Table 1 shows one common power train related problems of the 2025 Chevrolet Suburban.
| Problem Category | Number of Problems |
|---|---|
| Power Train problems |
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.
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.
7/13/ car repeatedly jerking/shuddering/rough ride. A flashing check engine light came on for 10 or 15 minutes. After stopping car and restarting it, the check engine light went off. 9/15/ car jerking and another flashing check engine light. Took to dealership. They drove it and said no codes stored. Told it was probably the transmission "breaking in. " took home. Car continued to jerk/stumble. 8/28/25 to 9/15/ car jerking and flashing check engine light back on. Took to autozone. A random/multiple cylinder misfire code was detected (p0300). Took to dealership and confirmed p0300 code stored. Gm tac engineers involved. Told they were unable to figure out why car was having multiple misfires. Returned car to me because no active code/light. 9/29/ car jerking and flashing check engine light back on. Got a warning of "reduced acceleration and drive with care. " car lost power. I have video of this and contacted on star with report generated and p0300 code. On 10/1/25 on way to dealer, car making audible ticking noise. I have video of this. Took to dealer, the ecm was replaced and oil changed because it was "very dark" (in vehicle with 4,600 miles). Car continued to jerk/stumble. Told by dealer that problem would have to get worse before diagnosis could be made. 10/31/jerking and another flashing check engine light with "reduced acceleration drive with care warning. " turned car off and engine light off. On star report p0300. Took to dealer. The dealership was given the videos of check engine lights/reduced acceleration warnings and ticking noise video. All show problem happening around 1,200 rpms. Told by dealer on 11/11/25 that gm rep said they will not pay dealer for any work because no active engine light/codes. Told to pick up car. Asked dealer today for reason in writing, but no response. Very concerned about vehicle safety when repeatedly going into limp mode and flashing check engine lights with gm offering no solution.
Engine failed going 70mph on highway at 2k miles. Display said acceleration no longer available and app said transmission code was needing to be checked however once taking to dealer I was told it was an oil sensor then told there was shredded metal in my engine and I needed a full engine replacement. My car was in the dealership for over 50 days. I was pregnant and with two small children in the car when engine failed at high speeds. After my car was returned to me the engine overheated and failed again. The dealer claimed gm sent them an engine with cut hoses. I was 9 months pregnant when this occurred also on the highway going 65mph. Gm refused to buy back the vehicle 3 times.
Purchased the vehicle on April 7, 2025. On 7/15/25, the car had 6948 mi. And started running rough, had a loss of power, an odor from the engine, and then on the display: check engine, blinking green vehicle light, and a message stating that the car was lowering for stability control. Took the vehicle to the closest Chevrolet service. The service dept. Determined that code found p0307 and p0300, cylinder seven had the most misfires above 500. After completing oil service, the vehicle began to click on the passenger side; however, it was not misfiring. They inspected and found potential lifter issue. Found ticking coming from cylinder 7 and verified misfires. Found 2 pushrods damaged. Heard noise coming from cylinder 4, removed valve cover, removed rocker arms, and found 1 pushrod damaged. They removed and replaced all lifters and 3 pushrods. They stated there was no more noise //after this repair. These repairs were completed on July 25, 2025. On 8/15/25 took back to service because it continued to run rough and made excessive noise and whistling when starting the vehicle. The dealer inspected and heard the noise, inspected the vehicle exhaust leak, checked exhaust manifolds, pipe connections, and determined there were no issues found. On 9/26/25 at 11,821 miles the car was making excessive noise, running rough, and was losing power. Drove home, and the vehicle was running rougher and losing power. No check engine lights or warnings were present. Drove home, and the vehicle was running rougher and losing power until it turned off. Towed in. Maintenance techs determined catastrophic engine failure, all bearings and engine rods seized. After this repair hen the catalytic converter failed. This car has been out of service due to engine failures for 43 days out of the 204 of ownership.