Chevrolet Silverado 1500 stalling problems

Filed Nov 5, 2026 · Electrical, Transmission · FL

Q1: While driving my vehicle it started shifting very violently kind-of out of nowhere, without notice and did not resolve. This and many other factors, such as the diagnostic data retrieved from a nearby auto-parts store, lead me to believe this is likely due to an unresolved re-call on the vehicle that I just started receiving in the mail, the TCM Valve/Sensor. The vehicle is available for inspection upon request, at George Nahas Chevrolet, located in Wildwood, FL. Q2: My safety and that of others was severely impacted as it was indeterminate when the vehicle would violently over-rev and up or down-shift, while also leaving the possibility for the vehicle to just stall completely or to potentially have a total "rear wheel brake lock-up" scenario, as mentioned in the federal safety agency Re-Call. (N242454440 | RIONL-24V797-0912) This issue left me stranded and the vehicle was towed to a nearby GM Dealership, noted above. Q3: This issue was noted in third-party/independent diagnostic data (available upon request), prior to delivery of the vehicle to the dealership. Additionally, the issue was noted at the GM Dealership after four (4) months of repair attempts. The issue was re-encountered during a test drive when the dealership tried to return the vehicle to me un-repaired, demanding payment w/o invoice. The GM Certified Diesel Technician and I test drove the vehicle and found the issue to be the same or even worse. During this test drive, the GM Diesel Tech noted that the TCM could likely be one of the primary issues causing or contributing to the harsh shifting. Q4: The component was supposedly inspected and replaced by the dealership. However, the federal safety agency Re-Call is still showing as INCOMPLETE and the dealership will not provide me with an invoice or any data regarding this matter. The manufacturer was notified months ago and asked to provide data in relation to this matter, but still no resolution. Please let me know if you can inspect and/or assist in any way. Q5: No

Filed Nov 2, 2026 · Electrical · TX

My 2019 Chevrolet Silverado 1500, VIN [XXX], with 137,640 miles, experienced repeated Battery Saver warnings, severe charging voltage fluctuations dropping as low as 9 volts, and intermittent reductions in engine power and RPM while driving. Upon inspecting the alternator, I discovered severe overheating at the positive battery cable (B+) connection. The plastic insulation surrounding the alternator terminal had melted away, and the charging cable insulation was brittle and heat-damaged. I have photographs documenting the damage. I reviewed GM safety recall N192273510 (the federal safety agency 19V888), which describes loose alternator B+ connections causing intermittent electrical failures, arcing, overheating, possible engine stalling, and fire hazards. The symptoms and physical damage described in this recall closely match what occurred on my vehicle. However, both Chevrolet and the federal safety agency indicate that my VIN is not included in the recall. I contacted GM Customer Assistance and received case number [XXX] after requesting escalation. GM advised that my case would not become active until a dealership inspected the vehicle. A Chevrolet dealership quoted $1,345 to replace the alternator and positive charging cable without physically inspecting the truck. Towing and diagnostic expenses are estimated at an additional $400. I am concerned that other 2019 Silverado vehicles excluded from recall 19V888 may experience the same potentially dangerous electrical failure. I request that the federal safety agency investigate whether the existing recall population should be expanded to include additional affected vehicles. The vehicle has not been repaired, and the damaged components remain available for inspection. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 29, 2026 · Engine, Transmission · MS

The lifter on my cylinder one is failing. This is a known issue with the Chevrolet 5.3L 8cylinder engine and 2021 models are known for being notoriously bad with lifter issues. My safety and the safety of other drivers that own 2021 Chevrolet models is impacted due to this issue can cause the engine to completely fail and shut off while driving which could cause severe injuries up to death. The problem is a widespread issue and mine was confirmed by an independent service mechanic. The vehicle is now being inspected by the dealership. The issue did not arise until I reached 104,000 miles.

Filed Oct 24, 2026 · Electrical · WA

Due to a manufacturing defect outlined in Gm internal bulletin #PIT6452E caused an electrical motor to stall, overheat, melting the plastic HVAC box and actuator doors and fill the cabin with a burning plastic smell. 50°+ heat above cabin thermostat setting was documented blowing extreme heat and burning plastic smell into the cabin. The electrical short, burning smell and melted components make the vehicle unsafe to drive. The heat issue has been reproduced by the technician. Documentation of this issue is currently not available in writing. Verbally I am told all this but Both Kendall Chevrolet of Marysville and GM customer care supervisors refuse to put in writing any mention of melting, burning, electrical short, safety hazards or that the vehicle is not safe to drive, even after multiple requests for written documentation. The only inspection I am aware of is from Kendall Chevrolet service department. No dashboard lights or warnings illuminated.

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 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 6, 2026 · Engine · TX

The contact owns a 2017 Chevrolet Silverado 1500. The contact stated that while the vehicle was stopped, the vehicle stalled. The contact allowed the vehicle cool down for a while and the vehicle returned to normal functionality. The contact stated that the failure persisted during high temperatures.

Filed Oct 6, 2026 · Engine · 172,000 miles · PA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving approximately 35 to 40 MPH, the vehicle stalled and failed to restart. The contact retrieved DTC: P228C and P030 after scanning the vehicle. The vehicle was towed to a service center, where the contact was provided DTC: P228C, P0340, and P0C6. The contact was informed that the timing chain and guide had failed and that the engine needed to be replaced. The vehicle was not repaired. The failure mileage was approximately 172,000.

Filed Sep 30, 2026 · Brakes, Electrical · 2,600 miles · AR

The contact owns a 2026 Chevrolet Silverado 1500. The contact stated that after reversing at 3 MPH and then shifting to drive, the vehicle stalled. The parking brake independently activated with the message “Press to Start” displayed. The failure was a recurring failure. The vehicle was restarted after releasing the parking brake and pressing the push-to-start button. The dealer was contacted but was unable to duplicate the failure or determine the cause of the failure. The failure mileage was approximately 2,600.

Filed Sep 27, 2026 · Fuel system · FL

Truck stalled out while driving as if it had run out of fuel. Had to be towed to my house