2015 Chevrolet Silverado 1500: engine overheating

Filed Jun 24, 2026 · Transmission · MI

While driving at highway cruising speeds, the vehicle began showing abnormal RPM fluctuation/surging at steady speed. The RPM would repeatedly move up and down even while maintaining a constant speed, including when cruise control was used. There were no warning lights or dashboard messages at the time the symptoms first appeared. The suspected failure is the torque converter/torque converter clutch in the automatic transmission. After diagnosis, I was advised that the torque converter failure contaminated the transmission fluid/internal transmission components, and that the transmission now requires replacement. The failed transmission/related components may be available for inspection upon request, depending on repair timing. This condition created a safety concern because the drivetrain was not operating normally at highway speeds, causing inconsistent power delivery and concern that the transmission could slip, overheat, fail further, or leave the vehicle unable to maintain speed in traffic. A sudden loss of propulsion or worsening transmission failure could increase the risk of a crash. The problem has been diagnosed by a transmission repair facility. The vehicle has not been inspected by the manufacturer, police, or insurance representatives. No crash occurred. No injuries occurred. No warning lamps appeared before the failure. The first noticeable symptom was the RPM flutter/surging at steady highway cruising speed. The exact internal cause is unknown, but the best assessment is torque converter/torque converter clutch failure resulting in contamination and failure of the transmission.

Filed Feb 6, 2026 · Electrical · MA · fire

The failure occurred in the rear sliding window defroster electrical system, specifically at the left-side electrical connection of the power sliding rear window. The component overheated and ignited, causing fire damage and shattering of the rear left portion of the window. The vehicle and damaged components are currently available for inspection upon request. The defect resulted in an active electrical fire during normal vehicle operation (remote start while warming up). This posed a serious risk of vehicle fire, injury to occupants, and potential spread to nearby vehicles or structures. As a firefighter, I recognized the danger and immediately shut off the vehicle and ventilated it; without trained action, the incident could have resulted in a total vehicle loss or more severe consequences. Yes. Copeland Chevrolet in Hudson, Massachusetts inspected the vehicle and confirmed that the damage was consistent with the known defect in the rear sliding window defroster system, consistent with GM Customer Satisfaction Program XXX. The vehicle has been inspected by an authorized GM dealership (Copeland Chevrolet). No police or insurance inspection has occurred to date. No warning lamps, messages, or prior symptoms were present. The failure occurred suddenly and without warning during normal operation while the vehicle was warming up using the factory-installed remote start. This is a known defect acknowledged by GM under Customer Satisfaction Program XXX (which expired in 2022), which described overheating and fire risk in the rear sliding window defroster electrical connection. That program was limited by state and excluded Massachusetts, so I was never notified despite identical risk. This same defect is currently the subject of an active safety recall in Canada, where it is treated as a fire hazard requiring corrective action. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Nov 11, 2025 · Electrical · OH

My rear window defroster circuit started overheating causing my window to shatter.

Filed Sep 10, 2024 · Electrical, Visibility · 103,267 miles · OH

The contact owns a 2015 Chevrolet Silverado 1500. The contact stated that after his wife had activated the remote starter, the rear defroster began emitting a burning sizzling sound, overheated, and short circuited, causing the rear windshield to crack. The contact became aware of Manufacturer Communication Number: N192265660, the federal safety agency ID Number: 10171416 (Power Train, Electrical System). The dealer was contacted, and it was confirmed that the vehicle was not included in the TSB or recall. The vehicle had not been diagnosed. The vehicle had not been repaired. The manufacturer was made aware of the failure, and it was confirmed that the vehicle was not included in the Manufacturer Communication Number. The manufacturer referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was 103,267.

Filed Mar 13, 2023 · Engine · MN

2015 Chevrolet Silverado 1500 with 5.3 liter engine developed coolant leak. Took vehicle to Chevrolet dealer and they said the radiator was failing. According to the service advisor, this was a result of the thermostat "over cycling". They also said GM had a recall for this exact problem for the 2014 models but not for my vehicle. Cost of new radiator and replacement of the defective thermostat was over $1,200.

Filed Dec 7, 2021 · Electrical · IN · fire

Severe overheating and smoke from rear defrost window area. Same issue happened to my vehicle as described in recall number N192265660 with GM. I used remote start to warm up truck and when I went to get in and opened the rear door, smoke bellowed and a bright red glow (flame?) at the rear window was present. Due to the low temperature outside, cold air rushed in and the driver side rear window fractured from thermal shock. Appeared as a short or bad circuit caused the extreme heat in this area.

Filed Aug 18, 2021 · Electrical · CA

wiring harness for vehicle is poorly design and is sitting next to hot engine block where the wires are melted and caused a short in the whole entire vehicle, all system is shut down when overheated, this means while traveling at any speed everything goes dead which is considered a highly unsafe situation.

Filed Aug 11, 2020 · Engine · 94,000 miles · CA

I was on a family trip with my wife and kids and the engine temperature raised and system said to idle engine until it cooled down. I was able to cool the engine down and get the truck home. The chevrolet dealer diagnosed a coolant leak at the radiator. Service bulletin pi1513f refers to this as being caused by a faulty thermostat which results in fractures in the radiator. "this condition may be the result of excessive thermocycles within the cooling system caused by excessive cycling of the thermostat. These excessive thermocycles within the coolant system may cause the tubes to fatigue, crack and leak at the radiator headers. To correct this condition, a new thermostat has been designed that eliminates the thermostats excessive cycling." the quoted cost to replace the radiator and thermostat at the dealer is $1800 gm has apparently extended the warranty to 100000 miles under a special coverage adjustment on the 2014 models, but not the other affected model years.