Chevrolet Workshop Service and Repair Manuals > C 2500 Truck 2WD V6-262 4.3L VIN Z (1992) > Transmission and Drivetrain | Automatic Transmission/Transaxle | Relays and Modules - A/T | Control Module, A/T | Component Information | Description and Operation | Calculated Ratio

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Control Module: Description and Operation
Combined Ratio

The combined ratio is the combination of both overdrive ratio and drive ratio. The PCM/TCM interprets this as total or box ratio.

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