general problems of the 2025 GMC Sierra 2500

Component / system failure the exhaust system, specifically the exhaust manifolds and previously the egr system components, appear to have failed or malfunctioned, allowing exhaust gases to enter the passenger cabin. The dealer initially replaced the egr cooler diverter on December 23, 2025. However, the condition persisted. On February 3, 2026, cracked exhaust manifolds were identified by the dealership, and a major front-end teardown was advised to complete the repair. The vehicle is currently available for inspection upon request. ? how safety was put at risk the malfunction allowed exhaust gases, including carbon monoxide, to enter the passenger cabin during vehicle operation. Carbon monoxide readings inside the cabin reached up to 50 parts per million (ppm) while driving. Carbon monoxide is a toxic gas that can cause: •headaches •dizziness •impaired concentration •nausea •vision disturbances because carbon monoxide is odorless and colorless, this presents a significant safety risk, particularly at highway speeds where driver alertness is critical. The exposure occurred while operating the vehicle in normal driving conditions. This created a potential risk of driver impairment and increased risk of collision. ? has the problem been reproduced or confirmed? yes. The vehicle was presented to the dealership three times for the same exhaust intrusion concern: •December 16, 2025 •December 29, 2025 •February 3, 2026 during the February 3 visit, the dealership confirmed cracked exhaust manifolds requiring major disassembly for repair. The carbon monoxide readings were observed during vehicle operation. The exhaust odor and intrusion symptoms were consistently present following the first attempted repair. ? has the vehicle been inspected by manufacturer or others? the vehicle has been inspected by the authorized dealership on multiple occasions. Two manufacturer customer care cases were opened.

The contact owns a 2025 GMC Sierra 2500. The contact researched online and became aware that there was a recent recall under NHTSA campaign number: 25v815000 (equipment) for the owner's manual. The contact stated that the vehicle was sold without the owner's manual. The contact stated that the manufacturer was called and was advised that the recall was only related to the 2026 Chevrolet silverado models and the vehicle was not the same year, make or model. The contact was attempting to retain a physical copy of the owner’s manual and thought that it was a safety issue since there was a safety recall. The contact had not experienced a failure.

Had a minor wreck was to be two weeks to then it had to have a new frame they said it coun't be repair if a minor wreck can do this much damage there is a problem with subpar frames that any sudden stops or turns.

The truck is not even 2 weeks old and driving down the road at less than 50mph the sunroof exploded. Nothing fell on the sunroof and no other vehicles were near the truck at the time the sunroof busted.