vehicle. It was terrifying but I was somehow able to navigate to the breakdown lane without crashing, mostly due to all the vehicles around me slamming on their brakes, skidding, and swerving out of the way. The state police showed up and called for a tow. my vehicle was dragged across the pavement with the wheels and transmission locked, and up onto the flatbed. My vehicle was taken to a near-by Chevy dealer where it was "bounced" off the flatbed and onto the lot. The truck was later diagnosed with a failed engine. The dealership wouldn't supply a courtesy vehicle, nor assist with a rental. I was able to figure everything out and travel back home. was notified on XXX that my vehicle was ready. Traveled back to [XXX] and picked up my truck. My truck was pristine before this happened. When I got the truck back it was obvious the left out in the elements with the hood removed as the entire engine bay was covered in what looked like silt. It's definitely not the same truck as before this happened. Ran different, runs different, brakes are different. After a few weeks, my dash started intermittently flickering off. It gradually got worse and a week later it just completely died. Soon after, I traded in the truck for a new vehicle. Took an absolute beating on the trade-in value due to all these issues. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Nov 3, 2026 · Engine · PA

The truck shut down while on the highway, complete loss of power and would not restart. Chevrolet dealership concluded that the engine has locked up/failed. Chevrolet states that 2021 6.2-L L87 engine is not included in Recall 25V‑274 despite similar mechanical failure.

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 Oct 27, 2026 · Engine · OH

On October 18, 2026, I was driving my 2021 Chevrolet Silverado 1500 with the 5.3L V8 engine at highway speeds with my wife and two young daughters in the vehicle when the engine suddenly lost power and the truck began shaking violently. The check engine light flashed, and "Service ESC" and "Service Parking Brake" warnings appeared on the dashboard. The sudden loss of power at highway speeds created a serious safety risk to my family and surrounding motorists. I was able to get the vehicle off the highway safely. Restarting the truck did not resolve the issue, and it was no longer drivable. The truck was towed by a AAA contractor to a Chevrolet dealership. Following inspection, the dealership verbally diagnosed a broken camshaft and advised that the entire engine required replacement. The truck had approximately 98,000 miles at the time. A written diagnosis has been requested, and the vehicle is currently at the dealership. The truck has a documented history of engine problems. In July 2023, at approximately 33,500 miles, a Chevrolet dealership diagnosed code P0300 and documented misfires on cylinders 1, 3, and 7. Warranty diagnostic and repair work was performed. Another check engine light concern was documented in November 2024 at approximately 62,300 miles. In April 2025, at approximately 69,600 miles, Chevrolet again investigated a P0300 multiple-cylinder misfire condition. Beginning around 75,000 miles, the truck also began displaying recurring low-oil warnings. I added oil whenever these warnings appeared and maintained regular oil changes, supported by service records. Despite these prior engine concerns and dealership visits, the engine suffered a catastrophic failure without an immediate warning before reaching 100,000 miles. I am concerned about the potential for sudden engine failure and loss of propulsion at highway speeds and believe this warrants a safety investigation.

Filed Oct 27, 2026 · Engine · 79,000 miles · MN

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving the vehicle at highway speeds, the vehicle shut off and lost power. The vehicle failed to accelerate and coasted off the interstate to a safe stop. The contact stated that several warning lights were illuminated on the instrument panel while the vehicle was losing power. The contact stated that two days prior to the failure, the vehicle was taken to an independent mechanic for an oil change, and there was no failure found. The manufacturer was notified of the failure. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The failure mileage was 79,000.

