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Power Train, electrical System
04/20/2026
2025 CHEVROLET SUBURBAN HIGH COUNTRY. Vehicle is parked in my garage. Went out in the AM and the engine only cranks, will not start. Called On Star for roadside assistance. Sent a tow truck, the vehicle could not be towed due to the electronic transmission. There is no way for an owner to place the transmission in neutral. Vehicle is stuck in my garage. GM customer service referred me back to roadside assistance who for the second time stated that they could not help me. This is a serious issue. The fact that the transmission can NOT be shifted into neutral unless the engine is running is a very serious safety concern.Called GM helpline a second time. They said that I should call for a tow on my own. Waiting for the selling dealer to call me back. Vehicle is currently stuck in my garage and GM does not care.
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Visibility/wiper
04/17/2026
Car was parked (in covered area) when back window shattered sometime after 12pm. Car had not been driven in two days and outdoor temperature started at 62 that morning so there were not extreme temperature changes as at the time the window shattered, it was approximately 75 degrees. No apparent reason for breakage as we live in a secluded area and were nearby outside enjoying the day.
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Engine And Engine Cooling
09/20/2025
The contact owns a 2025 Chevrolet Suburban. The contact stated that while driving 25 MPH, a yellow triangle warning icon was displayed, and a message to "Please Add Oil" was displayed. The vehicle was taken to a dealer, where it was diagnosed with a broken part and oil was leaking oil onto the oil filter. The vehicle was repaired. The contact stated that approximately 1,000 miles later, the same triangle icon was displayed and with the same message displayed while driving. The vehicle was taken to the same dealer, where it was diagnosed that the oil needed to be changed. The vehicle was repaired. The contact stated that approximately 1,000 miles later; while driving at an undisclosed speed, the same triangle warning icon and the message were displayed with the check engine warning light illuminated. The vehicle was taken to another dealer, where it was diagnosed, and it was determined that the vehicle was consuming engine oil, and the oil needed to be changed. The vehicle was repaired,...
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Engine
02/14/2026
Driving on Highway at approx 70mph, lost propulsion and speedometer went to 0. Came back after approx. 5 seconds. After exiting highway and stopping, clear knocking/clanging noise from engine. GM states full engine replacement needed. This is a 2025 6.2 V8, thought these issues were fixed?
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Power Train
12/23/2025
Purchased a brand new vehicle on 23Dec2025 (evening) and then drove it home and parked it in my garage. Vehicle was in my garage at 64 miles on the odometer. Vehicle started smoking and the transmission cooler line had the catastrophic failure spilling oil all over the street, driveway, and garage. It was towed from my garage to the selling dealer (Walser Polar Chevrolet in White Bear Lake, MN) on 24Dec2025. Service center confirmed a manufacturing defect in the transmission cooler line from the factory.
