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December 20, 2023 Service bulletin

Customer Satisfaction Program

Chevrolet technical service bulletin N232427130 for 2023 Chevrolet 6500HD.

Bulletin number
N232427130
Component
Unknown or other
Summary
Customer Satisfaction Program. Certain vehicles, equipped with tire size 255/70R22.5 (RPO 5U5), the Mimamori Control Module (MMU) was not programmed with the correct tire size value. This error will cause the accumulated mileage value shown in the captured data to be incorrect. As a result, the Vehicle Health Report will incorrectly calculate mileage-based information such as the “next recommended service” date. Dealers will inspect the vehicle’s tires and reprogram the MMU to correct the mileage accumulation.

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