2019 Chevrolet Silverado 1500 electrical problems

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 6, 2026 · Electrical, Engine · OH

Chafed or Broken Wiring Harness (Very Common) — This is the most frequent cause on newer GM vehicles. The factory wiring harness to the Mass Airflow (MAF) sensor is too short or secured with an overly tight zip tie. Engine movement causes the LIN bus wire to chafe and break internally near the connector.

Filed Sep 28, 2026 · Electrical, Transmission · 36,000 miles · TX

The contact owns a 2019 Chevrolet Silverado 1500. The contact stated that while driving, the vehicle came to a sudden unintended stop. The contact turned off the vehicle, unhooked the battery, and waited for a while before restarting the vehicle and resuming normal driving. The dealer was notified of the failure, and the contact was informed that the VIN was not under recall. The failure mileage was approximately 36,000.

Filed Sep 22, 2026 · Electrical, Engine · CO

Out of specs crankshaft machining, excessive journaling chamfering & debri in the oil galleries have caused rod bearing failure resulting in total engine seizure. This is consistent with the federal safety agency 25V‑274 recall, of which identifies the 6.2L V8-L87 engine as defective, resulting in 12 recorded accidents. However, this recall does not cover the 2019 model year.

Filed Sep 16, 2026 · Electrical, Engine · MI

V8Component Affected: Electrical System / Power Train (Transmission) / Engine Cooling & WiringDescription of the Safety Defect and Incident:While operating the vehicle, severe electrical degradation occurred due to a catastrophic failure of the factory body-to-chassis grounding system. Upon professional inspection by a certified mechanic, it was discovered that the primary ground wires had suffered extreme thermal degradation, with the mechanic stating that the wiring components "almost melted in his hands" upon physical touch.Because the vehicle's manufacturing-defective ground strap severely corroded and failed, the high-amperage electrical current redirected itself along an unintended path of least resistance: directly through the transmission shifting cables and internal wiring harnesses. This extreme electrical bypass caused extensive thermal damage, melted critical electrical insulation, and permanently fried the Transmission Control Module (TCM) and internal transmission components, causing total mechanical failure.Why this is a Critical Safety Hazard:Fire & Thermal Risk: The failure created an active thermal event under the hood. Electrical current reaching temperatures high enough to melt heavy-duty wiring harnesses poses an immediate vehicle fire risk while operating or parked.Sudden Loss of Propulsion: The electrical short directly compromises transmission communication, risking an uncommanded shift into neutral or total loss of motive power while driving at highway speeds, creating a severe crash hazard.Manufacturer Action / Request for Investigation:General Motors recently issued Customer Satisfaction Program #N252515590 specifically to address this exact "body-to-chassis ground strap corrosion" defect on 2019–2024 Silverados.

Filed Sep 3, 2026 · Brakes, Electrical · 80,000 miles · NY

The contact owns a 2019 Chevrolet Silverado 1500. The contact stated that the vehicle experienced various intermittent electrical failures while driving at various speeds. The contact stated that the power locks and windows either failed to operate as needed or independently operated while driving. The vehicle was inspected by a friend, and a potential issue with the ground fault cable was found. The friend recommended that a dealer inspect the vehicle. The contact stated that the instrument panel intermittently displayed the messages, "Steering Column Lock Needs Service", "Check Engine", and other unknown messages. Additionally, the brake pedal depressed to the floorboard while attempting to start the vehicle but resumed normal operation after the vehicle was started. The vehicle was taken to a dealer but has not yet been diagnosed or repaired. The failure mileage was approximately 80,000.

Filed Aug 12, 2026 · Electrical · 135,000 miles · TN

The contact owns a 2019 Chevrolet Silverado 1500. The contact stated that the vehicle failed to start. The vehicle was towed to the residence and jump-started. The vehicle was then driven to a dealer, where it was diagnosed and determined that the grounding straps were damaged, and one strap was severely corroded and fractured, while the other strap was severely corroded. The dealer determined that the grounding straps needed to be replaced. The vehicle was repaired at the owner's expense. Upon investigation, the contact associated the failure with GM Customer Satisfaction Program: N252515590. The manufacturer was notified of the failure and informed the contact that the cost of the repair could be reduced at the discretion of the dealer. The failure mileage was approximately 135,000.

Filed Jul 25, 2026 · Electrical, Steering · OH

I was camping at a state park outside of Kenton Ohio. On Sunday July 19 2026 while backing up my travel trailer I lost power steering to my 2019 Silverado 1500. then a message came on my display saying service power steering soon and then a check wiring harness warning. I turned off truck and restarted it and warnings cleared and power steering came back. The following morning July 20th started the truck, no power steering and service engine light was on drove to Kenton and had codes read. Had multiple codes for different control modules. Power steering came back and I was able to drive home. Called my dealer and was able to get appointment on July 24. Tried to start truck and it would crank, start run rough for a few seconds then stall out. Had to have it towed to dealer for repair. End result faulty ground strap from body to frame, loss of electric power steering ability while driving due to a ground cable could have been a very dangerous situation for everyone in the vehicle and on the road

Filed Jul 15, 2026 · Electrical · 100,000 miles · NY

The contact owns a 2019 Chevrolet Silverado 1500. The contact stated that a body-to-chassis grounding strap was previously replaced under GM Customer Satisfaction Program: N252515590 (Corroded Ground Strap); however, after the repair, the vehicle experienced electrical failures. The contact stated that while attempting to start the vehicle, several unknown warning lights illuminated, and the engine failed to start. The vehicle was towed to the dealer, where the starter and the ECM were replaced. Additionally, the dealer determined that a secondary grounding strap needed to be replaced, but the part was not covered under the Customer Satisfaction Program. The manufacturer was contacted and referred the contact to the federal safety agency Hotline for assistance. The vehicle was not repaired again. The failure mileage was approximately 100,000.

Filed May 26, 2026 · Electrical · NC

I have a severe safety concern regarding the auto shut off for this Chevy Silverado pick up. Several times I have almost gotten into an accident because while slowing briefly to stop before making a left, turn across traffic, the engine shuts off. When you press the gas, the engine starts back up, but the delay causes a safety concern with oncoming traffic. This feature should have a longer delay or be selectable to turn on. Not require someone to disable it. Every time is driven.