2025 Gmc Sierra Hd Problems. General motors has released a safety recall for certain units of the 2024 gmc sierra hd pickup that were produced with a transmission direct overdrive carrier built with an incorrect caged. Learn about the gmc sierra years to steer clear of, uncovering common issues and problems with specific models to make an informed buying decision.
General motors has found a large enough issue with the 2024 and 2025 silverado / sierra 2500 hd / 3500 hd with the 10 speed allison transmission, that they released a service update for all owners. Gmc sierra 2500/3500 at4 problems and issues.