Filed Oct 26, 2026 · Engine · CA

Incident: Twice our Chevrolet Silverado 2020 Duramax has experienced while operating, sudden with no warning "reduced engine power" and "check engine light" the engine sounds very different and does not operate as it should and presents a safety issue when you are driving and traveling at a high rate of speed. These incidences occurred on 10-4-2026 and 10-23-2026. The vehicle experienced a sudden failure of the engine coolant control valve, triggering Diagnostic Trouble Code P1006. This component failure restricts proper engine thermal management and poses a risk of sudden engine overheating while driving. General Motors has formally acknowledged this identical part failure as a chronic manufacturing and safety defect via Special Coverage Bulletins N252508341 and N252508340, which extend warranty coverage to 15 years/150,000 miles. However, GM has arbitrarily excluded the 2020 model year from this coverage, despite the vehicle utilizing the exact same defective part assembly number as the covered 2021-2023 models. This identical component failure across model years constitutes an unaddressed defect pool that requires immediate regulatory expansion to protect consumers from unsafe engine component failure. please fix this situation TY

Filed Oct 23, 2026 · Engine · MI

The contact’s husband owns a 2019 Chevrolet Silverado 1500. The contact stated that while driving, the vehicle lost power while depressing the accelerator pedal. The failure persisted, and the vehicle started to shut off while driving with the check engine warning light flashing. The vehicle was towed to a dealer, and it was confirmed that there were no open recalls or warranties associated with the VIN. The vehicle was then towed to an independent mechanic and was diagnosed with engine failure. The owner was provided with an estimate for the repair. The manufacturer was notified of the failure, and the contact was provided with a case number.

Filed Oct 23, 2026 · Brakes, Electrical · TX

It said on the dash, "Brake System Failure 43MPH Top Speed," "Service ESC," and lights on were the ABS light, BRAKE light, Engine Light, and Wheel Traction light. My wife and my [XXX] son's safety were at risk while driving on a busy 75mph highway and trying to turn around and make it home as the brakes did not work and having to cross busy streets. It was not able to reproduce but my local mechanic found the bulletin from way back that had not been addressed by GM after numerous times to a dealer for other repairs. I then took it to a local GM dealer that confirmed software update was not applied and they did the repair and I was charged to pay even though this was a known GM issue that never contacted me about this potential fatal random occurrence that could happen after I have taken great care of this truck. There not any warnings before randomly losing power on the highway once she hit 60mph on the on ramp and just started failing slowly. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 19, 2026 · Brakes, Engine · FL

My 2026 Chevrolet Silverado 1500 Trail Boss, equipped with the 5.3L V8 engine and 10-speed automatic transmission, intermittently experiences a complete engine stall while the vehicle is still moving. This condition typically occurs following an extended period of driving, during braking and deceleration at approximately 1 to 5 mph. The vehicle locks the emergency brake and the engine stops. This happened in stop/go traffic as well as in my neighborhood. As the vehicle approaches a complete stop, the engine begins to struggle, with noticeable hesitation and a reduction in engine RPM, before shutting off completely. When the engine stalls, the transmission automatically shifts into Neutral, requiring me to restart the engine before I can resume driving. This is not normal automatic engine start/stop operation. The issue occurs even when the automatic start/stop feature has been manually disabled. The engine shuts down unexpectedly without driver input or an intentional shutdown command. The intermittent nature of this malfunction makes it difficult to predict when the vehicle will stall. The unexpected loss of engine power while the vehicle is moving creates a significant safety concern, particularly when braking, turning, entering intersections, or maneuvering in traffic. The vehicle could become temporarily disabled in an active roadway, increasing the risk of a collision. I have identified reports from other owners of 2026 Chevrolet Silverado 1500 vehicles describing similar unexpected engine shutdowns during low-speed operation, including instances where the transmission shifts into Neutral and requires an engine restart. The cause of this malfunction has not been determined. I am requesting that the federal safety agency investigate whether this condition represents a broader safety defect affecting 2026 Chevrolet Silverado 1500 vehicles equipped with the 5.3L V8 engine. I am concerned this could happen on the highway or cause an accident. Dealer cannot replicate...

Filed Oct 16, 2026 · Engine · FL

Coolant control valve Is available for inspection Safty issues include Loss of power steering and brakes while driving Sudden power limp mode Sudden engine over heating and engine seizure Loss of visibility due to smoke and Loss of defrosting Inspection done by chevolet (live oak Fl) Check engine light and code p1098 appeared after defect.