General Motors issued a technical service bulletin, Customer Satisfaction Program N232427051, addressing transmission issues in certain 2023 and 2024 Corvette models. The bulletin pertains to improperly torqued transmission fasteners, affecting production orders M1L, M1M, T0F, and T0G for various Corvette versions.
Affected vehicles require transmission replacement, regardless of mileage or age, with dealers mandated to perform the replacement at no cost to customers. The comprehensive parts list for this operation includes essential components such as the dual-clutch transaxle, coolant, exhaust manifold pipe seal, and wheel drive shaft nuts.
Labor time for transmission replacement varies depending on the Corvette model, ranging from 14.2 to 17.3 hours, with an additional 1.2 hours for A/C system recharging. General Motors emphasizes the importance of rectifying this issue promptly, with the program running through May 31, 2026, providing ample time for affected Corvette owners to schedule service appointments.
The Tremec TR-9080 transmission, utilized in affected Corvettes, is known for its performance and durability. Despite this issue, the TR-9080 remains a capable transmission, offering quick shifts and robust torque handling capabilities. Looking ahead, General Motors is poised to exceed current power and torque figures with the anticipated ZR1 model, promising even greater performance potential.
