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October 26, 2026 Other

Customer Advisory Letter for Torque Converter Parameter Mismatch

Western Star technical service bulletin CAL FTL-WST 26-006.pdf for 2025 Western Star 47X.

Bulletin number
CAL FTL-WST 26-006.pdf (CAL FTL-WST 26-006.pdf)
Component
Power train
Summary
Customer Advisory Letter for Torque Converter Parameter Mismatch - Allison TCM Calibration Update

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