Customer Satisfaction Program
Chevrolet technical service bulletin N232427140 for 2022-2023 Chevrolet 6500HD.
- Bulletin number
- N232427140
- Component
- Electrical system
- Summary
- Customer Satisfaction Program - Certain vehicles equipped with tire size 255/70R22.5 may have a calibration error where the vehicles were built with an incorrect tire size value. As a results, the speedometer will show a vehicle speed higher than the actual vehicle speed while driving and the odometer will accumulate miles faster (approximately 14% faster) than the “actual” or “True” vehicle miles. Additionally, mileage data collected and stored in the Mimamori Unit (MMU), will be incorrect. Dealer will have the Cummins Engine Control Module (ECM) reprogrammed with the correct tire size value and reprogram the MMU.
Vehicles covered
- Chevrolet 6500HD 2022-2023 20222023
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